唐家山堰塞湖泄洪问题研究  

Research on Sluicing of Tangjiashan Quake Lake

作　　者：亢宁[1] 李鹏[1] 杨森[1] 韩中庚[1] 杜剑平[1] 

机构地区：[1]解放军信息工程大学信息工程学院,河南郑州450002

出　　处：《数学的实践与认识》2009年第16期27-36,共10页Mathematics in Practice and Theory

摘　　要：对汶川地震中唐家山堰塞湖泄洪问题进行了研究.在庞杂的资料中挖掘出大量有价值的数据,综合运用漫顶溃坝水流模型和流水动力学等相关理论,针对溃口流量、扩展、溃坝水流演进等不同问题建立了相应的模型,并对各个模型进行整合,提出了针对整个过程的混合数学模型.文中对溃口变化及流量、冲刷变化等过程进行了计算机仿真,计算出了唐家山堰塞湖发生1/3溃决时下游各地的洪水水深和洪峰到达时间,可以为下游地区制定撤离方案提供有力依据.This paper discusses the sluicing problems of Tangjiashan quake lake by using the data chosen from complex reports. Based on flow mechanics theories, we build up a composite mathematical model on the flow capacity and expending problems, simulate the breaching and routing process of the floodwater, and compute the depth and arriving time of downstream flood peak if one third of the water in dam pours. According to these, a decision of how to organize people to depart can be made.

关 键 词：堰塞湖 溃坝 数学模型 仿真 

分 类 号：TV87[水利工程—水利水电工程]