考虑孔隙水作用的浅埋隧道围岩变形规律分析  

Analysis of Surrounding Rock Deformation in Shallow Tunnel Considering Pore Water Action

作　　者：凌涛 孙望成 刘翔 彭学军 张道兵 LING Tao;SUN Wangcheng;LIU Xiang;PENG Xuejun;ZHANG Daobing(First Engineering Co.,Ltd.,China Railway No.5 Bureau Group,Changsha 410117,China;School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]中铁五局集团第一工程有限责任公司,湖南长沙410117 [2]湖南科技大学资源环境与安全工程学院,湖南湘潭411201

出　　处：《矿业工程研究》2024年第1期16-20,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(52074116,52004088)。

摘　　要：为研究孔隙水作用下浅埋隧道围岩的变形规律,以甘肃省平凉市潘城隧道为例,采用FLAC 3D有限差分软件,建立浅埋隧道三维数值模型,分析隧道围岩竖直位移(顶板下沉量)和水平位移(边墙移近量)随孔隙水压力的变化规律,获得不同孔隙水压力系数下的最大顶板下沉量和边墙移近量.并将数值模拟计算结果应用到潘城浅埋富水隧道施工中,使隧道顶板下沉量和边墙移近量均控制在规范要求的安全范围内,为潘城隧道右线施工提供了理论指导.In order to study the deformation law of surrounding rock of shallow buried tunnel under the action of pore water,taking Pancheng Tunnel in Pingliang City,Gansu Province as an example,a three-dimensional numerical model of shallow buried tunnel is established by using FLAC 3D finite difference software,and the changes of vertical displacement(roof subsidence)and horizontal displacement(side wall approach)of tunnel surrounding rock with pore water pressure are analyzed.The maximum roof subsidence and side wall movement under different pore water pressure coefficients are obtained.The numerical simulation results are applied to the construction of the shallow buried rich water tunnel in Pancheng,and the tunnel roof subsidence and side wall movement are controlled within the safety range required by the code,which provides theoretical guidance for the construction of the right line of Pancheng tunnel.

关 键 词：浅埋隧道 孔隙水压力 数值模拟 顶板下沉量 边墙移近量 

分 类 号：TU457[建筑科学—岩土工程]