渐扩式台阶泄洪道消能特性及优化研究  

A Model Experimental Study on the Gradually Expanding Stepped Spillway with High Steep Slope

作　　者：王继保[1] 陈学艳 胡寒冰 肖发新 李琦 WANG Jibao;CHEN Xueyan;HU Hanbing;XIAO Faxin;LI Qi(College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China;China Three Gorges Ecological Environment Investment Co.,Ltd.,Yichang 443000,China;Water Conservancy and Lake Bureau of Changyang Tujia Autonomous County,Yichang 443500,China;Hubei Institute of Water Resourcces Survey and Design Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]三峡生态环境投资有限公司,湖北宜昌443000 [3]长阳土家族自治县水利和湖泊局,湖北宜昌443500 [4]湖北省水利水电规划勘测设计院有限公司,武汉430070

出　　处：《三峡大学学报（自然科学版）》2024年第5期20-24,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金面上项目(52179070)。

摘　　要：台阶式泄洪道的结构设计和消能问题一直是台阶式泄洪道工程设计的重点.在实际工作中,通过物理模型试验和数值模拟的方法来进行结构形式和消能率的优化研究.本文通过物理模型试验,对长阳土家族自治县枝柘河流域防洪治理工程中的高陡坡渐扩式台阶泄洪道水力学特性进行了试验研究,并对其结构进行了优化设计.研究表明,本工程中渐扩式台阶泄洪道总体结构设计新颖合理,但存在转弯段结构设计问题.经过优化设计后,泄洪道水流流态良好,在设计工况时消能率达98%,达到预期消能目的.The structural design and energy dissipation issues of stepped spillways have always been the focus of engineering design.In practical work,physical model experiments and numerical simulations are used to optimize the structure and the energy dissipation rate.In this paper,the high steep slope gradual expansion stepped spillway in the flood control and management project of Zhizhe River Basin in Changyang Tujia Autonomous County was selected as the research object.The hydraulic characteristics of the spillway were studied through physical model experiments and the structure was optimized.The experiment showed that the overall structure design of the gradual expansion stepped spillway in this project was novel and reasonable,but there were issues with the structure design of the turning section.After optimization design,the flow state of the spillway is better,and the energy dissipation rate reached 98%under design conditions,achieving the expected energy dissipation purpose.

关 键 词：台阶式泄洪道 结构优化 模型试验 消能率 

分 类 号：TV653[水利工程—水利水电工程]