水力冲孔试验自1970年以来,陆续开辟了1403、1409、1405三个试验区,前两个试验区已经回采结束,后一个试验区正在进行煤巷掘进,高瓦斯压力试验区2302已开始准备。在试验的同时,根据生产急需,应用已取得的成果,还处理了1412、1410两个生产区的未解放带。截至1976年6月底止,应用水力冲孔共揭穿石门5个,掘进煤巷1250米,大面积卸压2万6千多米~2,采出煤量7万多吨。 Hydraulic punching test Since 1970, three test zones of 1403, 1409 and 1405 have been opened up one after another. The first two test zones have been completed and the latter is undergoing excavation. The high gas pressure test zone 2302 has been prepared . At the same time as the test, the undeveloped zones of the two producing areas of 1412 and 1410 were also dealt with on the basis of the urgent need for production and the application of the results already achieved. Up to the end of June 1976, a total of 5 stone gates were drilled by hydraulic punching, 1250 meters for coal tunneling, and more than 26,000 meters ~ 2 for large-area pressure relief, with a coal output of more than 70,000 tons.