山区型河道治理中丁坝建设的影响分析  

Analysis of the Impacts of Spur Dike Construction in Mountainous Riverway Treatment

作　　者：董军[1] 

机构地区：[1]辽宁省水利水电勘测设计研究院,沈阳110006

出　　处：《水利建设与管理》2013年第7期38-41,共4页Water Conservancy Construction and Management

摘　　要：弯道水流是渠道和河道中常见的一种水流运动现象。山区型河道由于河道纵比降较大,洪峰陡起陡落,弯道水流流速较大,水流流态也较平原区弯道复杂。本文以苏子河羊祭台险工为例采用二维数学模型模拟丁坝建设前后弯道处及其上下游水流流速及流场变化,借以定性分析丁坝建设对山区型河道险工治理以及河道岸坡生态恢复的积极作用。Bend flow is a common phenomenon of water movement in channels and river course. Flow pattern in mountainous riverway is more complicated than in plain riverway because of riverway＇ s small vertical slope, ups and downs of flood peak and bend flow＇ s high flow speed. The paper takes Suzihe Yangjitai critical levee section for example to simulate the changes of the flow velocity and the velocity field in the bend of spur dike as well as its upstream and downstream by using two-dimensional numerical model. The study above can help qualitatively analyze spur dike construction＇ s positive effects on treatment of mountainous riverway＇ s critical levee section and ecological restoration of bank slope.

关 键 词：丁坝 险工 流速 流场 

分 类 号：TV91[水利工程—水利水电工程]