Study on seepage and anti-sliding stability of powerhouse dam section and its left bank slope
Based on the seepage and anti-sliding stability of some powerhouse dam sections and the left bank slopes of Shaping Hydropower Station Ⅰ of Dadu River in Sichuan Province,this paper studies the seepage and anti-sliding stability of slopes by using finite element method and strength reduction method based on finite difference,respectively.Firstly,a three-dimensional refined model is established,and then the seepage field of the left bank slope is obtained and analysed by the finite element method.Finally,based on the finite difference software,the strength reduction method is adopted and the calculation results of the seepage field are used as the applied force to calculate and analyse the safety factor of slope anti-sliding stability under different characteristic water levels.The numerical results show that the powerhouse dam section and the left bank slope of the project meet the requirements of seepage stability and anti-sliding stability under different characteristic water level conditions,which provides a technical demonstration for the construction practice of the project.
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