溪洛渡水电站叠梁门取水方式减缓下泄低温水的优化调度  

IMPACT OF STOPLOG INTAKE WORKS ON RESERVOIR DISCHARGED WATER TEMPERATURE

作　　者：陈永柏[1,2] 邓云[3] 梁瑞峰[3] 

机构地区：[1]中国科学院遥感应用研究所,北京100101 [2]中国长江三峡工程开发总公司,湖北宜昌443002 [3]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610064

出　　处：《长江流域资源与环境》2010年第3期340-344,共5页Resources and Environment in the Yangtze Basin

基　　金：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

摘　　要：大型水库常采用叠梁门取水方式作为改善春季下泄低温水的有效手段,但现有的叠梁门调度方式基本为全年使用,可能加剧水库冬季下泄高温水现象,且影响到春季的水温改善效果。提出根据下游鱼类对水温的需求时段来确定叠梁门的启用时段,对金沙江下游的溪洛渡电站水库水温进行了研究,结果表明,分时段采用叠梁门取水可有限程度地提高春季的下泄水温并避免冬季下泄水高温现象的进一步加剧。同时,也研究了河流梯级开发对叠梁门应用的影响,发现水库调节性能、梯级开发、人工调度等带来的下游入库水温平坦化,以及溪洛渡水库的过渡型水温结构,使叠梁门对水温的影响显著减弱。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.

关 键 词：大型水库 梯级联合运行 低温水影响 叠梁门取水 

分 类 号：TV67[水利工程—水利水电工程]