中文摘要：

针对三峡水库支流库湾春季水华问题,通过建立三维水动力模型,探讨了利用调峰调度和潮汐式调度促进干支流水体交换的可行性。研究表明,当4月水库实施调峰调度时,整个库湾水体的flushing time较常规调度有所缩短,尤其是库湾上游至中上游区域;当5月水库开始实施潮汐式调度时,水体体积较大的库湾下游区域的flushing time较常规调度方案有所缩短。可见,两种水库优化调度方案对增大干支流水体交换均具有可行性。当水库实施调峰调度和潮汐式调度联合调度时,整个库湾水体的平均flushing time较常规调度方案有不同程度的缩短,表明该联合调度方案更能促进干支流水体的交换。研究成果可为支流库湾水环境问题的防治提供借鉴。

英文摘要：

For algal bloom of tributaries bay in Three Gorges Reservoir area in spring,a 3D-hydrodynamic model has been established to analyze the feasibility of the peaking dispatch scheduling and tidal scheduling to promote water exchange between the mainstream and tributary bays. The study showed that when peaking dispatch scheduling was carried out in April,the flushing time of the bay was shorter than that under regular reservoir scheduling,especially in the upstream and mid-upper areas; when the tidal scheduling was implemented in May,the flushing time in the lower bay where the water volume is larger was shorter than that under regular scheduling. So the peaking dispatch scheduling and tidal scheduling can promote the water exchange between the mainstream and tributary,namely,two scheduling schemes are feasible. The average flushing time of the bay was shorter than that under regular reservoir scheduling when peaking dispatch scheduling was combined with tidal scheduling,which could promote the water exchange of the mainstream and tributary significantly. The results can provide a reference for the water environment problem prevention and control of tributary bays.