以长江上游梯级水库群为研究对象,在分析长江上游地区水资源天然循环系统和人工取供用耗排的水资源系统的基础上,利用DHI开发的MIKE BASIN软件为平台,建立长江上游水资源配置和梯级水库群调度模拟模型,定量分析梯级水库群联合运用对径流变化的影响程度,并与实测径流数据进行对比,以此分析水利工程对径流的影响程度。研究结果表明,梯级水库群的运用,削减了汛期河道洪峰流量;水库汛末蓄水,对径流的年内过程进行了再分配,坦化了汛期流量,增大了枯季水资源量,从而使得枯季径流过程稳定均匀,有利于下游水资源开发利用和生产生活要求。 Taking the cascade reservoir in the upper reaches of the Yangtze River as the research object, based on the analysis of the natural circulation system of water resources in the upper reaches of the Yangtze River and the water resource system of artificial consumption and drainage, the MIKE BASIN software developed by DHI is used as a platform to establish the water resources allocation And cascade reservoir group scheduling model to quantitatively analyze the effect of cascade reservoir group on runoff change and compare with the measured runoff data to analyze the impact of water conservancy project on runoff. The results show that the use of cascade reservoirs reduces the flood peak discharge during the flood season; reservoirs have been impounding at the end of the flood season to redistribute the annual runoff during the flood season, to normalize the flood season flow rate and increase the dry season water resources, Dry season runoff process is stable and uniform, is conducive to the development and utilization of downstream water resources and production and living requirements.