某岩溶隧道围岩稳定性及涌水量预测的流固耦合分析  

Fluid-solid coupling analysis of surrounding rock mass stability and water inflow forecast of a tunnel in a karst zone

作　　者：李新平[1,2] 代翼飞[1,2] 胡静[2] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉430070 [2]武汉理工大学土木工程与建筑学院,湖北武汉430070

出　　处：《山东大学学报（工学版）》2009年第4期1-6,共6页Journal of Shandong University（Engineering Science）

基　　金：湖北省交通科技项目(鄂交科教(2005)361号);三峡库区地质灾害教育部重点实验室开放基金资助项目(2008KDZ08)

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.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 discnssed. 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.

关 键 词：高速公路 岩溶隧道 围岩稳定性 涌水量预测 流固耦合 

分 类 号：U45[建筑科学—桥梁与隧道工程]