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YAN Zhiming, ZHANG Xiang, WANG Liang, LIU Ang. Study on Influence Law of Coal Permeability Anisotropy on Gas Pre-drainage in Mining Seam[J]. Mining Safety & Environmental Protection, 2017, 44(5): 45-48.
Citation: YAN Zhiming, ZHANG Xiang, WANG Liang, LIU Ang. Study on Influence Law of Coal Permeability Anisotropy on Gas Pre-drainage in Mining Seam[J]. Mining Safety & Environmental Protection, 2017, 44(5): 45-48.

Study on Influence Law of Coal Permeability Anisotropy on Gas Pre-drainage in Mining Seam

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  • Received Date: July 25, 2017
  • Revised Date: September 14, 2017
  • Available Online: September 16, 2022
  • To counter the problems of poor permeability and difficult gas drainage of 8# coal seam in Xinjing Mine, study was carried out on the influence law of the permeability anisotropy upon the gas drainage in the mining seam by laboratoty experiment and field test. The laboratoty results showed that permeability of coal was the biggest along its strike, the next along its inclination and the smallest along its vertical direction, and the dominant direction of gas seepage was parallel to the coal seam strike. The field gas drainage test showed that the average gas drainage flow from the hole with the included angle of 90° to the seam strike reached 0.11 m3/min, and the average gas drainage flow from the hole with the included angle of 30° to the seam strike was only 0.015 m3/min, that is to say, the larger the included angle of the hole to the seam strike, the greater the gas drainage flow; after gas drainage for 60 days, the residual gas content in the area with the larger included angle of the hole to the seam strike decreased greatly. The research results have a certain guiding significance for the rational arrangement of the gas pre-drainage holes and the improvement of gas drainage efficiency.
  • [1]
    王施惠,王军. 马堡煤矿厚煤层综放工作面煤与瓦斯共采技术研究[J]. 矿业安全与环保,2016,43(6):67-70.
    [2]
    尹光志,李文璞,李铭辉,等. 加卸载条件下原煤渗透率与有效应力的规律[J]. 煤炭学报,2014,39 (8):1497-1503.
    [3]
    袁欣鹏,梁冰,孙维吉,等. 卸压煤层瓦斯抽采渗透率演化模型研究[J]. 中国安全科学学报,2016,26 (2):127-131.
    [4]
    王登科,彭明,付启超,等. 瓦斯抽采过程中的煤层透气性动态演化规律与数值模拟[J]. 岩石力学与工程学报,2016,35 (4):704-712.
    [5]
    徐刚,刘超,金洪伟. 抽采过程中含瓦斯煤渗透率动态变化特征[J]. 煤炭技术,2017,36 (3):159-162.
    [6]
    臧杰. 煤渗透率改进模型及煤中气体流动三维数值模拟研究[D].北京:中国矿业大学(北京),2015.
    [7]
    ZANG J, WANG K, ZHAO Y X. Evaluation of gas sorption-induced internal swelling in coal [J]. Fuel, 2015, 143:165-172.
    [8]
    ZANG J, WANG K. Gas sorption-induced coal swelling kinetics and its effects on coal permeability evolution: Model development and analysis [J]. Fuel, 2017, 189:164-177.
    [9]
    谢和平,高峰,周宏伟,等.煤与瓦斯共采中煤层增透率理论与模型研究[J]. 煤炭学报,2013,38 (7):1101-1108.
    [10]
    周东平,沈大富,余模华,等.地应力对瓦斯渗流特性影响的试验研究[J]. 矿业安全与环保,2012,39(S1):6-8.
    [11]
    程远平,刘洪永,郭品坤,等.深部含瓦斯煤体渗透率演化及卸荷增透理论模型[J]. 煤炭学报,2014,39(8):1650-1658.
    [12]
    程波,高月.含瓦斯煤非线性渗流参数的测试方法研究[J]. 矿业安全与环保,2017,44(2):1-6.
    [13]
    WANG K, ZANG J, WANG G D, et al. Anisotropic permeability evolution of coal with effective stress variation and gas sorption: Model development and analysis [J]. International Journal of Coal Geology, 2014, 130:53-65.
    [14]
    赵宇,张玉贵,岳高伟,等.煤层渗透性各向异性规律的实验研究[J].中国煤层气,2017,14 (1):32-35.
    [15]
    李丹琼,张士诚,张遂安,等.基于煤系渗透率各向异性测试的水平井穿层压裂效果模拟[J].石油学报,2015,36(8):988-994.
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