摘要
分析了软弱围岩隧道采用大断面开挖的可行性,介绍了周边孔拱部光面爆破、边墙预裂爆破的新技术,为类似条件下的隧道开挖提供一些可行经验。
This paper analyzes the feasibility of adopting the large-section excavation in soft wall rock tunnel, introduces the new techniques of the smooth blasting on the arch part of peripheral hole and the side-wall presplitting blasting, which provide some practicable experiences for the tunnel excavation under similar conditions.
出处
《科技情报开发与经济》
2008年第16期216-217,共2页
Sci-Tech Information Development & Economy
关键词
软弱围岩隧道
大断面开挖
光面爆破
顸裂爆破
soft wall rock tunnel
large-section excavation
smooth blasting
presplitting blasting
