关键词: 入库洪水, 坝址洪水, 相关关系, 入库设计洪水, 马斯京根演算法, 丹江口水库

Abstract: Taking Danjiangkou Reservoir on the Hanjiang River Basin as the research object, flow superposition method, water balance method, and Massingen algorithm were used to calculate the inflow flood and dam-site flood according to the flood data before and after the reservoir construction. The relationship of the inflow flood and dam-site flood were established in terms of peak flood flow and flood volumes of different duration. The differences of designed inflow floods derived from different methods were studied. The research results showed that the relationship between inflow flood and dam-site flood of Danjiangkou reservoir can be described by a linear relation approximately, that the indicators of flood volumes of different durations have a higher correlation compared with the peak flood flow. As the time duration increases, the flood volume of the inflow flood and dam-site flood tend to be close. In calculating the design inflow flood by the typical year method, the deduced results of flood peak flow and flood volumes of short duration by different typical years are quite different. The design inflow flood results deducted by the relationship between inflow flood and dam-site flood represent a average condition. The research results can provide reference for flood control operation of Danjiangkou reservoir.

Key words: inflow flood, dam-site flood, correlation, design inflow flood, Muskingum Model, Danjiangkou Reservoir