人民长江2024，Vol.55Issue(8)：187-192,209,7.DOI:10.16232/j.cnki.1001-4179.2024.08.025
基于补偿水头差的沿江口门引排流量计算方法研究
Calculation method of diversion and drainage discharge through entrances of tributaries to Changjiang River based on compensated water head difference
摘要
Abstract
There are many control gates at the entrances of tributaries to the Changjiang River,which use the process of flood and ebb tide to divert and drain water by themselves.However,the complexity flow pattern makes it difficult to accurately deter-mine the process of diversion and drainage.Taking the Yanglintang estuary in the Taihu Lake Basin as an example,by analyzing the diversion and drainage scheduling methods and flow characteristics,we find that when the middle-hole gate is opened for wa-ter diversion during the flood tide,the flow pattern on the inland river side is complex and the water level near it is quite uneven;when all gates are opened for drainage during the ebb tide,the flow pattern on the outer river side is complex and the water level near is also uneven.Therefore,a calculation method for the diversion and drainage flow process of the estuary along the Changjiang River based on compensating for head difference is proposed.In this method,the water level in the weir flow formula was corrected by setting a series of compensated water head difference,and the deviation value between the calculated flow and the measured flow was counted,and then the correlation between the flow deviation value and the compensated water head difference was estab-lished.Finally,the appropriate compensated water head difference was determined,so as to establish a calculation formula suitable for the diversion and discharge process of the gates on the Changjiang River tributaries.The results showed that the error of diver-sion flow calculated by this method was reduced by 40%～50%,and the error of drainage flow was reduced by 3%～6%.Rele-vant experiences can be used as reference for engineering designers and operation and maintenance personnel of gate management units.关键词
引排水/补偿水头差/流量过程/涨落潮/太湖流域/长江Key words
diversion and drainage/compensated water head difference/flow process/flood and ebb tide/Taihu Lake Basin/Changjiang River分类
建筑与水利引用本文复制引用
张芮,李寿千,王志力,朱明成,陆彦..基于补偿水头差的沿江口门引排流量计算方法研究[J].人民长江,2024,55(8):187-192,209,7.基金项目
国家重点研发计划项目(2021YFC3001003) （2021YFC3001003）
江苏省水利科技项目(2023052) （2023052）
