区域洪水的数值仿真模型及应用

2-D mathematical model of basin flood and its applications

基于水文学和水动力学理论 ,研究开发了将坡面产汇流与沟、河洪水演进有机结合的一体化水文水力学模型。模型中采用区域产汇流分析、水域全区自动跟踪识别和复杂开边界过流处理等技术。模型应用于南水北调中线总干渠工程左岸邢台附近坡水区域洪水的仿真计算 ,较好地模拟了洪水期计算域的坡面汇流及沟河的洪水演进、串流状况 ,给出了洪水期任一时刻、任一区域的流场状况 (包括水位、串流、淹没时间、淹没深度及淹没面积等 ) ,为总干渠工程规划设计和沿线区域防洪规划提供了重要参考依据。

Based on 2D unsteady flow theory and hydrology theory, a 2D hydrology-hydraulical model of basin flood disaster was establised. Utilizing this model, one can obtain the water depth, velocity distribution, submerged range, duration of flood detention, and so on. The model has been well applied to the South-to-North Water Transfer Project of China, to reasonably arrange the positions and carring capacities of cross buildings.