一维不恒定流河网数学模型研究与应用

河道中洪水数值模拟主要用求解描述洪水波运动的圣维南方程组，依数值计算解法不同而产生了不同的模型．在海河流域大清河北支及中下游河道洪水数值模拟的实际工作中，应用了一维河网模型进行洪水的模拟计算，并根据实际情况加入了蓄滞洪区调度、泄洪闸控制调度以及近年来北方河道入渗的特点等条件，计算效果良好．现对模型的理论基础和解法以及实际应用经验作一简述。

Study and application of one-dimensional model for river network with unsteady flow

At present, S.vt equations are introduced to describe flood motion in rivers and various models are introduced based on various solutions of numerical computation. In an actual case of the numerical modeling on the flood of both the north branch and the mid-downstream of Daqing River in Haihe River basin, the flood is simulated with one-dimensional model, in which flood regulation of the retarding basin, the discharge gate control and the infiltrations of the northern rivers are considered. The result of the simulation is satisfactory, of which the theoretical basis, the solution and the experiences got from the actual application are briefly described herein.