摘要
论述水库建设期和运行期设计洪水、汛限水位和汛控水位的差异。采用最可能地区洪水组成法,分析计算了嘉陵江梯级水库运行期设计洪水及汛控水位。结果表明:1) 梯级水库联合调度对下游水库洪水具有一定的削减作用,草街水库运行期千年一遇的设计洪峰、3 d和7 d洪量的削减量(削减率)分别为11,457 m3/s (18%)、13.5亿m3 (12%)和11.1亿m3 (5%);2) 在保证防洪标准不变的前提下,亭子口与草街梯级水库运行期汛控水位相比汛限水位可适当抬高,分别为447 m (447.4 m)和200 m (202.3 m),汛期年均发电量分别增加了1.1%和4.8%,共增发电量1.1亿kW?h/年。
The differences between reservoir construction and operation periods,flood limited water level and flood control water level,were discussed.The most likely regional flood composition method was applied to derive and analyze design floods as well as the flood control water levels of Jialing River cascade reservoirs in operation period.Results reveal that:1)the design floods of downstream reservoirs are moderately influenced by the operation of upstream reservoirs.The 1000-year design flood peak,3 d,and 7 d flood volumes of Caojie Reservoir decrease by 11,456 m3/s(18%),1.35(12%)and 1.11 billion m3(5%),respectively;2)the flood control water levels of downstream reservoirs are slightly higher than flood limited water level with the same flood prevention standards.The flood control(limited)water levels of Tingzikou and Caojie Reservoirs in operation period are 447.4(447)and 202.3(200)m,which can increase the hydropower generation by 1.1%and 4.8%,respectively,and in total 0.11 billion KW?h annually.
出处
《水资源研究》
2019年第3期209-216,共8页
Journal of Water Resources Research
基金
国家自然科学基金(51879192)
国家重点研发计划(2018YFC1508001)资助项目
关键词
梯级水库
最可能组成
运行期
设计洪水
汛限水位
汛控水位
嘉陵江
Cascade Reservoir
Most Likely Flood Regional Composition
Operation Period
Design Flood
Flood Limited Water Level
Flood Control Water Level
Jialing River
