山区河道低水头航电枢纽的水力学问题研究  

Study on hydraulic problems of low-head navigation-power junction in mountainous river

作　　者：吴文凤 张绍培 张家兴 徐红 WU Wen-feng;ZHANG Shao-pei;ZHANG Jia-xing;XU Hong(Sichuan Communications Surveying and Design Institute Co.,Ltd.,Chengdu 610017,China;Southwest Hydraulic Institute for Water Transport Engineering,Chongqing Jiaotong University,Chongqing 400016,China)

机构地区：[1]四川省交通勘察设计研究院有限公司,四川成都610017 [2]重庆交通大学,西南水运工程科学研究所,重庆400016

出　　处：《水运工程》2020年第11期106-112,共7页Port & Waterway Engineering

摘　　要：以汤坝航电枢纽为例分析山区河道上的低水头枢纽布置后在泄洪、消能和通航等方面存在的水力学问题,基于物理模型对航电枢纽布置中存在的底流消能率低、尾水渠水位壅高、通航水流条件差等水力学问题进行分析与优化改善,提出改变消力池形式及尺度、开挖整治河床、外扩隔流墙和壅水通航等措施,有效地改善了山区河道上低水头枢纽布置后的水流条件,能够保证枢纽的正常运行。This paper analyzes the hydraulic problems in discharge capacity,energy dissipation and navigation flow condition after the layout of Tangba navigation-power junction in mountainous river.Then,based on the physical model,the hydraulic problems such as the low energy-dissipation rate of bottom flow,the increase of tailrace water level and poor navigation flow condition are analyzed and optimized,and the measures such as changing the form and scale of stilling basin,excavating the riverbed,expanding the diaphragm wall and blocking water to navigation are put forward,which effectively improve the flow conditions and ensure the normal operation of the navigation-power junction.

关 键 词：山区河道 航电枢纽 低水头 水力学问题 

分 类 号：U61[交通运输工程—船舶及航道工程]