某坝肩边坡开挖优化设计方案研究

为了研究前坪水库右坝肩边坡在设计方案和优化设计方案开挖下的边坡稳定性分析,采用数值分析和极限平衡法进行研究,首先针对边坡典型剖面进行了数值分析,研究边坡的位移和应力分布规律,然后运用极限平衡法得出边坡的安全系数,两种方法结合不仅可以反映边坡的稳定性和位移场之间的关系,而且可以用工程界所熟悉的安全系数来评价边坡的稳定性。结果表明边坡开挖优化设计方案满足边坡稳定性规范要求,且优化方案减少了开挖量,节省了工程投资,使得工程尽早发挥效益。

Slope Excavation Optimization Design of a Dam

In order to analyze the slope stability of the right abutment slope of the QianPing under the design scheme and the optimization design scheme,numerical analysis and limit equilibrium method are used.Firstly the displacement and stress field of slope is analyzed by finite difference method,then the safety factor of slope is computed using the limit equilibrium method,the two methods can not only reflect the relationship between slope stability and deformation,but also be used to evaluate the slope stability by the safety factor.The results show that the optimization design of slope is stable,and the optimized scheme could reduce the excavated volume,save the project investment,and make the project bring benefits as early as possible.