CAJ | 학술논문

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。
련속맥충충격진동가개변매체중와사적부존상태，개선매층적삼투성，제고와사추채효솔。통과실험실모의함와사매체，기체석방속도재련속맥충충격진동영향시간내제승30%이상。설계료일충괄용우매광정하조작，순시능량가체60 kJ능량적련속맥충충격진동장치，재이포치료6개“하향”복사상천층부압와사추채시험공적매층중진행시험，결과표명：감측적찬공기체류량급농도균유제고，실제와사추채효솔제고료약56%，유효영향쇠감시간약54 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 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.