长江上游流域水文条件变化下的三峡水库综合运用

Comprehensive utilization of Three Gorges Reservoir under hydrological condition change of upper Yangtze River Basin

近些年长江上游流域干支流水文条件发生了较大变化,上下游航运、下游供水保障、泥沙减淤、生态调度以及库区地质灾害治理也对三峡水库综合利用提出更高要求。在总结试验蓄水期以来三峡水库综合运用调度实践的基础上,针对新形势下各种调度约束和需求,提出了三峡水库优化水库蓄水和消落进程、加强实施汛期中小洪水优化调度,以及多库联合调度等改进建议,对保障三峡水库综合效益的发挥具有十分重要的意义。

In recent years,the hydrological conditions of the main and branch streams are largely changed,meanwhile,the higher requirements from the upstream and downstream navigations,the downstream water supply guarantee,the desiltation and sedimentation reduction,the eco-operation and geological disaster control within the reservoir area are put forward on the comprehensive utilization of the reservoir. On the basis of summarization of the practice of the comprehensive utlization and operation of Three Gorges Reservoir since its pilot impoundment,some improvement suggestions of optimization of the reservoir impoundment and water level fluctuation process,strengthening the optimal dispatching of medium and small flood during flood season as well as the joint-operation of multi-reservoirs,etc. are proposed,which have important significances for bringing the comprehensive benefit of the reservoir into full play.