摘要
本文介绍了小断面硬岩巷道的爆破掘进施工经验。通过现场试验的分析比较,垂直楔形掏槽内加中心直眼掏槽的混合掏槽方案提高了炮眼利用率和日循环进尺,降低了火工品消耗,该经验对类似具有一定的参考作用。
In this paper construction experience on blasting excavation in hard rock roadway of small cross section was introduced. Through analysis and comparison of field trials,mixed cut method of vertical wedge cut and center undercutting were used to improve the utilization and quantities of explosives,which are useful for blasting excavation in hard rock roadway of small cross section.
出处
《煤矿爆破》
2015年第4期23-25,共3页
Coal Mine Blasting
关键词
小断面
硬岩巷道
掏槽方式
爆破效果
small cross section
hard rock roadway
slotting mode
blasting effect
