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Study on Gas Drainage Mechanisms and Techniques in Low-Permeability Coal Seam


Authors : Tijjani Kasim Bashir; Zhang Chushan

Volume/Issue : Volume 11 - 2026, Issue 10 - October

Google Scholar : https://tinyurl.com/mwdt7t8s

DOI : https://doi.org/10.38124/ijisrt/26Oct1525

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ResearchGate

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Abstract : This study investigates gas drainage mechanisms and techniques for low-permeability coal seams. It examines coal structure, gas-flow behaviour, permeability controls, and internationally applied drainage methods. Permeabilityenhancement approaches, including hydraulic fracturing, hydraulic slotting, and controlled blasting, are evaluated alongside borehole design and operating factors. Sensitivity analysis assesses the effects of coal-seam permeability, gas pressure, and drainage configuration on performance. The study integrates theoretical mechanisms with engineering practices to support safer mining, improved methane recovery, and reduced greenhouse-gas emissions.

Keywords : Coal permeability; Coalbed methane; Gas Drainage; Hydraulic Fracturing; Low-Permeability Coal Seam.

References :

  1. An, F.H., Cheng, Y. P., Wang, L. and Li, W. (2013), “A numerical model for outburst including the effect of adsorbed gas on coal deformation and mechanical properties”, Computers and Geotechnics, 54, pp.222-231.
  2. Aul, G. and Ray, R. (1991), “Optimizing methane drainage systems to reduce mine ventilation requirements”, 5th US Mine Ventilation Symposium, 3–5.
  3. Bahrami, H., Rezaee, R. and Clennell, B. (2012), “Water blocking damage in hydraulically fractured tight sand gas reservoirs: An example from Perth Basin, Western Australia”, Journal of Petroleum Science and Engineering, 88, pp.100-106.
  4. Bai, T. H., Chen, Z. W., Aminossadati, S. M., Li, N., Liu, J. S. and Lu, H. (2017), “Dimensional analysis and prediction of coal fines generation under two-phase flow conditions”, Fuel; 194:460–79.
  5. Balusu, R., Tuffs, N., White, D. and Harvey, T. (2006), “Surface goaf gas drainage strategies for highly gassy longwall mines”, Journal of the Mine Ventilation, Society of South Africa, 59(3):77-84.
  6. Beaton, A., Langenberg, W. and Pană, C. (2006), “Coalbed methane resources and reservoir characteristics from the Alberta Plains, Canada”, International journal of coal geology, 65(1-2), pp.93-113.
  7. Black, D. J. and Aziz, N. (2008), “Improving UIS gas drainage in underground coal mines”, 16th Coal Congress of Turkey (pp. 1-10), https://ro.uow.edu.au/eispapers/3013/.
  8. Bohan, M. P. (2009), “Directional drilling techniques provide options for coal mine methane (CMM) drainage”, (th International Mine Ventilation Congres. 10-13 Nov. New Delhi, India.
  9. Campoli, A. A., Cervik, J. and Schatzel, S. J. (1983), “Control of Longwall Gob Gas With Cross-Measure Boreholes (Upper Kittanning Coalbed)”, Vol. 8841, US Department of the Interior, Bureau of Mines.
  10. Cao, D., Wang, A., Ning, S., Huantong, L., Aijun, G., Limin, C., Kang, L., Jieqing, T. and Zhihong, Z. (2020). “Coalfield structure and structural controls on coal in China”. International Journal of Coal Science and Technology, volume 7, pages 220–239. https://doi.org/10.1007/s40789-020-00326-z.
  11. CEIC (2021), “Russia Coal Production”, Retrieved from: https://www.ceicdata.com/en/indicator/russia/coal-production.
  12. Chao, Z., Bai-quan, L. I. N., Yan, Z. H. O. U., Cheng, Z. H. A. I., Hai-jin, W. U. and Zhi-yong, H. A. O. (2013), “Strong-weak-strong borehole pressurized sealing technology for horizontal gas drainage borehole in mining seam”, Journal of Mining and Safety Engineering, 30(6), p.935.
  13. Charon, E., Rouzaud, J. N. and Aléon, J. (2014), “Graphitization at low temperatures (600-1200°C) in the presence of iron implications in planetology”, Carbon 2014, 66, 178–190. 10.1016/j.carbon.2013.08.056.
  14. Chen, D., Pan, Z., Liu, J. and Connell, L. D. (2012a), “Characteristic of anisotropic coal permeability and its impact on optimal design of multi-lateral well for coalbed methane production”, Journal of Petroleum Science and Engineering, 88, pp.13-28.
  15. Chen, H. D., Yuan-Ping, C., Zhou, H. X. and Li, W. (2013), “Damage and permeability development in coal during unloading”, Rock Mechanics and Rock Engineering, 46, pp.1377-1390.
  16. Chen, H., Qun, F., Ruyin, L. and Hui, Q. (2012), “Focusing on coal miners’ occupational disease issues: A comparative analysis between China and the United States”, Safety Science, Volume 51, Issue 1, 2013, Pages 217-222, ISSN 0925-7535, https://doi.org/10.1016/j.ssci.2012.06.025.
  17. Chen, J. and Jin, L. (2003), “Research on improving gas drainage's effect with polyurethane sealing”, Coal Engineering, 36(8), pp.47-49.
  18. Chen, J., Wang, T., Zhou, Y., Zhu, Y. and Wang, X. (2012b), “Failure modes of the surface venthole casing during longwall coal extraction: A case study”, International Journal of Coal Geology, Volumes 90–91, Pages 135-148, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2011.11.007.
  19. Cheng, X., Zhang, Q., Zhang, Z., Zou, Y. and Junjie, G. (2021), “Stress relief and stimulation of coal reservoir by hydraulic slotting”, Advances in Civil Engineering, 2021, pp.1-13.
  20. Cheng, Y. P. and Yu, Q. X. (2003), “Application of safe and high-efficient exploitation system of coal and gas in coal seams”, Zhongguo Kuangye Daxue Xuebao, 32.
  21. Cheng, Y. P. and Yu, Q. X. (2007), “Development of regional gas control technology for Chinese coalmines”, Journal of Mining & Safety Engineering, 24(4), pp.383-390.
  22. Cheng, Y., Yu, Q. and Yuang, L. (2004), “Experimental research of safe and high-efficient exploitation of coal and pressure relief gas in long distance”, Journal of China University of Mining and Technology, 33.
  23. Clarkson, C. R. and Bustin, R. M. (1997), “Variation in permeability with lithotype and maceral composition of Cretaceous coals of the Canadian Cordillera”, International Journal of Coal Geology, Volume 33, Issue 2, 1997, Pages 135-151, ISSN 0166-5162, https://doi.org/10.1016/S0166-5162(96)00023-7.
  24. Cui, X., Bustin, R. M. and Chikatamarla, L. (2007), “Adsorption-induced coal swelling and stress: Implications for methane production and acid gas sequestration into coal seams”, J Geophys Res-Sol Ea; 112:B10202.
  25. Danesh, N. N., Chen, Z. W., Aminossadati, S. M., Kizil, M. S., Pan, Z. J. and Connell, L. D. (2016), “Impact of creep on the evolution of coal permeability and gas drainage performance”, J Nat Gas Sci Eng;33:469–82.
  26. Datta, D. R. (2016), “Coal, Permeability”, Encyclopedia of Mineral and Energy Policy, Springer, Berlin, Heidelberg, https://doi.org/10.1007/978-3-642-40871-7_101-1.
  27. Day, R. W. (2009), “Coal seam gas booms in eastern Australia”, Aust. Resour. Invest, 3, pp.42-47.
  28. Dejam, M. (2019), “Advective-diffusive-reactive solute transport due to non-Newtonian fluid flows in a fracture surrounded by a tight porous medium”, International Journal of Heat and Mass Transfer, 128, pp.1307-1321.
  29. Dejam, M., Hassanzadeh, H. and Chen, Z. (2018), “Semi-analytical solution for pressure transient analysis of a hydraulically fractured vertical well in a bounded dual-porosity reservoir”, Journal of Hydrology, 565, pp.289-301.
  30. Department of Energy – Republic of South Africa (2016), “South African Coal Sector Report”, Directorate: Energy Data Collection, Management and Analysis, Retrieved: https://www.energy.gov.za/files/media/explained/South-African-Coal-Sector-Report.pdf
  31. Diamond, W. P. (1993), “Methane Control for Underground Coal Mines”, Chapter 11: 237-267.
  32. Dong, J., Cheng, Y. P., Chang, T. Y., Zhang, J. J. and Guo, S. F. (2015), “Coal mine methane control cost and full cost: The case of the Luling Coal Mine, Huaibei coalfield, China”, Journal of Natural Gas Science and Engineering, 26, pp.290-302.
  33. Dongdong, Q., Xufeng, W., Dongsheng, Z., Weiming, G., Lei, Z. and Mengtang, X. (2019). “Occurrence Characteristic and Mining Technology of Ultra-Thick Coal Seam in Xinjiang, China”, Sustainability 2019, 11(22), 6470; https://doi.org/10.3390/su11226470.
  34. Durucan, S., Ahsanb, M. and Shi, J. Q. (2009), “Matrix shrinkage and swelling characteristics of European coals”, Energy Procedia;1:3055–62.
  35. Eade, P. (2002), “Case study outburst & gas management”, Coal Operators’ Conference, pp. 105-113.
  36. Fan, J., Liu, P., Li, J., and Jiang, D. (2020b), “A coupled methane/air flow model for coal gas drainage: Model development and finite-difference solution”, Process Safety and Environmental Protection, 141, 288-304.
  37. Fan, J., Liu, W., Jiang, D., Chen, J., Tiedeu, W. N., and Daemen, J. J. (2020a), “Time interval effect in triaxial discontinuous cyclic compression tests and simulations for the residual stress in rock salt”, Rock Mechanics and Rock Engineering, 53, 4061-4076.
  38. Feilin, H., Chunshan, Z. and Sheng, X. (2022), “Study on mechanism of multi-factor interaction effect on effective drainage radius based on response surface methodology”, Journal of Safety Science and Technology, 18(10): 62-9.
  39. Field, T. W. (2004), “Surface to In-seam Drilling – The Australian Experience”, In International Coalbed Methane Symposium, Tuscaloosa, Alabama.
  40. Flores, M. R. (2014), “Coal and Coalbed Gas, Fueling the Future”, Elsevier Science, Waltham.
  41. Folkes, J. (2009), “Waterjet—An innovative tool for manufacturing”, Journal of Materials Processing Technology, 209(20), pp.6181-6189.
  42. Franks Daniel, M., David, B. and Chris, J. M. (2010), “Managing the cumulative impacts of coal mining on regional communities and environments in Australia”, Impact Assessment and Project Appraisal, 28:4, 299-312, https://doi.org/10.3152/146155110X12838715793129.
  43. Fu, X., Qin, Y., Wang, G. G. and Rudolph, V. (2009), “Evaluation of coal structure and permeability with the aid of geophysical logging technology”, Fuel, 88(11), pp.2278-2285.
  44. Gao, Z., Ma, D. M., Chen Y., Zheng, C. and Teng, J. X. (2020), “Study for the effect of temperature on methane desorption based on thermodynamics and kinetics”, ACS Omega, https://doi.org/10.1021/acsomega.0c05236.
  45. Ge, Z., Mei, X., Lu, Y., Tang, J. and Xia, B. (2015), “Optimization and application of sealing material and sealing length for hydraulic fracturing borehole in underground coal mines”, Arabian Journal of Geosciences, 8, pp.3477-3490.
  46. Gensterblum, Y., Merkel, A., Busch, A. and Krooss, B. M. (2013), “High-pressure CH4 and CO2 sorption isotherms as a function of coal maturity and the influence of moisture”, International Journal of Coal Geology, 118, pp.45-57.
  47. Gentzis, T. (2000), “Subsurface sequestration of carbon dioxide - an overview from an Alberta (Canada) perspective”, International Journal of Coal Geology, 43 (2000) 287–305.
  48. Geoscience Australia, n.d., “Earth sciences for Australia’s future”, Access: https://www.ga.gov.au/scientific-topics/energy/resources/coal-resources#:~:text=In%20Australia%20coal%20deposits%20occur,of%20the%20nation's%20electricity%20requirements.
  49. Guanhua, N., Hongchao, X., Zhao, L., Lingxun, Z. and Yunyun, N. (2018), “Improving the permeability of coal seam with pulsating hydraulic fracturing technique: A case study in Changping coal mine, China”, Process Safety and Environmental Protection, Volume117, 2018, Pages 565-572, ISSN 0957-5820, https://doi.org/10.1016/j.psep.2018.06.001.
  50. Guo, D. Y., Li, C. J. and Zhang, Y. Y. (2014), “Contrast study on porosity and permeability of tectonically deformed coal and indigenous coal in Pingdingshan mining area, China”, Earth Sci J, China Univ Geosci 39:1600–1606
  51. Guo, M., Guo, W., Zhao, G., Yuan, R., Wang, Y. and Bai, E. (2023), “Position characteristics of horizontal-directional long boreholes in overlying strata and drainage mechanism of pressure-relief gas in longwall mining”, Journal of China Coal Society, 48(10), pp. 3750-3765.
  52. Han, B., Xie, S. Y. and Shao, J. F. (2016), “Experimental investigation on mechanical behavior and permeability evolution of a porous limestone under compression”, Rock Mechanics and Rock Engineering, 49, pp.3425-3435.
  53. Hancox, P. J and Götz, A. E. (2014), “South Africa's coalfields — A 2014 perspective”, International Journal of Coal Geology, Volume 132, 2014, Pages 170-254, ISSN 01665162, https://doi.org/10.1016/j.coal.2014.06.019.
  54. Hao, Z. (2010), “Research of composite technology and application in borehole sealing”, China University of Mining and Technology, Xuzhou.
  55. Harpalani, S. and Schraufnagel, R. A. (1990), “Shrinkage of coal matrix with release of gas and its impact on permeability of coal”, Fuel, 69(5), pp.551-556, https://doi.org/10.1016/0016-2361(90)90137-F.
  56. He, J. and Dong, K. (2014), “Research on rational sealing depth of gas drainage borehole in large section roadway”, China Coal, 40(2), pp.101-104.
  57. Homer W. A. (2009), “Coal Mine Safety Regulation in China and the USA”, Journal of Contemporary Asia, 39:3, 424-439, https://doi.org/10.1080/00472330902944511.
  58. Hu, Q., Jiang, S. and Su, W. (2000), “Countermeasures for preventing and controlling gas disasters in China’s coal mines”, Journal of Mining & Safety Engineering, 27, pp.1-4.
  59. Huang, B. X., Chen, S. L. and Cheng, Q. Y. (2016), “Basic problems of hydraulic fracturing for mining and control zone gas in coal seams”, Journal of China Coal Society, 41(1), pp.128-137.
  60. Huang, B. X., Huang, C. M., Cheng, Q. Y., Huang, C. H. and Xue, W. C. (2012), “Hydraulic fracturing technology for improving permeability in gas-bearing coal seams in underground coal mines”, Journal of the Southern African Institute of Mining and Metallurgy, 112(6), pp.485-495.
  61. Hungerford, F. and Ren, T. (2013), “Wollongong Cross-Measure Directional Drilling, Coal Operators’ Conference 2013”, Cross-Measure Directional Drilling, Coal Operators’ Conference.
  62. Hungerford, F., Ren, T. and Aziz, N. (2013), “Evolution and application of in-seam drilling for gas drainage”, Int. J. Min. Sci. Technol, 23, 543–553.
  63. International Energy Agency (IEA) (2008), “World Energy Outlook 2008”, Access: https://www.iea.org/reports/world-energy-outlook-2008.
  64. Jeffrey, L. S. (2005), “Characterization of the coal resources of South Africa”, Journal of the Southern African Institute of Mining and Metallurgy, Volume 105, Issue 2: Volume 105, Issue 2, ISSN 0038-223X, https://doi.org/10.10520/AJA0038223X_3050.
  65. Jiang, C. (1988), “Study on the method of measuring permeability coefficient of coal seam”, J. China Inst. Min. Technol, 2, 77-83.
  66. Jin, K., Cheng, Y., Wang, W., Liu, H., Liu, Z. and Zhang, H. (2016), “Evaluation of the remote lower protective seam mining for coal mine gas control: a typical case study from the Zhuxianzhuang Coal Mine, Huaibei Coalfield, China”, Journal of Natural Gas Science and Engineering, 33, pp.44-55.
  67. Ju, W., Jiang, B., Qin, Y., Wu, C., Wang, G., Qu, Z. and Li, M. (2019), “The present-day in-situ stress field within coalbed methane reservoirs, Yuwang Block, Laochang Basin, south China”, Marine and Petroleum Geology, 102, pp.61-73.
  68. Kamenar, A., Taco, G., and Edgoose, J. (2017), “How to plan a safe and successful permeability test program in coal seams”, Google scholar, https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2334&context=coal.
  69. Kang, G. X., Kang, T. H., Guo, J. Q., Kang, J. T., Zhang, R. X., Zhang, X. Y., Zhao, G. F., Zhang, B., Li, L. G. and Zhang, L. K. (2020), “Effect of electric potential gradient on methane adsorption and desorption behaviours in lean coal by electrochemical modification: implications for coalbed methane development of Dongqu mining – China”, ACS Omega 5(37):24073–24080, https://doi.org/10.1021/acsomega.0c03496.
  70. Kang, J., Zhou, F., Qiang, Z. and Zhu, S. (2018), “Evaluation of gas drainage and coal permeability improvement with liquid CO2 gasification blasting”, Advances in Mechanical Engineering, 10(4), p.1687814018768578.
  71. Karacan, C. Ö. (2008), “Modeling and prediction of ventilation methane emissions of US longwall mines using supervised artificial neural networks”, International Journal of Coal Geology, 73(3-4), pp.371-387.
  72. Karacan, C. Ö. and Goodman, G. V. (2011), “Monte Carlo simulation and well testing applied in evaluating reservoir properties in a deforming longwall overburden”, Transport in porous media, 86(2), pp.415-434.
  73. Karacan, C. Ö., Diamond, W. P. and Schatzel, S. J. (2007), “Numerical analysis of the influence of in-seam horizontal methane drainage boreholes on longwall face emission rates”, International Journal of Coal Geology, 72(1), pp.15-32.
  74. Karacan, C. Ö., Diamond, W. P., Schatzel, S. J. and Garcia, F. (2006), “Development and application of reservoir models for the evaluation and optimization of longwall methane control systems”, In Proceedings of 11th US mine ventilation symposium, University Park, PA (pp. 425-432).
  75. Karacan, C. Ö., Ruiz, F. A., Cotè, M. and Phipps, S. (2011), “Coal mine methane: A review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction”, International Journal of Coal Geology, Volume 86, Issues 2–3, Pages 121-156, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2011.02.009.
  76. Kim, A. G. (1977), “Estimating methane content of bituminous coalbeds from adsorption data”, (Vol. 8245), Department of the Interior, Bureau of Mines.
  77. Kissell, F. N., McCulloch, C. M. and Elder, C. H. (1973), “The direct method of determining methane content of coalbeds for ventilation design”, (Vol. 7767), US Department of Interior, Bureau of Mines.
  78. Kong, S., Cheng, Y., Ren, T. and Liu, H. (2014), “A sequential approach to control gas for the extraction of multi-gassy coal seams from traditional gas well drainage to mining-induced stress relief”, Applied Energy, 131, pp.67-78.
  79. Kuznetsova, B. S. and Gorbacheva, N. V. (2015), “Pain without gain? Reviewing the risks and rewards of investing in Russian coal-fired electricity”, Applied Energy, No. 154, Vol. 970-986.
  80. Lan, Y. W., Gao, H. M. and Chen, X. H. (2013), “Numerical simulation study on influence factors of borehole pressure relief effect”, Mining Safety & Environment Protection, 40(3), pp.6-9.
  81. Lee, T., Park, D., Shin, C., Jeong, D. and Choe, J. (2016), “Efficient production estimation for a hydraulic fractured well considering fracture closure and proppant placement effects”, Energy Exploration & Exploitation, 34(4), pp.643-658.
  82. Levine, J. R. (1993), “Coalification: The evolution of coal as source rock and reservoir rock for oil and gas, Law, B., Rice, D. (Eds.)”, Hydrocarbons from Coal (1993) 39–77.
  83. Li, D. (2014), “Underground hydraulic mining of thin sub-layer as protective coal seam in coal mines”, International Journal of Rock Mechanics and Mining Sciences, 67, pp.145-154.
  84. Li, G. F., Li, G. G. and Liu, G. (2014), “Analysis on the ground extraction effect of coal-bed methane at typical area in Jincheng China”, Journal of China Coal Society, 39(9), pp.1932-1937.
  85. Li, P. P., Zhang, X. D., Li J, Zhao, J. P., Huang, J. P., Zhang, S. and Zhou, S. X. (2020a), “Analysis of the key factors affecting the productivity of coalbed methane wells: a case study of a high-rank coal reservoir in the central and southern Qinshui basin China”, ACS Omega 5(43):28012–28026, https://doi.org/10.1021/acsomega.0c03540.
  86. Li, Q., Lin, B. and Zhai, C. (2015), “A new technique for preventing and controlling coal and gas outburst hazard with pulse hydraulic fracturing: a case study in Yuwu coal mine, China”, Natural Hazards, 75, pp.2931-2946.
  87. Li, R. and Guy, C. K. L. (2012), “Coal consumption and economic growth in China”, Energy Policy, Volume 40, 2012, Pages 438-443, ISSN 0301-4215, https://doi.org/10.1016/j.enpol.2011.10.034.
  88. Li, R., Wang, S., Li, G. and Wang, J. (2022), “Influences of coal seam heterogeneity on hydraulic fracture geometry: an in situ observation perspective”, Rock Mechanics and Rock Engineering, 55(7), pp.4517-4527.
  89. Li, X. C., Chen, X. L., Zhang, F., Zhang, M. T., Zhang, Q. and Jia, S. Y. (2020b), “Energy calculation and simulation of methane adsorbed by coal with different metamorphic grades”, ACS Omega 5(25):14976–14989, https://doi.org/10.1021/acsomega.0c00462.
  90. Li, X. H., Lu, Y. Y., Zhao, Y., Kang, Y. and Zhou, D. P. (2008), “Study on improving the permeability of soft coal seam with high pressure pulsed water jet”, Mei T'an Hsueh Pao (Journal of China Coal Society), 33.
  91. Liang Yuan (2016), “Control of coal and gas outbursts in Huainan mines in China: A review”, Journal of Rock Mechanics and Geotechnical Engineering, Volume 8, Issue 4, 2016, Pages 559-567, ISSN 1674-7755, https://doi.org/10.1016/j.jrmge.2016.01.005.
  92. Lin, B. and Zhang, R. (1996), “Analysis of fluid sealing mechanics of drilling and its impact factors”, J. China Univ. Min. Technol., 1, pp.25-30.
  93. Lin, B. Q., Yang, W., Wu, H. J., Meng, F. W., Zhao, Y. X. and Zhai, C. (2010), “A numeric analysis of the effects different factors have on slotted drilling”, J China Univ Min Technol, 39(2), pp.153-157.
  94. Lin, B., Liu, T. and Yang, W. (2018), “Solid-gas coupling model for coal seams based on dynamic diffusion and its application”, J. China Univ. Min. Technol, 47, 32–39.
  95. Lin, B., Yan, F., Zhu, C., Zhou, Y., Zou, Q., Guo, C. and Liu, T. (2015), “Cross-borehole hydraulic slotting technique for preventing and controlling coal and gas outbursts during coal roadway excavation”, Journal of Natural Gas Science and Engineering, Volume 26, Pages 518-525, ISSN 1875-5100, https://doi.org/10.1016/j.jngse.2015.06.035.
  96. Lin, B., Yan, F., Zhu, C., Zhou, Y., Zou, Q., Guo, C. and Liu, T. (2015), “Cross-borehole hydraulic slotting technique for preventing and controlling coal and gas outbursts during coal roadway excavation”, Journal of Natural Gas Science and Engineering, 26, pp.518-525.
  97. Liu, H. Y., Cheng, Y. P., Zhao, C. C., Zhou, H. X. and Zhang, Z. P. (2010), “Classification and judgment method of the protective layers”, J Min Saf Eng, 27(4), pp.468-474.
  98. Liu, L. L., Cui, Z. H., Wang, J. J., Xia, Z. H., Duan, L. J., Yang, Y., Li, M. and Li, T. (2020), “Pore size distribution characteristics of high rank coal with various grain sizes”, ACS Omega 5(31):19785–19795, https://doi.org/10.1021/acsomega.0c02569.
  99. Liu, P., Fan, J., Jiang, D., and Li, J. (2021a), “Evaluation of underground coal gas drainage performance: mine site measurements and parametric sensitivity analysis”, Process Safety and Environmental Protection, 148, 711-723.
  100. Liu, P., Fan, L., Fan, J., and Zhong, F. (2021b), “Effect of water content on the induced alteration of pore morphology and gas sorption/diffusion kinetics in coal with ultrasound treatment”, Fuel, 306, 121752.
  101. Liu, P., Liu, A., Liu, S., and Qi, L. (2022), “Experimental evaluation of ultrasound treatment induced pore structure and gas desorption behavior alterations of coal”, Fuel, 307, 121855.
  102. Liu, Q., Cheng, Y., Haifeng, W., Hongxing, Z., Liang, W., Wei, L. and Hongyong, L. (2015), “Numerical assessment of the effect of equilibration time on coal permeability evolution characteristics”, Fuel, 140, pp.81-89.
  103. Liu, Q., Cheng, Y., Yuan, L., Fang, Y., Shi, D. and Kong, S. (2014), “A new effective method and new materials for high sealing performance of cross-measure CMM drainage boreholes”, Journal of Natural Gas Science and Engineering, 21, pp.805-813.
  104. Liu, S. G., Tang, S. L. and Yin, S. D. (2018), “Coalbed methane recovery from multilateral horizontal wells in Southern Qinshui Basin”, Adv Geo-Energy;2(1):34–42.
  105. Liu, Y., Zhou, F., Geng, X., Chang, L., Kang, J., Cui, G. and Zhang, S. (2017), “A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes”, Journal of Natural Gas Science and Engineering, 37, pp.178-191.
  106. Liu, Z., Cheng, Y., Liu, Q., Jiang, J., Li, W. and Zhang, K. (2017), “Numerical assessment of CMM drainage in the remote unloaded coal body: Insights of geostress-relief gas migration and coal permeability”, Journal of Natural Gas Science and Engineering, 45, pp.487-501.
  107. Lu, G. W., Wei C. T., Wang J. L., Zhang J. J., Quan F. K. and Tamehe L. S. (2019), “Variation of surface free energy in the process of methane adsorption in the nanopores of tectonically deformed coals: a case study of middle-rank tectonically deformed coals in the Huaibei Coalfield”, Energy Fuels 33(8):7155 7165, https://doi.org/10.1021/acs.energyfuels.9b01265.
  108. Lu, G. W., Wei, C. T., Wang, J. L., Yan, G. Y., Zhang, J. J. and Song, Y. (2018b), “Methane adsorption characteristics and adsorption model applicability of tectonically deformed coals in the Huaibei coalfield”, Energy Fuels 32(7):7485 7496, https://doi.org/10.1021/acs.energyfuels.8b01397.
  109. Lu, J., Fu, X., Kang, J., Cheng, M. and Wang, Z. (2021), “Characterization of full pore and stress compression response of reservoirs with different coal ranks”, Frontiers in Earth Science, 9, 764853.
  110. Lu, M. and Connell, L. D. (2007), “A dual-porosity model for gas reservoir flow incorporating adsorption behaviour—part I. Theoretical development and asymptotic analyses”, Transport in Porous Media, 68(2), pp.153-173.
  111. Lu, W., Huang, B. and Zhao, X. (2019), “A review of recent research and development of the effect of hydraulic fracturing on gas adsorption and desorption in coal seams”, Adsorption Science & Technology, 37(5-6), pp.509-529.
  112. Lu, Y., Shi, S., Wang, H., Tian, Z., Ye, Q. and Niu, H. (2019), “Thermal characteristics of cement microparticle-stabilized aqueous foam for sealing high-temperature mining fractures”, International Journal of Heat and Mass Transfer, 131, pp.594-603.
  113. Lunarzewski, L. W. (1998), “Gas emission prediction and recovery in underground coal mines”, International Journal of Coal Geology, Volume 35, Issues 1–4, Pages 117-145, ISSN 0166-5162, https://doi.org/10.1016/S0166-5162(97)00007-4.
  114. Lunarzewski, L. W. (2019), “Gas Drainage Practices, in Naj Aziz and Bob Kininmonth (eds.)”, Proceedings of the 2001 Coal Operators' Conference, Mining Engineering, University of Wollongong, 18-20 February 2019, https://ro.uow.edu.au/coal/215.
  115. Ma, H., Wang, J., Qian, J. and Luo, Q. (2023), “Mesoscopic deformation of a hydraulic and mechanical aperture of a single fracture under normal stress”, Lithosphere, 2023(1), p.1118957.
  116. Macdonald, D. (2006), “Australian CSG horizontal drilling—some technical aspects”, CBM—Unlocking a Global Resource, SPE-ATW, Beijing, China.
  117. Mian, C. and Zhida C. (1999), “Effective Stress Law of Multiple Porous Media”, Applied Mathematics and Mechanics, (11): 1121-7.
  118. Ministry of Energy of the Russian Federation (2010), “Energy Strategy of Russia for the period up to 2030”, Institute of Energy Strategy.
  119. Morse D. G., Mastalerz M., Drobniak A., Rupp J. A. and Harpalani S. (2010), “Variations in coal characteristics and their possible implications for CO2 sequestration: Tanquary injection site, southeastern Illinois, USA”, International Journal of Coal Geology, Volume 84, Issue 1, 2010, Pages 25-38, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2010.08.001.
  120. Mucho, T. P., Diamond, W. P., Garcia, F., Byars, J. D. and Cario, S. L. (2000), “Implications of recent NIOSH tracer gas studies on bleeder and gob gas ventilation design”, Society of Mining Engineers Annual Meeting, https://stacks.cdc.gov/view/cdc/9025.
  121. National Coal Mine Safety Administration (2019), “Measuring Method for Gas Permeability Coefficient of Coal Seam—Radial Flow Method”, MT/T 1173–2019; National Coal Mine Safety Administration: Arlington, VA, USA.
  122. National Geographic (2022), “Coal – resource library articles”, Retrieved; https://education.nationalgeographic.org/resource/coal.
  123. Ningping, Y., Jie, Z., Xing, J. and Hanjing, H. (2014), “Status and development of directional drilling technology in coal mine”, Procedia Engineering, 73, pp.289-298.
  124. Noack, K. (1998), “Control of gas emissions in underground coal mines”, International Journal of Coal Geology, 35(1-4), pp.57-82.
  125. Palmer, I. (2010), “Coalbed methane completions: a world view”, International Journal of Coal Geology, 82(3-4), pp.184-195.
  126. Permana A. K., Ward C. R., Zhongsheng L. and Gurba L. W. (2013), “Distribution and origin of minerals in high-rank coals of the South Walker Creek area, Bowen Basin, Australia”, International Journal of Coal Geology, Volumes 116–117, 2013, Pages 185-207, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2013.03.001.
  127. Qingquan, L., Yuanping, C. and Wei, L. (2015), “Mathematical model of coupled gas flow and coal defoemation process in low-permeability and first mined coal seam”, Chinese Journal of Rock Mechanics and Engineering, 34(S1): 2749-58.
  128. Quan, F. K., Wei, C. T., Feng, S. L. and Hu, Y. B. (2020), “Physical experiment and numerical simulation of the depressurization rate for coalbed methane production”. ACS Omega 5(35):22661–22673, https://doi.org/10.1021/acsomega.0c03439.
  129. Ren, H., Zhang, D., Gong, S., Zhou, K., Xi, C., He, M. and Li, T. (2021), “Dynamic impact experiment and response characteristics analysis for 1: 2 reduced-scale model of hydraulic support”, International Journal of Mining Science and Technology, 31(3), pp.347-356.
  130. Ritter, D., Vinson, D., Barnhart, E., Akob, D. M., Fields, M. W., Cunningham, A. B., Orem, W. and McIntosh, J. C. (2015), “Enhanced microbial coalbed methane generation: A review of research, commercial activity, and remaining challenges”, International Journal of Coal Geology, Volume 146, Pages 28-41, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2015.04.013.
  131. Russian Federal State Statistics Service (2016), Statistical Yearbooks, Available at: http://www.gks.ru/wps/wcm/connect/rosstat_main/rosstat/ru/statistics/publications/catalog/doc_1135087342078 (accessed: 2016, August, 1).
  132. Salmachi, A. and Karacan, C. O. (2017), “Cross-formational flow of water into coalbed methane reservoirs: controls on relative permeability curve shape and production profile”, Environ. Earth Sci., 76.
  133. Salmachi, A., Dunlop, E. and Rajabi, M. (2018), “Drilling data of deep coal seams of the Cooper Basin: analysis and lessons learned”, The APPEA Journal, 58(1), pp.381-394.
  134. Sang, S., Xu, H., Fang, L., Li, G. and Huang, H. (2010), “Stress relief coalbed methane drainage by surface vertical wells in China”, International Journal of Coal Geology, 82(3-4), pp.196-203.
  135. Seidle, J. P., Jeansonne, M. W. and Erickson, D. J. (1992), “Application of Matchstick Geometry to Stress Dependent Permeability in Coals”, Paper presented at the SPE Rocky Mountain Regional Meeting, Casper, Wyoming, https://doi.org/10.2118/24361-MS.
  136. Shang, X., Wang, J. G., Zhang, Z. and Gao, F. (2019), “A three-parameter permeability model for the cracking process of fractured rocks under temperature change and external loading”, Int J Rock Mech Min;123:104106.
  137. Shang, Y., Wu, G., Kong, D., Wang, Y. and Li, F. (2022), “Research on influencing factors of effective gas extraction radius in coal mine based on multiple linear regression”, Advances in Materials Science and Engineering, (1), p.3013647.
  138. Shealy, M. and Dorian, J. P. (2010), “Growing Chinese coal use: Dramatic resource and environmental implications”, Energy Policy, Volume 38, Issue 5, 2010, Pages 2116-2122, ISSN 0301-4215, https://doi.org/10.1016/j.enpol.2009.06.051.
  139. Shen, C., Lin, B., Zhang, Q., Yang, W. and Zhang, L. (2012), “Induced drill-spray during hydraulic slotting of a coal seam and its influence on gas extraction”, International Journal of Mining Science and Technology, 22(6), pp.785-791.
  140. Shengyong, H., Fubao, Z., Ce, Z., Feng, G. and Aibin, X. (2012), “Distribution characteristics of fracture field around gas drainage borehole in underground coal mine”, Disaster Advances, 5(4), pp.1050-1054.
  141. Shi-hao, T., Yuan, Y., Zhen, Y., Xiao-tao, M. and Wu Q. (2009), “Research situation and prospect of fully mechanized mining technology in thick coal seams in China”, The 6th International Conference on Mining Science & Technology, Access: https://doi.org/10.1016/j.proeps.2009.09.008.
  142. Shi, R., Liu, J., Wei, M., Elsworth, D. and Wang, X. (2018a), “Mechanistic analysis of coal permeability evolution data under stress-controlled conditions”, Int J Rock Mech Min Sci 110:36–47, https://doi.org/10.1016/j.ijrmms.2018.07.003.
  143. Shi, X., Pan, J., Hou, Q., Jin, Y., Wang, Z., Niu, Q. and Li, M. (2018b), “Micrometer-scale fractures in coal related to coal rank based on micro-CT scanning and fractal theory”, Fuel 212:162–172, https://doi.org/10.1016/j.fuel.2017.09.115.
  144. Shifeng, D. and Finkelman, R. B. (2018), “Coal geology in China: an overview”, International Geology Review, 60:5-6, 531-534, DOI: 10.1080/00206814.2017.1405287.
  145. Shihua R., Dezhi Z., Yang Q., Rongjun Q., Xiaomiao J. and Jinyan B. (2021), “Development Assessment of the Coal Industry of China Based on the Minimum Deviation Comprehensive Weight Evaluation Model”, Advances in Civil Engineering, vol. 2021, Article ID 5248324, 11 pages, 2021, https://doi.org/10.1155/2021/5248324.
  146. Shihua, S. (2020), “Coal-mining technology in China”, Energy, Volume 11, Issues 11–12, Pages 1141-1145, ISSN 0360-5442, https://doi.org/10.1016/0360-5442(86)90050-2.
  147. Singh, M. M. and Kendorski, F. S. (1983), “Strata disturbance prediction for mining beneath surface water and waste impoundments: Proc 1st conference on ground control in mining, Morgantown”, 27–29 July 1981, P76–89, Publ Morgantown: West Virginia University, 1981, In International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (Vol. 20, No. 1, p. A13), Pergamon.
  148. Smyth, M. and Buckley, M. J. (1993), “Statistical analysis of the microlithotype sequences in the Bulli Seam, Australia, and relevance to permeability for coal gas”, International Journal of Coal Geology, Volume 22, Issues 3–4, 1993, Pages 167-187, ISSN 0166-162, https://doi.org/10.1016/0166-5162(93)90025-6.
  149. Song, Y., Jiang, B. and Liu, J. G. (2017), “Nanopore structural characteristics and their impact on methane adsorption and diffusion in low to medium tectonically deformed coals: case study in the Huaibei coal field”, Energy Fuels 31(7):6711 6723, https://doi.org/10.1021/acs.energyfuels.7b00512.
  150. Su, S. and Agnew, J. (2006), “Catalytic combustion of coal mine ventilation air methane”, Fuel, 85(9), pp.1201-1210.
  151. Sun, C., Zhai, C., Lin, B., Li, X. and Ni, G. (2012), “Numerical simulation on characteristics of borehole stress distribution and technique of pressure relief and permeability improvement”, China Coal, 38(8), pp.95-100.
  152. Sun, J., Ma, P., and Chen, J. (2008), “Problems and solutions of formula for calculating permeability coefficient of coal seam by radial flow method”, Saf. Coal Mines, 39, 89-90.
  153. Sun, X., Lin, B. Q., Dong, T., Hui, G. L., Zhang, Z. Y., Zhu, C. J. and Wang, H. (2010), “Deep crossing-hole controlled hydraulic blasting and its application in outburst prevention”, Journal of Mining and Safety Engineering, 27(1), pp.82-86.
  154. Takanohashi, T. (2016), “Coal, Oil Shale, Natural Bitumen, Heavy Oil and Peat – Vol I -Coal Structure and Properties”, Institute for Energy Utilization, National Institute of Advanced Industrial Science and Technology, Japan.
  155. Thararoop, P., Karpyn, Z. T. and Ertekin, T. (2012), “Development of a multi-mechanistic, dual-porosity, dual-permeability, numerical flow model for coalbed methane reservoirs”, Journal of Natural Gas Science and Engineering, 8, pp.121-131.
  156. The Future of Global Coal Production (2022), 2024 Forecast Coal Production, Access: https://www.visualcapitalist.com/future-of-global-coal-production-2021-2024f/.
  157. Thomson, S. and Qzn, Z. (2009), “Review of inseam drilling practice”, Brisbane, QLD, Australian Coal Association Research Program, Report ID: C15075.
  158. Wang, F. (2024), “Research and Application of Coal Seam Permeability Improvement Technology by Sectional Directional Hydraulic Fracturing”, Shock and Vibration, https://doi.org/10.1155/2024/8415703.
  159. Wang, L. and Cheng, Y. (2012), “Drainage and utilization of Chinese coal mine methane with a coal–methane co-exploitation model: Analysis and projections”, Resources Policy, Volume 37, Issue 3, Pages 315-321, ISSN 0301-4207, https://doi.org/10.1016/j.resourpol.2012.06.013.
  160. Wang, T., Hu, W., Elsworth, D., Zhou, W., Zhou, W., Zhao, X., and Zhao, L. (2017), “The effect of natural fractures on hydraulic fracturing propagation in coal seams”, Journal of Petroleum Science and Engineering, 150, 180-190.
  161. Wang, X., Xu, Z., Sun, Y., Zheng, J., Zhang, C. and Duan, Z. (2021), “Construction of multi-factor identification model for real-time monitoring and early warning of mine water inrush”, International Journal of Mining Science and Technology, 31(5), pp.853-866.
  162. Wang, Z. and Liu, J. (2003), “Probe into the problems of methane drainage in China's coal mines and its countermeasures”, Journal of Jiaozuo Institute of Technology: Natural Science, 22(4), pp.241-246.
  163. Warmuzinski, K. (2008), “Harnessing methane emissions from coal mining”, Process. Saf. Environ. Prot. 86, 315–320.
  164. Wei, J., Huang, S., Hao, G., Li, J., Zhou, X. and Gong, T. (2020), “A multi-perforation staged fracturing experimental study on hydraulic fracture initiation and propagation”, Energy Exploration & Exploitation, 38(6), pp.2466-2484.
  165. Wen, Y., Mu, Z., Cai, W. and Wang, H. (2013), “The parameter optimization analysis of borehole pressure relief in coal seam based on orthogonal test”, Coal Mine Safety, 44(5), pp.170-173.
  166. Whittles, D. N., Lowndes, I. S., Kingman, S. W., Yates, C. and Jobling, S. (2007), “The stability of methane capture boreholes around a long wall coal panel”, International Journal of Coal Geology, Volume 71, Issues 2–3, Pages 313-328, ISSN 0166-5162, https://doi.org/10.1016/j.coal.2006.11.004.
  167. Wu, C., Zhang, X., Wang, M., Zhou, L. and Jiang, W. (2018), “Physical simulation study on the hydraulic fracture propagation of coalbed methane well”, Journal of Applied Geophysics, 150, pp.244-253.
  168. Wu, Y., Pan, Z., Zhang, D., Lu, Z. and Connell, L. D. (2018), “Evaluation of gas production from multiple coal seams: a simulation study and economics”, Int. J. Min. Sci. Technol. 28, 359–371.
  169. Wynne, P. (2002), “WollongongCase Study Management of Outburst Risk at Tahmoor Colliery, Coal Operators”, Conference Case Study Management of Outburst Risk at Tahmoor Colliery, Coal Operators’ Conference, pp. 98-104.
  170. Xia, B. W., Liu, C. W., Lu, Y. Y., Liu, Y., Ge, Z. and Tang, J. (2016), “Experimental study of propagation of directional fracture with slotting hydraulic blasting”, Journal of China Coal Society, 41(2), pp.432-438.
  171. Xia, T., Zhou, F., Liu, J. and Gao, F. (2014), “Evaluation of the pre-drained coal seam gas quality”, Fuel, 130, pp.296-305.
  172. Xie, Z. X., Wu, X. G., Long, T. D., Huang, Z. W., Li, G. S., Zou, W. C. and Sun, Z. W. (2023), “Visualization of hydraulic fracture interacting with pre-existing fracture”, Petroleum Science, 20(6), pp.3723-3735.
  173. Xing, Y. Q. and Zhou, L. C. (2011), “Application of measurement method of permeability coefficient of coal seam in methane extraction”, Coal Sci. Tech. Mag., 4, 51–52.
  174. Xu, Y., Zhai, C., Hao, L., Sun, X., Liu, Y., Li, X. and Li, Q. (2011), “The pressure relief and permeability increase mechanism of crossing-layers directional hydraulic fracturing and its application”, Procedia Engineering, 26, pp.1184-1193.
  175. Xue, S., Zheng, C. S., Kizil, M., Jiang, B. Y., Wang, Z. G, Tang, M. Y. and Chen, Z. (2021), “Coal permeability models for enhancing performance of clean gas drainage: A review”, J Petrol Sci Eng; 199:108283.
  176. Yan, F., Lin, B., Zhu, C., Shen, C., Zou, Q., Guo, C. and Liu, T. (2015), “A novel ECBM extraction technology based on the integration of hydraulic slotting and hydraulic fracturing”, Journal of Natural Gas Science and Engineering, 22, pp.571-579.
  177. Yan, S. L. and Xu, Y. (2005), “Numerical simulation of water-coupled charge rock blasting mechanism”, Chinese Journal of Underground Space and Engineering, 1(6), pp.921-924.
  178. Yang, T. H., Tham, L. G., Tang, C. A., Liang, Z. Z. and Tsui, Y. (2004), “Influence of heterogeneity of mechanical properties on hydraulic fracturing in permeable rocks”, Rock mechanics and rock engineering, 37, pp.251-275.
  179. Yanyang, M. A., Jiaokun, W. U., Renjun, F. E. N. G. and Liangwei, L. I. (2022), “Pressure relief gas drainage by directional drilling hydraulic fracturing in hard roof”, Mining Safety & Environmental Protection, 49(6), pp. 52-56.
  180. Yao, H., Kang, Z. and Li, W. (2014), “Deformation and reservoir properties of tectonically deformed coals”, Petrol Explor Dev 41:460–467, https://doi.org/10.1016/S1876-3804(14)60052-5.
  181. Ye, Q., Jia, Z. and Zheng, C. (2017), “Study on hydraulic-controlled blasting technology for pressure relief and permeability improvement in a deep hole”, Journal of Petroleum Science and Engineering, 159, pp.433-442.
  182. Ye, Q., Wang, G., Jia, Z., Zheng, C. and Wang, W. (2018), “Similarity simulation of mining-crack-evolution characteristics of overburden strata in deep coal mining with large dip”, Journal of Petroleum Science and Engineering, Volume 165, Pages 477-487, ISSN 0920-4105, https://doi.org/10.1016/j.petrol.2018.02.044.
  183. Ye, Q., Wang, W., Wang, G. and Jia, Z. (2017b), “Numerical simulation on tendency mining fracture evolution characteristics of overlying strata and coal seams above working face with large inclination angle and mining depth”, Arab. J. Geosci., 10.
  184. Yi, E. B., Mu, Z. L., Dou, L. M., Ju, J. G., Xie, L. and Xu, D. L. (2011), “Study on comparison and analysis on pressure releasing effect of boreholes in soft and hard seam”, Coal Science and Technology, 39(6), pp.1-5.
  185. Yin, H. (2003), “Composite Sealing Material and Its Application”, Shanxi Technology Press, Xi’an.
  186. Yuan, B., Wood, D. A. and Yu, W. (2015), “Stimulation and hydraulic fracturing technology in natural gas reservoirs: Theory and case studies (2012–2015)”, Journal of Natural Gas Science and Engineering, 26, pp.1414-1421.
  187. Yuan, L. (2004), “Theory and technology of gas drainage in soft and low permeability coal seams”, Coal Industry Press, pp.12.
  188. Yuan, L. (2009), “Theory of pressure-relieved gas extraction and
    technique system of integrated coal production and gas extraction”,     Journal of China Coal Society, 34(1):1–8.
  189. Yuan, L. X. and Nong, L. U. (2013), “Development orientation and status of key technology for mine underground coal bed methane drainage as well as coal and gas simultaneous mining”, Coal Science and Technology, (9).
  190. Yuan, L., Yu, Q. and Li, P. (2007), “Method for remote unloading gas drainage in low permeability, high gas and soft, thick coal seam”, (patent): 03113094.1[P].12.
  191. Zhai, C., Xiang, X., Yu, X., Peng, S., Ni, G. H. and Li, M. (2013), “Sealing performance of flexible gel sealing material of gas drainage borehole”, Journal of China University of Mining & Technology, 42(6), pp.982-988.
  192. Zhang, D. S., Liu, H. L., Fan, G. W. and Wang, X. F (2015), “Connotation and prospection on scientific mining of large Xinjiang coal base”, IJMME 2015, 32, 1–6.
  193. Zhang, H. (2013), “Application of high efficient gas drainage technology with double casing pipe to mining seam”, Coal Sci. Technol., 4, p.20.
  194. Zhang, J. (2014), “Numerical simulation of hydraulic fracturing coalbed methane reservoir”, Fuel, 136, pp.57-61.
  195. Zhang, L., Ren, T. and Aziz, N. (2014), “Influences of temperature and moisture on coal sorption characteristics of a bituminous coal from the Sydney Basin, Australia”, International Journal of Oil, Gas and Coal Technology, 8(1), pp.62-78.
  196. Zhang, L., Zhou, L. C., Wang, H. W., Pan, Y. Q., Sun, J. L. and Sun, B. L. (2011), “Application of measurement method of permeability coefficient of coal seam in Pinggou Coal Mine”, Hydraul. Coal Min. Pipeline Transp., 1, 3–5.
  197. Zhang, X., Wang, H., Yang, M., Wang, P. And Han, L. (2023), “Study and application on influence mechanism of instability and collapse of drainage borehole on gas drainage”, Journal of China Coal Society, 48(8), pp. 3102-3115.
  198. Zhao, Z. and Guo, S. (1999), “Development of KFB borehole-sealing pump with cement and condensed slurry in mine”, Mining Safety and Environmental Protection, 2, pp.19-20.
  199. Zheng, C., Chen, Z., Kizil, M., Aminossadati, S., Zou, Q. and Gao, P. (2016), “Characterisation of mechanics and flow fields around in-seam methane gas drainage borehole for preventing ventilation air leakage: a case study”, Int. J. Coal Geol. 162, 123–138.
  200. Zheng, C., Jiang, B., Xue, S., Chen, Z. and Li, H. (2019), “Coalbed methane emissions and drainage methods in underground mining for mining safety and environmental benefits: A review, Process Safety and Environmental Protection, Volume 127, Pages 103-124, ISSN 0957-5820, https://doi.org/10.1016/j.psep.2019.05.010.
  201. Zheng, C., Kizil, M. S., Aminossadati, S. M. and Chen, Z. (2018a), “Effects of geomechanical properties of interburden on the damage-based permeability variation in the underlying coal seam”, Journal of Natural Gas Science and Engineering, 55, pp.42-51.
  202. Zheng, C., Kizil, M. S., Chen, Z. and Aminossadati, S. M. (2017b), “Effects of coal properties on ventilation air leakage into methane gas drainage boreholes: Application of the orthogonal design”, Journal of Natural Gas Science and Engineering, 45, pp.88-95.
  203. Zheng, C., Kizil, M. S., Chen, Z. and Aminossadati, S. M. (2018b), “Role of multi-seam interaction on gas drainage engineering design for mining safety and environmental benefits: Linking coal damage to permeability variation”, Process Safety and Environmental Protection, 114, pp.310-322.
  204. Zheng, C., Kizil, M., Chen, Z. and Aminossadati, S. (2017a). “Effects of coal damage on permeability and gas drainage performance”. Int. J. Mining Sci. Technol. 27, 783–786.
  205. Zheng, C., Lin, B., Kizil, M. S., Aminossadati, S. M., Li, H. and Chen, Z. (2018c), “Analysis on the multi-phase flow characterization in cross-measure borehole during coal hydraulic slotting”, International Journal of Mining Science and Technology, Volume 28, Issue 4, Pages 701-705, ISSN 2095-2686, https://doi.org/10.1016/j.ijmst.2018.05.006.
  206. Zhou, F. B., Li, J. H., Ze, X., Liu, Y. K., Zhang, R. G. and Shen, S. J. (2009), “A study of the second hole sealing method to improve gas drainage in coal seams”, J China Univ Min Technol, 6, pp.764-768.
  207. Zhou, F. B., Sun, Y. N., Li, H. and Yu, G. (2016), “Research on the theoretical model and engineering technology of the coal seam gas drainage hole sealing”, Journal of China University of Mining & Technology, 45(3), pp.433-439.
  208. Zhou, H., Zhang, R., Cheng, Y., Dai, H., Ge, C. and Chen, J. (2015), “Methane and coal exploitation strategy of highly outburst-prone coal seam configurations”, Journal of Natural Gas Science and Engineering, Volume 23, Pages 63-69, ISSN 1875-5100, https://doi.org/10.1016/j.jngse.2015.01.018.
  209. Zhou, H., Zhang, R., Cheng, Y., Dai, H., Ge, C. and Chen, J. (2015), “Methane and coal exploitation strategy of highly outburst-prone coal seam configurations”, Journal of Natural Gas Science and Engineering, 23, pp.63-69.
  210. Zhou, S. (1984), “Testing on the two kinds of coal seam permeability coefficient of determination methods with computer”, J. China Inst. Min. Technol, 13, 38-47.
  211. Zhou, S. N. (1980), “Measurement and calculation of coal seam permeability coefficient”, J. China Inst. Min. Technol, 1, 1-5.
  212. Zhou, X., Li, X., Bai, G., Chai, L., Wang, Y., Xiao, M. and Xia, S. (2022), “Research method of pressure relief and permeability enhancement in low permeability coal seam: A review”, AIP Advances, 12(1).
  213. Zhu, W. C., Wei, C. H., Liu, J., Qu, H. Y. and Elsworth D. (2011), “A model of coal-gas interaction under variable temperatures”, Int J Coal Geol;86:213–21.
  214. Zhuravlev, Y. N. and Porokhnov, A. N. (2019), “Computer simulation of coal organic mass structure and its sorption properties”, Int J Coal Sci Technol 6, 438–444, https://doi.org/10.1007/s40789-019-0256-3.
  215. Zou, Q., Lin, B., Zheng, C., Hao, Z., Zhai, C., Liu, T., Liang, J., Yan, F., Yang, W. and Zhu, C. (2015), “Novel integrated techniques of drilling–slotting–separation-sealing for enhanced coal bed methane recovery in underground coal mines”, Journal of Natural Gas Science and Engineering, Volume 26, Pages 960-973, ISSN 1875-5100, https://doi.org/10.1016/j.jngse.2015.07.033.

This study investigates gas drainage mechanisms and techniques for low-permeability coal seams. It examines coal structure, gas-flow behaviour, permeability controls, and internationally applied drainage methods. Permeabilityenhancement approaches, including hydraulic fracturing, hydraulic slotting, and controlled blasting, are evaluated alongside borehole design and operating factors. Sensitivity analysis assesses the effects of coal-seam permeability, gas pressure, and drainage configuration on performance. The study integrates theoretical mechanisms with engineering practices to support safer mining, improved methane recovery, and reduced greenhouse-gas emissions.

Keywords : Coal permeability; Coalbed methane; Gas Drainage; Hydraulic Fracturing; Low-Permeability Coal Seam.

Paper Submission Last Date
30 - November - 2026

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