浅析合理掏槽提高大断面岩巷掘进效率方法

TO IMPROVE THE LARGE CROSS SECTION ROCK TUNNELING EFFICIENCY WITH REASONABLE CUTHOLE

针对陈四楼煤矿岩巷掘进爆破效率低,爆破后大块率高的问题。通过对直眼掏槽、斜眼掏槽、混合掏槽进行现场比较,选择最为合理的掏槽方。

According to the blasting efficiency is low in rock roadway,and the rate of massive problems after blasting in Chensilou Coal Mine, By the straight hole,angled cut, mixed cut scene, selecting the most reasonable cuthole for selection.