水库调度对不同降雨类型下径流的影响分析

Analysis of Reservoir Operation Impact on Runoff under Different Types of Rainfall

针对研究水库调度对径流的影响并未考虑年内降雨特性的问题，选取碧流河流域为研究对象，采用模糊聚类法对1984-2005年年降雨序列进行聚类分析，建立水库径流情势影响评价指标，研究不同时间分布类型降雨条件下水库调度对径流特性的影响。结果表明，不同降雨类型下水库调度对径流特性的影响不同，年降雨量越小、年内分布越分散、降雨过程线越平缓，其影响程度越大。

Because previous studies on the reservoir scheduling impact considered little about rainfall characteristics, this article,taking Biliuhe reservoir as an example, selects a series of evaluation index to study its impacts on the runoff under different types of rainfall. The results indicated that reservoir will bring great influence when the annual rainfall is small and dispersible.