【作者】 李新平； 代翼飞； 胡静；

【Author】 LI Xin-ping~(1,2),DAI Yi-fei~(1,2),HU Jing~2 (1.The Key Laboratoiy of Roadway Bridge and Structure Engineering of Hubei Province, Wuhan University of Technology,Wuhan 430070,China; 2.School of Civil Engineering and Aichitecture,Wuhan University of Technology,Wuhan 430070,China)

【机构】 武汉理工大学道路桥梁与结构工程湖北省重点实验室； 武汉理工大学土木工程与建筑学院；

【摘要】 以沪蓉西高速公路乌池坝隧道为工程背景,建立了岩溶隧道三维地质模型,分析了在流固耦合条件下隧道轴向和垂直隧道轴向方向上的隧道围岩应力特征,讨论了围岩应力与分析断面距暗河、地表岩溶洼地之间距离以及与工况之间的关系,分析了各种工况条件下隧道典型断面洞壁的位移变化情况,对隧道的涌水量进行了分析和预测.研究和分析结果可为岩溶地区隧道的围岩稳定性分析和涌水量预测提供参考和帮助.更多还原

【Abstract】 Taking Wuchiba tunnel as the engineering background,a three-dimensional geological model of tunnels in karst regions was established.Characteristics of rock stress around the tunnel in the direction of tunnel axes and vertical tunnel direction of the axes were analyzed,based on the conditions of fluid-solid coupling.Relations of the stress around the tunnel and the distance between the cross sections and the underground river,and the surface karst depressions as well as the relationship between working conditions were discussed.Displacement variation of a typical cross-section under a variety of working conditions of the tunnel wall was analyzed.Water inflow to the tunnel was analyzed and forecasted by means of the finite element method.The obtained results can provide references for the analysis of rock mass stability and prediction of water inflow of tunnels in karst zones.更多还原