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《Resources and Environment in the Yangtze Basin》 2010-03
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IMPACT OF STOPLOG INTAKE WORKS ON RESERVOIR DISCHARGED WATER TEMPERATURE

CHEN Yong-bo1,2,DENG Yun3,LIANG Rui-feng3(1.Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China;2.China Yangtze Three Gorges Project Development Corp,Yichang 443002;3.State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuang University,Chendu 610064)  
Stoplog intake works is often employed by large reservoir to improve discharged low temperature water in spring.However,current stoplog intake works in whole-year service may intensify the discharge of the high-temperature water in winter and even influence water temperature in spring.This paper proposed a new regulation mode for stoplog intake works according to the demanding time of downstream fish the reservoir water temperature of Xiluodu Hydropower Station of the lower Jinsha River was studied.The result showed that stoplog intake works in different period of time improved water temperature efficiently and avoided high temperature in winter.The impact of cascade development on the performance of stoplog intake works was also studied.The reservoir regulation ability,cascade combined operation and operation caused the flattening of temperature in the inflow downstream reservoir.Besides,along with the transition water temperature structure of Xiluodu hydropower station,the effect of stoplog intake works on water temperature apparently weakend.
【Fund】: 国家自然科学基金项目(50679094);; 中国长江三峡工程开发总公司科研项目(0605058)资助
【CateGory Index】: TV697.1
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