慈母山隧道穿越断层破碎带开挖支护技术分析  

Analysis on Excavation and Support Technique of the Fault and Crushing Zone in Cimushan Tunnel

作　　者：杨金虎[1,2] 

机构地区：[1]煤炭科学研究总院重庆研究院,重庆400037 [2]重庆大学资源与环境科学学院,重庆400045

出　　处：《地下空间与工程学报》2011年第2期361-365,384,共6页Chinese Journal of Underground Space and Engineering

摘　　要：断层破碎带是三车道大断面隧道开挖支护施工中难度大、容易出现事故的地段。由于断层破碎带地质状况及结构受力条件复杂,施工难度大,故支护参数的设计极为重要。本文结合慈母山一号隧道实例,根据其中一段断层破碎带的地质特征,进行了地质条件和设计支护参数的介绍与分析,运用隧道信息化施工技术为设计及施工反馈信息和提供服务,最终慈母山一号隧道成功穿越本段断层破碎带。提出了隧道遇到断层破碎带时,进行设计和支护的一些思考和建议,为类似工程设计和施工提供参考。The fault and crushing zone is very difficult for construction and is a catastropic section of the three-lane tunnel with large cross section during the course of excavation and supporting.The design of support parameter in the fault and crushing zone is very important because of complex geological formation and loading conditions under construction.In this paper,the geological conditions and design of support parameter are introduced and analyzed according to the geological features of one section based on the example of Cimushan tunnel No.1.At the same time,information construcions of tunnel are adopted to be fed back and served for design and construction.The success of Cimushan tunnel No.1 through the surrounding rock section with fault can serve as reference to the design and construction of tunnel in similar fault and crushing zone.

关 键 词：断层破碎带 三车道隧道 支护技术 监控量测 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]