EXPERIMENTAL RESEARCH ON COAL DRILLS GAS DRAINAGE WITH CONTINUOUS PULSE SHOCK AND VIBRATION
HU Shuigen1,2,YAN Jiaping1,LIU Shengdong3
(1. School of Earth and Environment,Anhui University of Science and Technology,Huainan,Anhui 232001,China;
2. Department of Mining Engineering,Huainan Vocational and Technical College,Huainan,Anhui 232001,China;3. State Key Laboratory of Deep Geomechanics and Underground Engineering,China University of Mining and Technology,Xuzhou,
Jiangsu 221116,China)
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.
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.
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