利用活动坝抬高葛洲坝近坝段枯水位的方案研究

三峡水库建成后 ,葛洲坝近坝段冲刷降低枯水水位对航运的影响是重要的问题 ,各单位曾提出了许多方案。笔者用数学模型计算的方法研究了利用活动坝提高枯水位的途径 ,研究和分析了在河道中加入活动坝后上游水位抬升的效果。提出利用活动坝抬高葛洲坝近坝段枯水水位方案的初步可行性。在对活动坝影响河道的因素简化后 ,利用一维河流数学模型计算了在葛洲坝下游胭脂坝河段不同位置设置活动坝后的水面线、流速等水流参数 ,重点比较了坝布置位置以及水流流量对水位抬升的影响 ,并以此为依据提出了葛洲坝下游抬高水位的方案

A Suggestion of Adopting Mobile Dams to Raise the Dry Season Water Level Downstream of the Gezhouba Project

The influence of the Three\|Gorges Project on the navigational water depth downstream of the Gezhouba Project in the construction period and later on is an important issue.Some institutions have set forward many solutions,including sets of submerged dikes or spur dikes,to deal with this problem.Such measures,being effective at the moment,have negative impacts on the power generation of the Gezhouba Project and flood conditions near Yichang City.This paper suggests an approach of adopting mobile dams to raise the dry season water level for navigation.With methods of numerical calculations and flume experiments,a feasible plan and preliminary layout is put forward.