冷家坡2号隧道硬岩钻爆技术  

Drilling and Blasting Technology for Hard Rock in Lengjiapo No.2 Tunnel

作　　者：张庆军[1] 

机构地区：[1]铁道部第十一工程局

出　　处：《爆破》1999年第3期83-86,共4页Blasting

摘　　要：在坚硬完整的岩石中进行铁路隧道开挖只用气腿式凿岩机钻孔,创下了月成洞超百米的好成绩。An airleg rock drill is simply used to excavate hard and compact rock in a railway tunnel, and the result is satifactory. The tri empty hole trianglar cutting techynology with hole utilization ratio of 90% and smooth blasting technology with semi hole ratio of 85% are obtained, and their applications and experiments in tunnel excavation are introduced.

关 键 词：隧道掘进 掏槽爆破 光面爆破 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]