地下大直径深孔空气间隔装药结构探讨

AN APPROACH TO CHARGING CONSTRUCTION WITH AIR SPACE FOR LARGE-DIAMETER LONGHOLE IN UNDERGROUND MINES

通过理论分析、模拟试验和工业试验，结果表明，空气间隔装药可以降低爆破压力峰值、延长爆破作用时间；而调整空气间隔长度，可以加强对爆破作用控制，改善爆破效果。文章论证了空气间隔长度存在一个最佳范围，并将其在铜录山矿大孔径深孔采矿时的空气间隔长度调整中加以应用。

Through the theoretical analysis,simulation test and coinmercial-scale trial,the results have shown that the air space can decrease the blasting pressure peak and ex-tend the time of blasting action,By adjusting the length of air space, the blasting actioncontrol and the blasting effect can be improved. It has been proved that there is an optimalrange of air space. And this optimai range was uesd for the adjustment of air space lengthin the large-diameter longhole mining in Tonglushan mine.