圆型隧洞超硬岩爆破进尺与掏槽方式探讨

Discussion About Footage and Cutting Patterns of Circular Tunnel in Supper Hard rock

介绍了圆型隧洞施工中,在超硬围岩条件下通过不同的钻爆试验,采用不同的掏槽方式,产生不同的爆破进尺效果,从而确定选择合理的掏槽方式和爆破参数,以达到最佳进尺确保进度的要求。

This paper introduces that several blasting experiments with different cutting patterns while driving circular tunnel in supper hard rock, and they brought different blasting footage. Tnus, we can get the best cutting pattern and explosion parameters, and the best footage too.