MIKE21模型在精河防洪保护区避洪转移中的应用研究

Research on the Flood Evacuation in Jinghe River Flood Control Protected Area Based on MIKE 21 Model

新疆北部地区暴雨融雪混合型洪水突发性强、流速大,严重威胁下游山前平原河段防洪保护区内的人民生命财产安全。为提高避洪应急转移工作效率,将洪灾造成的人员伤亡和财产损失降到最低,以典型的山前平原河流精河为例,基于MIKE 21建立河道及防洪保护区内的整体二维水动力学模型,模拟遭遇百年一遇洪水时的风险情况,在分析防洪保护区淹没水深、流速和洪水到达时间的基础上,给出了防洪保护区内的需转移单元、可安置区域和转移人口等信息,为防汛指挥部门在实际避洪转移安置工作中提供了辅助决策支撑作用。

In northern Xinjiang,the flood mixed with rainstorm and snowmelt usually occurs with high speed,threatening people and their property at the plain reach downstream of the hill.In order to improve the efficiency in the emergency transferring work,this paper takes the plain reach of Jinghe River as a typical example to establish the MIKE21 model flood simulation model to simulate the flood and inundation information at the risk of 100 years percentage flood,providing the transferring information of the flood control protected area to the flood control commanding department in flood evacuation as the assisted decision supporting means.