反拱水垫塘在拉西瓦特高拱坝枢纽中的应用及研究成果综述  

Summary of application and study results of invert plunge pool in construction of Laxiwa extra-high arch dam

作　　者：姚栓喜[1] 王亚娥[1] 杜生宗[1] 张友科[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院,西安710065

出　　处：《西北水电》2010年第1期23-27,共5页Northwest Hydropower

摘　　要：为了实现反拱水垫塘在高水头、窄河谷、高地应力和水垫塘长度受限制条件下的应用,采用各种物理模型试验、结构仿真计算和流行元超载能力分析等多种研究方法,解决了反拱水垫塘适应条件、作用荷载、工作机理、稳定机理、破坏机理、承载能力、成拱条件、体型结构和构造等关键技术问题,实现了反拱水垫塘在拉西瓦250 m特高拱坝中的应用。连续运行半年,监测结果表明反拱水垫塘运行正常,满足设计要求。In order to use invert plunge pool under conditions of high water head, narrow valley, high geostatic stress and restricted plunge pool length, study methods such as physical model tests, structural simulation calculation, numerical manifold method, etc. have been adopted, which solved the key technical issues such as applicability of invert plunge pool, its action load, operating mechanism, stability mechanism, failure mechanism, bearing capacity, arch forming conditions, outline structure and formation. Thus application of invert plunge pool in construction of the Laxiwa extra-high arch dam of 250m is realized. Monitoring results show that the invert plunge pool has been operating normally throughout half year continuous operation and satisfied the design requirements.

关 键 词：拉西瓦水电站 反拱水垫塘 冲击动水压力 结构稳定 承载能力 

分 类 号：TV653[水利工程—水利水电工程]