英那河水库防洪预报调度方案制定与分析

英那河水库不仅承担着水库上下游的防洪任务,同时作为大连市重要的水源地,其水资源利用效率对于大连市的社会经济发展极其重要,因此水库防洪调度方案的研究具有重要意义。针对英那河水库改扩建后没有适用于目前水库汛期防洪调度的方案问题,通过分析水库产流预报和退水预报的可利用性,并在此基础上,以累积净雨、入库流量和水库水位作为改变水库出库流量的判别指标,研究制定了考虑预报信息的英那河水库防洪调度方案。结果表明:考虑预报信息的英那河水库预报调度方案不仅满足水库调度原则,合理可行,而且便于操作。方案利用退水余量作为水库预泄后回蓄水量,在保证水库兴利效益,提高洪水资源利用效率的同时,还提高了水库的防洪能力。

The Analysis of Flood Forecast Operation Scheme for Yingnahe Reservoir

Yingnahe reservoir is responsible for flood control in the basin, and it is an important water source of Dalian city. Its water resources utilization efficiency is very important to the social and economic development of Dalian city. As Yingnahe reservoir does not have a flood control operation scheme yet for the flood season after its reconstruction, we formulated a flood control operation scheme based on forecasting information after we analyzed the availability of runoff production forecast and water draining forecast of the reservoir, with the accumulated net rainfall, reservoir inflow and water level as judging indexes for changing the reservoir outflow. The results showed that the flood forecasting operation scheme can basically realize reservoir regulation, and is reasonable, feasible, and easy to operate. By using the water draining margin as the water storage capacity after pre-discharge of the reservoir, the operation scheme not only ensures economical benefits, but also improves the flood resource utilization efficiency and flood control ability of the reservoir.