泉水水库溃坝洪水模拟计算

Flood simulation for Quanshui Reservoir at dambreak

用部分溃坝的波流与堰流相交简化法模拟溃坝最大流量;用Preissmann四点偏心隐式差分对Saint Venant方程组进行离散,Newton Raphson方法迭代求解并推求出溃坝洪水演进过程.模拟结果大体上能反映实际情况,成果可为泉水水库及下游防洪调度提供依据.

A simplified method of wave current and weir flow intersection from experiences of several times of dambreak is used for simulation of the maximum flood discharge from the Quanshui Reservoir at dambreak. The Preissmann fourpoint eccentric implicit finite difference is used for discretization of SaintVenant equations, and the NewtonRaphson Method is used for calculation of the flood variation process at dambreak. The simulated results can reflect the actual situation, providing a basis for management of flood control of the Quanshui Reservoir and its lower reaches.