挑跌流护底或不护底水垫塘控制标准研究  

Study on control criteria for plunge pool of water-cushion

作　　者：王继敏[1] 郭航忠[1] 崔广涛[1] 彭新民[1] 杨敏[1] 

机构地区：[1]天津大学水利水电工程系,天津300072

出　　处：《水力发电学报》2008年第1期64-68,73,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(50779044)

摘　　要：本文使用锦屏一级、溪洛渡、糯扎渡三个大型工程的水垫塘1∶100水弹性块体模拟底板的水工模型研究了块体失稳条件。并采用专门设计的测试块体承受脉动上举力装置,测试了块体具有一定抗力条件的受力过程。进行了回归分析,给出了一定抗力条件下的安全水深,或一定水深条件下所需抗力(板重力和加锚固)大小的公式。本文对护底或护坡不护底的水垫塘塘底破坏性分析都有参考意义。The destabilization conditions of apron slabs in plunge pool are studied by making use of hydraulic models with a scale of 1 ： 100 of hydropower stations Jinping I , Xiluodu and Nuozhadu. The loads on slabs with certain resisting force are measured by a special instrument. The regression analysis is carried out. The formula for the safety depth of water-cushion under certain resisting force or the resisting force needed under certain depth of water-cushion is given. This research has significant reference for failure analysis on plunge pool with apron slabs in the bottom or that with apron slabs on the slope.

关 键 词：水工结构 水垫塘 底板稳定 扩坡不护底 安全水深 

分 类 号：TV135.2[水利工程—水力学及河流动力学]