三河口水库洪水资源利用方式研究

Utilization of Flood Resources in the Sanhekou Reservoir

针对引汉济渭工程重要调蓄枢纽三河口水库洪水资源利用实际问题开展研究,采用分形理论汛期分期方法对三河口水库汛期进行分期,并进行相应洪水资源调度模拟分析,以期充分利用三河口水库洪水资源。基于分形理论得到三河口水库的汛期分期结果为:6月1日至6月30日为前汛期,7月1日至9月30日为主汛期;在分期汛限水位基础上,基于1954年7月至2008年6月共55年的长系列径流资料,拟定了洪水资源优化调度方式,进行多元化洪水资源化调度模拟计算,结果表明:在考虑分期汛限水位后进行水库调度运行,将增加供水与发电效益,同时对下游河道生态供水满足程度有较大提高。本文结果表明分形理论可满足三河口水库洪水分期需要,可作为进行水库洪水资源利用的有效途径。

This paper focuses on the utilization of flood resources in the Sanhekou Reservoir which is an important regulating reservoir in the water diversion from Han River to Wei River.On the basis of the fractal theory,the Sanhekou Reservoir flood season can be accurate flood seasonality.The simulation of flood resources regulation is also analyzed.Based on the staged limit water level in the flood season,the considerations of flood resources regulation are projected by driving water flood resources optimization dispatch model by using long runoff series(1954-2008).The results of Sanhekou Reservoir flood season staging are as follows:the pre-flood season is from 06-01 to 06-30(i.e.1st Jun to 30th Jun)and the main flood season is from 07-01 to 09-30.The results show that by considering the limited water level by stage in reservoir operation,the water supply and power efficiency generation can be increased.At the same time,the ecological water supply in the lower reaches can be increased greatly.The fractal theory can meet the requirements of the flood staging in Sanhekou Reservoir and the results could provide an effective method for the utilization of flood resources.