高风险隧道穿越F8断层段方案研究  

Scheme Study on High Risk Tunnel Crossing F8 Fault Section

作　　者：周水强 ZHOU Shui-qiang(No Division,China Railway Tunnel Group Co.,Ltd.,Chongqing 400000,China)

机构地区：[1]中铁隧道集团一处有限公司,重庆400000

出　　处：《企业技术开发》2018年第8期61-65,70,共6页Technological Development of Enterprise

摘　　要：鹫峰山1号隧道全长16 646.16 m,为全线第二长隧道,需要穿越F8断层。文章在对原设计进行分析的基础上,结合超前地质预报,按照地下水"排堵结合、以排为主"的原则,研究了隧道穿越F8断层段方案。并从超前周边预注浆、超前预支护、支护结构、排水系统、结构监测、分区防水等方面制定严格控制的技术措施。确保了隧道穿越F8断层破碎带的施工安全,也为今后运营安全提供技术保障,并可为类似工程提供技术参考。Jiufengshan No. 1 tunnel is 16 646.16 m long, and it is the second longest tunnel in the whole line. It needs to cross the F8 fault. Based on the analysis of the original design, combined with advanced geological prediction, according to the principle of groundwater drainage and plugging combined with drainage, this paper studied the scheme of tunnel crossing F8 fault section. From the aspects of pre-grouting, pre-supporting, supporting structure, drainage system, structural monitoring and zonal water- proofing,strict control measures were formulated.It ensured the construction safety of tunnel crossing F8 fault fractured zone,pro- vided technical guarantee for future operation safety ,and provided technical reference for similar projects.

关 键 词：鹫峰山1号隧道 穿越 F8断层层 技术方案 

分 类 号：U455[建筑科学—桥梁与隧道工程]