摘要
透水丁坝是基于传统丁坝而创新的一种新型河工建筑物,在河道和航道整治方面效果显著。通过分析透水丁坝技术的发展现状和不足,提出一种可改变挑流角度和透水率的矩形丁坝设计方法。根据不同季节的来水条件,改变挑角及坝体的透水率,达到洪水期快速行洪、枯水期束窄河道以满足通航要求等目标,实现透水丁坝的优化布置及灵活运用;此外,由于该透水丁坝具有若干透水结构,在满足河道基本整治需要的同时,还能营造多种水流形态,有利于鱼类索饵、产卵和避难,且其结构本身也能成为其他众多水生生物的栖息地。
Permeable spur dike is a new type of river structure based on traditional spur dike,which is effective in river and waterway regulation.Based on the analysis of the development status and shortcomings of permeable spur dike technology,a design method of rectangular spur dike which can change the pick-up angle and water permeability is put forward.According to the incoming water conditions in different seasons,the pick-up angle and the water permeability of the dam are changed to achieve the goals of rapid flood discharge in flood period and narrow channel in low water season to meet navigation requirements,so as to realize the optimal layout and flexible application of permeable spur dikes.In addition,since the permeable spur dike has several permeable structures,it can not only meet the basic needs of river regulation,but also create a variety of flow patterns,which is conducive to fish bait,spawning and refuge,and its structure itself can also become a habitat for many other aquatic organisms.
出处
《科技创新与应用》
2022年第6期120-122,125,共4页
Technology Innovation and Application
关键词
透水丁坝
挑角
透水率
结构设计
permeable spur dike
angle
permeability
structural design
