Applied research on the improved Great Lakes Calculus Model used in the flood control scheduling of the middle and lower Yangtze river

摘要

This paper used the measured data of water level and flow on the cross-sections of middle and lower Yangtze River during flood season (May-September) from 1981 to 2015. According to the evolution of the state of river course, flood and sediment, we calculated the flood routing with the improved Great Lakes flood routing model on the sections of Yichang to Shashi, Shashi to Chenglingji, Chenglingji to Hankou, Hankou to Hukou. And the results of the calculation was checked with the measured data in 1983, 1998,2002 and 2015, to verify the relationship between river and lake and the relevant parameters, and to provide detailed, accurate information for the subsequent models. The calculation results showed that the research was practical, and can be used as the basis of decision.