顺层边坡参数反演分析及工程实践——以鄂北水资源配置工程杨楼隧洞出口左侧边坡滑坡为例

Strength parameters inversion analysis and engineering practice of consequent slope:case of left consequent slope at Yanglou tunnel exit of North Hubei Water Transfer Project

为解决在工程实施工程中遇到的顺层滑坡抗滑参数难以选取问题,以鄂北水资源配置工程杨楼隧洞出口左侧顺层边坡滑坡为例,选取了刚体滑移-拉裂模型、极限平衡理论对其进行反演分析,并对反演结果进行了筛选,得出滑面抗滑参数,并以此滑坡为实践对象,依据滑面参数采取支护措施后,经过8个月变形监测,边坡变形收敛,趋于稳定,结果表明该抗剪参数取值方法简单可操作,且取值准确、可靠,能满足工程实践需求。

Selecting sliding resistance parameters of consequent slope is difficult in engineering practice.In order to solve the problem,with the case of the left consequent slope at Yanglou tunnel exit of Water Resources Allocation Project in North Hubei and based on rigid sliding-tension model and limit equilibrium theory,inversion analysis was conducted.The inversion results were analyzed and the sliding resistance parameters was selected.Taking this landslide as the practical object,after the slope was supported by the selected parameter,based on the deformation monitoring data of 8 months,the results show that the slope deformation converged and tended to be stable.Generally the method of obtaining shear strength parameters is simple,practical,accurate and reliable,and can meet the needs of engineering practice.