摘要
土石分界地层大断面黄土隧道,由于其岩体石质较差,缺乏自稳能力,施工极其困难,安全风险极大。文章结合中南铁路土石分界地层中大断面黄土隧道的施工实践,阐述了大断面黄土隧道土石分界段爆破法施工的技术要点,研究分析了合理的施工开挖顺序、台阶高度和长度,以及围岩量测和施工注意事项。
Construction of a tunnel at the dividing line between loess and rock is difficult because and inadequate self-stability. This paper introduces the key points, proper excavation procedures, and bench length for the construction of the large-section loess railway tunnel at the dividing line based on the successful completion of the Zhongnan railway tunnel of poor rock mass and bench height of loess and rock
出处
《现代隧道技术》
EI
北大核心
2013年第1期139-142,共4页
Modern Tunnelling Technology
关键词
大断面黄土隧道
土石分界段
台阶法
光面爆破
Large-section railway tunnel
Dividing line of loess and rock
Bench method
Smooth blasting
