大藤峡水利枢纽工程泄洪消能建筑物研究与设计  

Research and Design of Flood Discharge and Energy Dissipation Structures of Datengxia Hydro Project

作　　者：谭志军[1] 潘明鸿 TAN Zhijun;PAN Minghong(China Water Northeastern Investigation,Design and Research Co.,Ltd.,Changchun 130021,China;Guangxi Datengxia Gorge Water Conservancy Development Co.,Ltd.,Nanning 530200,China)

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021 [2]广西大藤峡水利枢纽开发有限责任公司,广西南宁530200

出　　处：《人民珠江》2022年第5期9-14,共6页Pearl River

摘　　要：泄洪消能建筑物设计是水利枢纽布置首要研究问题,泄洪消能建筑物设计非常重要,涉及到泄流能力、过流面空化、水流掺气、泥沙磨蚀及对其下游河床冲刷等问题。针对大藤峡水利枢纽工程泄洪建筑物最大泄量达66200 m^(3)/s和消能建筑物弗劳德数低的难题,泄洪建筑物采用了底孔泄洪、表孔排漂的泄洪方案,消能建筑物采用了二级消力池底流消能方式。泄水闸主要采用底孔泄洪,弧门推力巨大,选用钢梁作为弧门支撑体,解决了工程设计难点,为同类工程提供借鉴作用。The design of flood discharge and energy dissipation structures is important and is the primary research problem in the layout of hydro projects,which involves the problems of discharge capacity,cavitation of flow surface,water aeration,and sediment abrasion and scouring of downstream riverbeds.For the Datengxia hydro project,its maximum discharge capacity of flood discharge structures reaches 66,200 m^(3)/s,and the Froude number of energy dissipation structures is low.Therefore,the scheme of bottom outlets for flood discharge and surface outlets for drift discharge is adopted for flood discharge structures,and the underflow energy dissipation mode of the secondary stilling basin is adopted for energy dissipation structures.As flood discharge structures mainly adopt the bottom outlets for flood discharge,and the radial gate bears huge water thrust,the steel beam is selected as the radial gate support,which solves the difficulties in engineering design and provides a reference for similar projects.

关 键 词：水利枢纽 泄洪建筑物 消能建筑物 弧门支撑体 

分 类 号：TV653[水利工程—水利水电工程]