Flood Forecast Project of Double Mutual Inflow Reservoir

摘要

Zhanghe reservoir is composed of Guan Yinsi reservoir and Ji Gongjian reservoir through semi — natural open channel. The characteristics of two reservoirs are greatly disparate . Because of transmitting water by open channel, reservoir level observation error and backwater storage calculation error, many flood forecast projects established did not come to applied level. This text develops the forecast project based on analyzing the characteristics of these errors and then adopts real — time adjustment technique. It basically avoids the calculating error problem, and makes the average deterministic coefficient, the qualified rate of flood peak, the qualified rate of time to peak of Zhanghe reservoir flood forecasting project comes to 91.09% , 100% and 90. 91% respectively. While the average deterministic coefficient, the qualified rate of flood peak, the qualified rate of time to peak of Guanyinsi reservoir flood forecasting project comes to 90. 63% , 100% and 100% respectively, which establishes first — rate Zhanghe reservoir flood forecast project.