摘要
在汛限水位静态控制的运行方式下常导致水库汛期不敢蓄水,汛后库水位却常常达不到正常蓄水位,极大地限制了水库兴利效益,造成水资源浪费。以石门水库为例,针对其静态汛限水位运行的现状,分析该运行方式下对水库兴利效益的影响,提出采用汛限水位动态控制的方法来提高水资源利用率。实际调度中,结合石门水库天气、水文等预报信息,采用预蓄预泄方法,分析汛限水位动态控制的上下限,给出了动态控制的调度策略,并以"20110728"洪水对比了两种调度方式。结果表明:当预报降雨或洪水偏小时,可抬高汛限水位最高至617.5 m,拦蓄洪尾,有效增加水库的蓄水量;当预报降雨或洪水偏大时,可降低汛限水位最低至610.0 m,腾空库容,迎接洪水。
The reservoir always can＇t achieve its normal level for it is not allowed to store water in flood season when its limited water level is under static control.This operation will reduce the reservoir＆#39;s benefit largely, and waste lots of water resource.This article takes Shimen reservoir as example, through summarizing the present situation of the static operation of limited water level, influence on the benefit of the reservoir is analyzed following this method, and dynamic control of flood limited water level is put forward to improve water use efficiency.In the actual dispatching, the upper and lower limits of the dynamic control of the flood limit are analyzed by using the pre-storage and pre-discharge method according to its hydrological and weather forecast information, and the dynamic control scheduling strategy is given.Comparing two different dispatching modes by “20110728”l flood process, the results show that when the precipitation or flood forecast is light, flood control level can be raised to 617.5m mostly to enlarge the reservoir＆#39;s storage;then if the forecast is heavy, flood control level will be lowered to 610.0m to empty reservoir to keep its safety.
出处
《水资源与水工程学报》
CSCD
2017年第3期146-150,157,共6页
Journal of Water Resources and Water Engineering
基金
陕西省水利厅科技计划项目(2014slkj-16)
国家自然科学基金项目(51409207
51609200)
关键词
汛限水位
动态控制
控制域
调度方法
主汛期
石门水库
flood control level
dynamic control
control field
dispatching mode
the main flood season
Shimen reservoir
