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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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

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

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