LIWen-tao,WANGGuang-hua,ZHOUJian-hua,et al.Discussion on the Compilation of Static Flood Risk Map in Guangzhou[J].China Water & Wastewater,2023,39(3):104-108.
Discussion on the Compilation of Static Flood Risk Map in Guangzhou
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第3期
Page:
104-108
Column:
Date of publication:
2023-02-01
- Keywords:
- flood risk map; basin; drainage area; water account; hydraulic model
- Abstract:
- In order to improve the flood prevention ability of Guangzhou, for the first time, a two-dimensional hydrodynamic model was built with the basin and drainage area as the unit. The “water account” of the basin was calculated, the causes of flood were simulated and analyzed, and a static flood risk map of 105 drainage areas of 9 major basins in Guangzhou was prepared. The flood risk map can directly reflect the location and spatial distribution of water-logging or flood inundation in history, and control the scope and depth of flood inundation in advance. The key information, such as submergence time, is of great value in understanding the base number of potential flood hazards in Guangzhou. It can provide important support for the urban flood prevention work by formulating scientific and effective plans for preventing excessive floods, improving the scientificness of flood avoidance transfer, distribution and dispatching of flood prevention and emergency materials.
Last Update:
2023-02-01