紫坪铺水库后汛期限制水位分析  

Analysis of Limit Water Level in Zipingpu Reservoir during Post Flood Season

作　　者：张棚 田延平 

机构地区：[1]四川省紫坪铺开发有限责任公司,四川成都610091

出　　处：《四川水力发电》2018年第4期42-45,共4页Sichuan Hydropower

摘　　要：紫坪铺水库由于其特殊的地理位置以及承担的供水任务,运行以来蓄水期一直存在着上下游水库与紫坪铺水库争蓄的矛盾,水库蓄水难度较大。根据流域暴雨洪水特性以及对历史洪水的调查分析,确定以9月1日作为主、后汛期分界日期。经过调洪演算得知紫坪铺水库后汛期限制水位提升至875 m是可行的,为了不增加库尾河段的淹没,推荐后汛期限制水位提升至870 m。同时,通过近6年的实际运行情况说明,提高水库后汛期限制水位对于提高水库蓄满率成效显著。Because of its special geographical position and water supply purpose,since the operation of Zipingpu reservoir,there has been a contradiction between the upstream and downstream reservoirs and Zipingpu reservoir in water impounding during water storage period,so it is very difficult to impound water in the reservoir. According to the characteristics of rainstorm and flood and the investigation and analysis of historical floods,the dividing date of main flood season and post flood season was determined as September 1. It is feasible to raise the limit water level of Zipingpu Reservoir to 875 m during post flood season according to reservoir routing. In order not to increase the inundation of the reservoir end,it is recommended to increase the limit water level to 870 m during post flood season. The actual operation of the reservoir in the past six years shows that full reservoir storage rate is significantly improved by increasing the limit water level of the reservoir during post flood period.

关 键 词：紫坪铺 洪水分期 后汛期洪水 限制水位 

分 类 号：P343.3[天文地球—水文科学] TV697.13[天文地球—地球物理学]