叶巴滩水电站地下厂房渗流分析影响研究

Study on the Influence of Seepage Analysis of the Underground Powerhouse of Yebatan Hydropower Station

叶巴滩水电站是一座以发电为主要任务的巨型水利水电枢纽,地下洞室群规模较大,因地下厂房多位于天然水位线以下,渗流成主要问题。叶巴滩水电站地下厂房工程地质条件和防渗措施,建立地下厂房三维整体模型,采用三维有限元分析法对渗流场进行计算。先进的计算手段和工具在工程设计中的运用可靠性,必须结合工程实际条件,不能得出正确的计算成果,并在工程实践起到技术指导作用,采取合理的工程措施,既保证工程的安全、可靠和经济性,同时避免走弯路,加快工程进度,节约工程造价,使工程效益最大化。

Yebatan Hydropower Station is a huge water conservancy and hydropower project with the main task of power generation,where has a large scale of underground cavern group.Because the underground powerhouse is mostly below the natural water level,the seepage becomes the main problem.Based on the engineering geological conditions and anti-seepage measures of the underground powerhouse of Yebatan Hydropower Station,a 3D overall model of the underground powerhouse is established,and the seepage field is calculated by the 3D finite element analysis method.The application reliability of advanced calculation means and tools in engineering design must be combined with the actual conditions of the project,so as to get the correct calculation results,and play a role of technical guidance in engineering practice.Taking reasonable engineering measures can not only to ensure the safety,reliability and economy of the project,but also to avoid detours,speed up the project progress,save the project cost and maximize the project benefit.