连续脉冲冲击震动作用下煤层钻孔瓦斯抽采的试验研究
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摘要
连续脉冲冲击震动可改变煤体中瓦斯的赋存状态,改善煤层的渗透性,提高瓦斯抽采效率。通过实验室模拟含瓦斯煤体,气体释放速度在连续脉冲冲击震动影响时间内提升30%以上。设计了一种适用于煤矿井下操作,瞬时能量可达60 k J能量的连续脉冲冲击震动装置,在已布置了6个"下向"辐射状穿层负压瓦斯抽采试验孔的煤层中进行试验,结果表明:监测的钻孔气体流量及浓度均有提高,实际瓦斯抽采效率提高了约56%,有效影响衰减时间约54 min。
The continuous pulse shock and vibration can change the occurrence of gas in coal and improve the permeability of the coal seam and enhance the efficiency of gas drainage. Deformed coal containing gas was simulated in the laboratory. With the influence of continuous pulse shock and vibration,the release of gas speed can be improved above 30%. A device which is suit for the underground coal mine and can make the instantaneous vibration energy reach to 60 k J was designed. The field test was performed through 6 ‘downward' radial boreholes. The results show that the speed of gas drainage increases about 56% and the effective fall time is about 54 min.
引文
[1]张德江.大力推进煤矿瓦斯抽采利用[J].中国煤层气,2010,7(1):3–5.(ZHANG Dejiang.Vigorously promote the use of coal mine gas drainage[J].China Coalbed Methane,2010,7(1):3–5.(in Chinese))
    [2]DENNIS B,NAJ A.Actions to improve coal seam gas drainage performance[C]//Underground Coal OperatorsConference,[S.l.]:[s.n.],2011:307–314.
    [3]袁亮.高瓦斯矿区复杂地质条件安全高效开采关键技术[J].煤炭学报,2006,31(2):174–178.(YUAN Liang.Key technique to high efficiency and safe mining in highly gassy mining area with complex geologic condition[J].Journal of China Coal Society,2006,31(2):174–178.(in Chinese))
    [4]OGIEGL K,LUBRYKAl M,KUTKOWSK II J,et al.矿山震动对工作面瓦斯涌出量的影响[J].矿山压力与顶板管理,2005,(2):109–111.(OGIEGL K,LUBRYKAl M,KUTKOWSK II J,et al.Mine seismic impact on the face of gas emission[J].Ground Pressure and Strata Management,2005,(2):109–111.(in Chinese))
    [5]陈波,郑文涛,梁汉东,等.地震活动与煤矿瓦斯溢出事故之间的影响关系[J].煤炭学报,2005,30(4):447–450.(CHEN Bo,ZHENG Wentao,LIANG Handong,et al.Interaction of earthquake activity and gas accident in coal mining underground[J].Journal of China Coal Society,2005,30(4):447–450.(in Chinese))
    [6]LI T,CAI M F,CAI M.Earthquake-induced unusual gas emission in coalmines—a km-scale in-situ experimental investigation at Laohutai mine[J].International Journal of Coal Geology,2007,(71):209–224.
    [7]姜永东,鲜学福,易俊,等.声震法促进煤中甲烷气解吸规律的实验及机制[J].煤炭学报,2008,33(6):675–680.(JIANG Yongdong,XIAN Xuefu,YI Jun,et al.Experimental and mechanical on the features of ultrasonic vibration stimulating the desorption of methane in coal[J].Journal of China Coal Society,2008,33(6):675–680.(in Chinese))
    [8]李建楼,严家平,王来斌,等.煤体瓦斯在声波场作用下的放散特征研究[J].煤炭学报2012,37(2):264–267.(LI Jianlou,YAN Jiaping,WANG Laibin.Study of characteristics of coal gas radiation in acoustic field[J].Journal of China Coal Society,2012,37(2):264–267.(in Chinese))
    [9]严家平,李建楼.声波作用对煤体瓦斯渗透性影响的实验研究[J].煤炭学报,2010,35(增):81–85.(YAN Jiaping,LI Jianlou.Experimental study of acoustic effects on coal gas permeability[J].Journal of China Coal Society,2010,35(Supp.):81–85.(in Chinese))
    [10]李铁,蔡美峰,王金安,等.深部开采冲击地压与瓦斯的相关性探讨[J].煤炭学报,2005,30(5):562–567.(LI Tie,CAI Meifeng,WANG Jin′an,et al.Discussion on relativity between rockburst and gas in deep exploitation[J].Journal of China Coal Society,2005,30(5):562–567.(in Chinese))
    [11]高坤,王继仁,贾宝山,等.高压空气冲击煤体增透技术实验研究[J].矿业安全与环保,2011,38(6):9–12.(GAO Kun,WANG Jiren,JIA Baoshan,et al.Experimental study on the impact of high-pressure air coal technology increased permeability[J].Mining Safety and Environmental Protection,2011,38(6):9–12.(in Chinese))
    [12]赵振保.变频脉冲式煤层注水技术研究[J].采矿与安全工程学报,2008,25(4):486–489.(ZHAO Zhenbao.Study of technology of variable frequency pulse water infusion into coal seam[J].Journal of Mining and Safety Engineering,2008,25(4):486–489.(in Chinese))
    [13]翟成,李贤忠,李全贵.煤层脉动水力压裂卸压增透技术研究与应用[J].煤炭学报,2011,36(12):1 996–2 001.(ZHAI Cheng,LI Xianzhong,LI Quangui.Research and application of coal seam pulse hydraulic fracturing technology[J].Journal of China Coal Society,2011,36(12):1 996–2 001.(in Chinese))
    [14]LAUBACHSE,MARRETTRA,OLSONJE,et al.Characteristics and origins of coal cleat:a review[J].International Journal of Coal Geology,1998,35(1/2):175–207.
    [15]LIU H,SANG S,FORMOLO M,et al.Production characteristics and drainage optimization of coalbed methane wells:a case study from low-permeability anthracite hosted reservoirs in southern Qinshui,Basin,China[J].Energy for Sustainable Development,2013,17(5):412–423.

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