某水电站边坡雾雨作用下三维稳定性分析  

Three-Dimensional Stability Analysis of Fogging Precipitation Slope for Hydropower Station

作　　者：张伯涛[1,2] 荣冠[1,2] 黄凯[1] 邓云瑞[1] 钱晓慧[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]武汉大学水工岩石力学教育部重点实验室,湖北武汉430072

出　　处：《水电能源科学》2011年第6期116-119,194,共5页Water Resources and Power

基　　金：国家自然科学基金资助项目(50879063;50979081);"十一五"国家科技支撑计划基金资助重大项目(2008BAB29B01)

摘　　要：分析了金沙江某水电站坝址区工程地质条件,确定了左岸泄洪雾化区边坡的稳定性控制边界条件及潜在滑动块体,基于泄洪雾化区地形图构建了边坡三维模型,在泄洪雾化区边坡三维饱和非饱和渗流场计算的基础上考虑了非饱和孔隙水压力对结构面强度的影响,并计算了一次典型泄洪雾化降雨过程中边坡滑体的动态安全系数。计算结果表明,该方法可为雾化区边坡渗流控制和边坡加固设计提供参考。Taking the bent elbow type draft tube with six degree unilateral diffusion angle as model machine, prototype of draft tube function relationships between unilateral diffusion angle and each section shape and size is set up with similarity transformation. Then the influence of the total hydraulic losses in draft tube on improvement of energy recovery efficiency of water turbine is discussed. At the same time, the relationships among discharge, unilateral diffusion angle, energy recovery coefficient and resistance losses of draft tube is obtained. Finally, the shape size of draft tube is determined by a series of calculations.

关 键 词：三维极限平衡 边坡稳定性 降雨入渗 饱和非饱和渗流 

分 类 号：TV742[水利工程—水利水电工程] TU457[建筑科学—岩土工程]