基于河道汇流单位线原理，提出了解决河道洪水反向演算的断面流量相关法。
The instability of Muskingum routing method used in the flood inverse routing in river channel was proved by using difference solution of motion wave equation.
以所得宽度函数为基础，考虑水动力参数的空间变化，构建了基于宽度函数的地貌瞬时单位线，用于实际流域的汇流计算，取得了较好的计算结果。
The GIUH based on the width function considering the spatial changes of hydrodynamic parameters is built, by which the results of flood routing of watershed are satisfactory.
重点是对流域产流模型结构建立的理论基础分析，流域汇流的单位线方法和流域的实际物理特性和水流运动的内部机制之间的对应关系的分析。
Theoretical basis to construct the models of runoff yield and runoff is explored. Runoff unit hand method corresponding to physical characters and water flow mechanism is studied.
重点是对流域产流模型结构建立的理论基础分析，流域汇流的单位线方法和流域的实际物理特性和水流运动的内部机制之间的对应关系的分析。
Theoretical basis to construct the models of runoff yield and runoff is explored. Runoff unit hand method corresponding to physical characters and water flow mechanism is studied.
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