中文摘要：

为提高大断面岩巷掘进速度,对爆破参数进行了优化设计,同时还改进和优化了装岩运输方案。现场试验结果表明：优化后的爆破参数和装岩运输方案明显提高了岩巷掘进速度,月进尺由原来的60m提高到目前的90m。且爆破块度均匀,抛掷距离较小,爆破后巷道成型良好。该施工工艺高效、安全、可操作性强,对类似大断面岩巷中深孔爆破有指导意义。

英文摘要：

In order to improve the excavation velocity of hard rock drift, the blasting parameters and mucking and transporting scheme were designed and optimized. The site experimental results show that the excavation velocity of rock drift is greatly improved, and the drill footage per month is increased to current 90 meters from 60 meters. After blasting operation, the rock blasting fragmentation is homogeneous, casting distance is small, and drift molding is good. This construction technology is high efficient, safety and enough of maneuverability, which offers guidance for the similar engineering.