摘要
为了给防汛指挥机关进行有计划撤离提供科学依据,探讨了溃坝洪水演进规律.针对山区水库地形的复杂性,建立一种溃坝洪水模拟的一维、二维耦合模型,采用交错网格、线性递推、交替隐格式求解.运用此模型对某水库溃坝洪水进行模拟,对溃坝洪水向下游推进过程、以及洪水漫堤后向下游城镇的演进过程进行水动力学模拟,得出水位和流速的沿程分布,实现水流的快速预报.此模型对山区水库的溃坝洪水模拟具有很强的实用性.
The rules of dam-bursting flood is studied, for providing the scientific basis to the authorities for withdrawing scheduledly from flood threating areas. Considering the complex terrain of mountainous reservoir,a coupling model combining one-dimension and two-dimension is constructed to simulate the floods. Staggered grid, the linear recurrence, and alternating implicit scheme, are used to solve it. This model is employed to simulate the release of dam bursting flood of some reservoir, water dynamics simulates the progress of the dam-bursting flood pushing to the downstream and the flood pushing to cities and towns at the downstream after flowing over the dam, the distributions of water level and current velocity along the rang are got,the water flow is quickly predicted. This model has a powerful application for simulating the dam-bursting flood of mountainous reservoirs.
出处
《华北水利水电学院学报》
2008年第4期25-28,共4页
North China Institute of Water Conservancy and Hydroelectric Power
基金
山西省科技攻关项目(2007031105-2)
关键词
洪水
一维
二维耦合模拟
交替方向
交错网格
隐格式
flood
one-dimension and two-dimension coupling simulation
alternating direction
staggered grid
implicit scheme
