深孔卸压爆破控制冲击地压的机理及应用

随着煤矿开采深度的增加,冲击地压危险越来越大,已成为严重威胁矿井安全生产的主要灾害。深入分析了深孔卸压爆破影响区域及其控制冲击矿压的机理,介绍了爆破卸压工艺,并对深孔卸压爆破效果进行了分析。实践证明,深孔卸压爆破可有效地减缓煤岩体应力集中,控制冲击地压的发生,实现煤矿安全生产。

Mechanism and application of deep hole pressure relief blast to control rock burst

With the increase of mining depth,the possibility for rock burst increases correspondently.It has become a major factor which endangers the safe operation of coal mines.In this article,we make an analysis on the impacted area of deep-hole blast as well as the mechanics for rock burst with this technology.Of course,specific technics for blasting stress relief is included.Furthermore,we analyzed the effect of deep-hole blast on rock burst control.Practice shows that,deep-hole blast works effectively on relief of stress within stratum thus reduces the possibility of rock burst and is beneficial for safe operation of coal mine.