针对高山冰川作用下流域水库汛期分期的实际问题,以玛纳斯河流域夹河子水库为研究对象，识别汛期划分的主要影响因素，选择汛期划分依据，采用定性和定量分析相结合的方式，综合成因数理统计、矢量统计、模糊分析、系统聚类4种汛期分期方法，分析各种方法适用性，提取合理成分，结合天山北坡气候带的水文气象特征和水库控制运用特点，确定汛期范围：7月10日至7月30日为前汛期， 8月1日至8月15日为后汛期。为夹河子水库的分期运行提供了理论依据。

For studying the actual problem about reservoir flood season division on the control basin influenced by high mountain glacier, and taking the Jiahezi Reservoir of Manas River basin as the object of study, the main influence factors of flood season division were discerned and regarded as the basis of division. In the qualitative and quantitative analyses, four kinds of methods such as cause analysis, vector statistics, fuzzy analysis and systematic cluster were synthesized and the applicability of them analyzed. Finally, in combination with the hydrometeorological characteristic of the north slope climatic zone of Tian Mountain and the operation of the reservoir, the flood season range are divided: 10 July 30 July flood season as main flood season and 1 August 15 August as later flood season. The result? offers a theoretical basis for the operation of Jiahezi Reservior by stages.