| 摘要: |
| 洪涝风险图的编制,是洪涝平原管理中的一项重要内容,对洪涝平原生产布局和人类经济活动具有指导作用。本文介绍了一种洪涝风险图的编制方法。首先概化平原内河网,用明渠一维非恒定流模拟水流运动,得到各地的水位和流量,比较水位和数学地形模型(DEM)的高程,将水位高过DEM的地方划为洪涝危险区。本文以太湖流域湖西区为例作出洪涝风险图,并且介绍了洪涝风险图在国民经济部门的应用。 |
| 关键词: 洪涝风险 地图编制 太湖湖西区 |
| DOI：10.18307/1995.0207 |
| 分类号: |
| 基金项目: |
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| Compilation and application of flood risk map——a case study in west Taihu Lake region |
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Gao Junfeng, Sun Shuncai
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Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008
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| Abstract: |
| The flood risk map compilation is one of the key assignments In flood plain management. A compiling, method of flood risk map and its applications are introduced in this paper. The compiling procedures are as follows:1. to generalize river networks in the plain so as to simulate natural river conditions; 2. to calculate water stage and discharge by using 1-D unsteady open channel flow numerical computation; 3. to compare water stage with DEM (Digital Elevation Model); 4. to delimit the regions where the elevations are lower than water stage as flood risk regions. The flood risk map can be applied to:1. analysis of flood status; 2. evaluation of losses of flood disaster; 3. determination of land price and disaster insurance investment in flood risk regions; 4. policy-maker assistance in hazard mitigation and prevention; 5. distribution of industry, agriculture and residential settlement; 6. special map applications. |
| Key words: Flood risk map compilation the west Taihu Lake |
