缺资料地区小型水库纳雨能力计算模型构建及应用
Construction and application of rainfall retaining capacity calculation model of small reservoirs in ungauged region
童冰星 1张潇 1张俊 1李洁 1江冬青 2吕坤2
作者信息
- 1. 长江水利委员会 水文局,湖北 武汉 430010;长江水利委员会水旱灾害防御创新团队,湖北 武汉 430010;流域水模拟与预报调度智能技术创新中心,湖北 武汉 430010
- 2. 湖南省水文水资源勘测中心,湖南长沙 410000
- 折叠
摘要
针对缺资料地区小型水库预警难题,构建了考虑不同小水库运行方式的纳雨能力计算模型,并提出适用于缺资料地区的模型参数方案,开发考虑未来降雨的纳雨能力迭代试算方法.以2023 年8 月21 日为起始时刻,计算湖南省缺资料地区32 座试点小型水库的纳雨能力,并以和平水库为例开展纳雨能力滚动计算.结果表明:计算得到的试点小型水库防洪风险与降雨分布合理相关,能够直观展现降雨主落区内的高风险水库分布,实现了库水位和前期降雨对于纳雨能力影响的合理量化,并且能够实时反映不同时期影响纳雨能力的主要因素的动态变化.
Abstract
To realize the flood risk warning of small reservoirs in ungauged regions,a rainfall retaining capacity calculation mod-el considering different operation modes of small reservoirs and the model parameter schemes have been developed in this study.An iterative trial solution method considering potential rainfall for the constructed model has been proposed for efficient computa-tion.The rainfall retaining capacity of 32 pilot small reservoirs located in the ungauged region of Hu'nan Province was calculated starting from August 21,2023.In addition,a continuous calculation was carried out from August 1 to September 30,2023,using the proposed method for Heping Reservoir.The results show that the flood risk of the pilot small reservoirs calculated is reasonably related to the rainfall distribution,supporting flood risk visualization for small reservoirs within the rain-affected region.Further-more,the impact of reservoir water level and antecedent precipitation on rainfall retaining capacity can also be dynamically quanti-fied in real-time,which provides a reference for the continuous monitoring of flood risks of small reservoirs.
关键词
小型水库/纳雨能力/前期影响雨量/迭代试算/缺资料地区/湖南省Key words
small reservoirs/rainfall retaining capacity/antecedent precipitation/iterative trial calculations/ungauged re-gion/Hunan Province引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据