人民长江2018，Vol.49Issue(7)：16-19,4.DOI:10.16232/j.cnki.1001-4179.2018.07.004
二维水力模拟在河流生态需水湿周法中的应用
Application of 2D hydrodynamic simulation in river ecological flow requirement by wetted perimeter method
摘要
Abstract
Wetted perimeter method is a common hydraulic method in the determination of ecological flow requirement(EFR) in rivers,which usually takes one-dimensional hydrodynamic simulation results as the calculation basis. As 2D hydrodynamic simulation can obtain the hydraulic parameters more extensively and accurately,the planar 2D hydrodynamic simulation of 13.3-km reach in downstream of a hydropower station was carried out to verify its applicability in weted perimeter method. Taking Froude number(Fr) as a division criterion of habitat classification,the centralized areas of riffle habitats was classified as the rif-fle segment in the wetted perimeter analysis. Based on the results of hydrodynamic simulation,the graphs of relative wetted perim-eter and relative flow at riffle sections were set up,and EFR of each reach was calculated by slope analysis method with curve slope one.关键词
生态需水量/湿周法/平面二维水力模拟/弗汝德数Key words
ecological flow requirement(EFR)/wetted perimeter method/planar 2D hydrodynamic simulation/Froude num-ber分类
资源环境引用本文复制引用
王庆国,王超,李克锋,邓云..二维水力模拟在河流生态需水湿周法中的应用[J].人民长江,2018,49(7):16-19,4.基金项目
国家重点研发计划项目(2016YFC0401710) （2016YFC0401710）
成都市科技惠民项目(2015-HM01-00537-SF) （2015-HM01-00537-SF）
