摘要
通省隧道主要穿越的地层为元古界武当群片岩,属于变质软岩,施工中多次出现围岩大变形与垮塌,严重影响了正常施工。本文从地质调查、室内试验、监控量测等方面,采用X射线粉晶衍射矿物成分分析、物理力学试验、现场测量等手段,分析了通省隧道变质软岩的变形破坏特征,重点研究了变质软岩变形破坏的孕灾环境及灾变因子,并通过AHP层次分析法确定了各灾变因子的权重,以为采取针对性的防治措施提供依据。
Tongsheng tunnel passes through the strata of Proterozoic Wudang Group（Pt2wd） schist occurring as the metamorphic soft rock.In the construction process,large deformation and collapses have occurred many times in the surrounding rock,seriously affecting the normal construction.From the geological surveys,laboratory experiments and monitoring measurement,this paper,adopting X-ray diffraction mineral composition analysis,physical and mechanical testing,field monitoring and other means,analyzes the characteristics of soft metamorphic rock tunnel deformation and failure,and focuses the discussion on the catastrophe factors of soft rock deformation and failure and their formation environment.The paper also uses the analytic hierarchy process to determine the weight of each factor so as to provide the proof for taking relevant measures.
出处
《安全与环境工程》
CAS
北大核心
2013年第2期146-151,共6页
Safety and Environmental Engineering
基金
国家自然科学基金项目(41102196)
中央高校基本科研业务费专项资金项目(CUGL110215)
水资源与水电工程科学国家重点实验室开放基金项目
岩土钻掘与防护教育部工程研究中心开放研究基金项目
关键词
通省隧道
变质软岩
变形破坏
灾变因子
权重
Tongsheng tunnel
metamorphic soft rock
deformation and failure
catastrophe factor
weight
