西秦岭特长隧道穿越F6断层破碎带施工技术
Construction Techniques for the Extra-Long West Qinling Tunnel Passing Through an F6 Fault and Fractured Zone
郑文筠1
作者信息
- 1. 兰渝铁路有限责任公司,兰州730000
- 折叠
摘要
西秦岭特长铁路隧道围岩地质构造复杂,断层较为发育,且处于高地应力区域,因此施工难度较大.在隧道通过断层破碎带施工过程中由于采用了超前地质预报、全程监控量测以及超前小导管预支护、帷幕注浆、三台阶爆破法等技术措施和施工工艺,取得了稳步掘进的效果,有效地防止了塌方等事故的发生,为断层破碎带施工积累了经验.
Abstract
The construction of the West Qinling extra-long railway tunnel was very difficult since the geological structure of the surrounding rock is complex, the fault is developed, and it is located in a zone under high ground stress. Stable excavation was achieved during the construction passing through the fault and fracture zone thanks to advance geological forecasting, monitoring and measuring, pre-support with small pipes, curtain grouting, and three-bench blasting, all of which prevented any collapsing.
关键词
铁路隧道/断层破碎带/施工技术Key words
Railway tunnel/Fault and fractured zone/Construction technique引用本文复制引用
出版年
2012
NETL
NSTL
维普
万方数据