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通过试验发现大顶山矿区岩石巷道爆破主要存在围岩超欠挖严重和半孔痕保留率低等问题,有针对性地提出了解决这些问题的措施。对于改善地下矿山破碎岩体小断面巷道爆破效果具有一定的参考价值。
Through the test, it is found that the blasting of rock roadway in Dadingshan Mining Area is mainly caused by the serious problems of over-under-excavation and low retention rate of half-hole marks, and some measures to solve these problems are put forward. It is of certain reference value for improving the blasting effect of small section roadway in underground mine broken rock mass.