岷江下游航电梯级生态流量协同造峰调度研究

发布时间：2018-04-17 15:57

本文选题：珍惜鱼类保护 + 生态流量　；参考：《人民长江》2017年20期

【摘要】：岷江下游4个水电梯级的开发将对最下游梯级水电站(龙溪口)坝址下长江上游珍稀、特有鱼类国家级自然保护区内的重点保护鱼类产卵、繁殖关键生命周期的洪峰流量过程产生影响。因此,有必要开展梯级电站生态流量联合调度研究。研究认为,在鱼类产卵高峰期的7~8月,梯级电站可分预泄-敞泄-回蓄3个阶段实施造峰调度,老木孔,东岗岩,犍为和龙溪4个梯级同步敞泄,保证洪峰顺利通过各梯级,维持下游天然水文过程;洪水过后,采取专门的调度措施回蓄,延长回蓄时间,保证退水过程与天然洪峰保持基本一致,避免造成下游减脱水过程。研究方案的实施可为下游长江珍稀特有鱼类提供类似天然的水文过程,减轻水电梯级开发对鱼类产卵的影响。
[Abstract]:The development of four hydropower cascades in the lower reaches of the Minjiang River will protect the spawning of the most downstream cascaded hydropower stations (Longxikou), which are rare and rare in the upper reaches of the Yangtze River.The reproduction of the critical life cycle of Hong Feng flow process has an impact.Therefore, it is necessary to carry out research on ecological flow joint dispatch of cascade power stations.The study shows that during the peak period of fish spawning from July to August, the cascade power stations can be divided into three stages of pre-discharge, open-release and re-storage to carry out peak building dispatching. The four cascades of Laogong, Donggang, Qianwei and Longxi are simultaneously opened to ensure the smooth passage of Hong Feng through each step.After flood, special regulation measures should be taken to restore the water and prolong the storage time to ensure that the process of water recuperation is basically consistent with that of natural Hong Feng, and to avoid the process of reducing dehydration downstream.The implementation of the research scheme can provide a similar natural hydrological process for the rare and endemic fish in the lower Yangtze River and reduce the impact of hydropower cascade development on the spawning of fish.
【作者单位】：中国电建集团贵阳勘测设计研究院有限公司;
【分类号】：TV737

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