蓄滞洪区洪水演进过程数值模拟及洪灾损失分析  

Numerical Simulation of Flood Routing in the Flood Retarding Basin and Flood Loss Analysis

作　　者：肖玉红[1] 李大鸣[2] 白玲[2] 班军[2] 

机构地区：[1]西藏农牧学院水利土木工程学院,西藏林芝860000 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《中国农村水利水电》2012年第12期143-147,149,共6页China Rural Water and Hydropower

基　　金：西藏自治区创新人才培养改革试点专业资助项目

摘　　要：以二维非恒定流基本控制方程为理论基础,采用有限体积法建立洪水演进数学模型。根据蓄滞洪区内不同地形条件及洪水调度方案,以相应的水动力学方法,对模型区域的通量、蓄水量和洪水实时淹没水位进行计算,并考虑了公路建设中路基体积、涵洞尺度、取土方量对蓄滞洪区洪水演进的影响。采用小清河蓄滞洪区的历史洪水淹没资料进行模型验证,模拟了自然滞洪和分区滞洪两种情况下的洪水淹没过程,模拟结果与历史统计淹没范围基本吻合,为蓄滞洪区中的工程建设和防洪影响评价提供了研究思路和方法。A flood routing model is established by using the finite volume method, based on the two-dimensional unsteady flow equa- tions. Numerical flux, impoundage and flood level are calculated hydrodynamically, according to different terrain conditions and flood dispatching schemes, and effects of the subgrade volume, culvert size, earthwork volume are also considered here. The model is firstly verified by the historical flood data of Xiaoqing River flood retarding basin, then it is used to simulate flood processes of natural flood storage and partition flood storage. The simulated results are basically consistent with historical records. This research serves as a proper research method for engineering construction and flood impact assessment.

关 键 词：滞洪区 小清河 洪水演进数学模拟 洪灾损失预测 

分 类 号：TV122[水利工程—水文学及水资源]