关键词: 汛期水位上浮, 预蓄预泄, 洪水资源利用, 溪洛渡水库, 向家坝水库

Abstract: Xiluodo-Xiangjiaba Cascade is one of the backbone projects to harness the Changjiang River and develop and utilize its water resources. However, due to the low water level operation of Xiluodu Hydropower Project in flood season and the contradiction of water impoundment demand between Xiluodu and other cascades at the end of flood season, the comprehensive benefit of Xiluodu Hydropower Project in flood season has not been fully brought into play. Through analysis on history flood data, this paper analyzes that (1)the condition of operational water level rising and the possible rising space under the premise of ensuring flood control safety of the complex project and the downstream river channel;(2) the pre-discharge operation mode of the cascade reservoirs based on hydrological forecast, which is to fully use the flood regulation capacity of the cascade reservoirs with overall coordination of regional flood control demand, project safety and Changjiang River basin. The research results can provide technical reference for the flood control safe operation and flood resources utilization of Xiluodo-Xiangjiaba cascades in flood season.

Key words: water level rising in flood season, pre-storage and pre-discharge, flood resources utilization, Xiluodo Reservoir, Xiangjiaba Reservoir