连续脉冲冲击震动作用下煤层钻孔瓦斯抽采的试验研究

doi:10.13722/j.cnki.jrme.2014.0563

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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 kJ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。

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关键词 ：采矿工程, 瓦斯抽采, 冲击震动, 连续脉冲

Abstract：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 kJ 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.

Key words： mining engineering coalbed methane drainage shock vibration continuous pulse

引用本文:

胡水根1，2，严家平1，刘盛东3. 连续脉冲冲击震动作用下煤层钻孔瓦斯抽采的试验研究[J]. 岩石力学与工程学报, 2015, 34(s1): 2936-2940.
HU Shuigen1，2，YAN Jiaping1，LIU Shengdong3. EXPERIMENTAL RESEARCH ON COAL DRILLS GAS DRAINAGE WITH CONTINUOUS PULSE SHOCK AND VIBRATION. , 2015, 34(s1): 2936-2940.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.0563 或 http://www.rockmech.org/CN/Y2015/V34/Is1/2936

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