施工技术 2013年12月上 78 CONSTRUCTION TECHNOLOGY 第42卷第23期 D01:10.7672/sgj82013230078 软岩隧道大变形机理及支护参数优化分析* 李勇峰12，孙洋1，徐颖，陈建平1 (1.中国地质大学（武汉）工程学院，湖北武汉430074；2.湖北省交通规划设计院，湖北武汉430051) [摘要]谷竹高速公路油坊坪隧道在施工过程中曾多次出现大变形.为了控制变形，确保施工安全，在现场地质调 研和监控量测的基础上，从地质条件、围岩条件、地下水条件、地应力条件以及施工因素等方面分析了大变形机理. 通过现场试验，对不同支护刚度下初支围岩压力、二衬围岩压力以及围岩的变形情况进行分析，结合对监测数据的 分析结果确定了油坊坪隧道合理的支护参数形式. [关键词]隧道工程；软岩隧道；变形；监测；支护；优化 [中图分类号]U451.2 [文献标识码]A [文章编号]1002-8498(2013)23-0078-04 Analysis of Large Deformation Mechanism and Support Parameter Optimization in Soft Rock Tunnel Li Yongfeng.2 Sun Yang' Xu Ying' Chen Jianping' (1.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China; 2.Hubei Communications Planning and Design Institute Wuhan Hubei 430051 China) Abstract:The large deformation happened for several times in Youfangping Tunnel of Gucheng-Zhuxi Highway during construction.In order to control deformation and ensure the safety of the construction this paper analyzes the causes of the deformation which es from the geological conditions surrounding rock conditions ground stress conditions construction conditions ete.Based on field investigation and monitoring measurement this paper analyzes the condition of the first lining surrounding rock pressure secondary lining surrounding rock pressure and the deformation for different supporting stiffness.The reasonable supporting parameters form is confirmed based on analyzing monitoring data. Key words:tunnels;soft rock tunnels;deformation;monitoring;suppor...
软岩隧道大变形机理及支护参数优化分析.pdf
