双曲拱坝坝顶表孔泄洪消能布置试验研究  

Experimental Research on Crest Spillway Flood Energy Dissipation for the Double-curvature Arch Dam

作　　者：槐文信[1] 曾玉红[1] 李海涛[2] 黄力勤 

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]湖北省水利水电勘测设计院,湖北武汉430071 [3]郁江流域水电有限责任公司,湖北利川445400

出　　处：《四川大学学报（工程科学版）》2007年第1期1-5,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金委员会;二滩水电开发有限责任公司雅砻江水电开发联合研究基金资助项目(50539060)

摘　　要：为了解决某水电站碾压混凝土双曲拱坝的泄洪消能与下游冲刷问题,采用1∶60的水工整体模型对其泄洪消能布置进行了深入的试验研究,通过方案优选,最终确定中孔采用滑雪道式溢洪道,两边孔采用新型折流器实现了高低坎水流碰撞消能、横向扩散碰撞消能;最大限度地增加了落水面积,充分利用下游河道水体消能,使冲刷深度由原来的30 m左右减至18 m以内,从而较好地解决了该坝的消能冲刷问题。该试验提出的布置方式和消能工可供类似工程参考。The flood releasing energy dissipation facility and scouring depth of a RCC double curvature arch dam with 98m in max height and a 3-surface bay spillway is experimentally studied. The scale of the hydraulic model is 1： 60. The ski-jump spillway and a new type dissipater are adopted to bring about energy dissipation by impact of low and high sill flows and impact of lateral diffusion. In addition, by increasing the falling area as large as possible and making full use of the down stream water depth, the scouring depth is reduced from the original 30 m to less than 18 m, then the problem of scouring and energy dissipation is solved. The arrangement and dissipater proposed in the model test can also provide reference for similar projects.

关 键 词：双曲拱坝 模型试验 滑雪道式溢洪道 消能 冲刷深度 

分 类 号：TV131.61[水利工程—水力学及河流动力学]