GUOZi-bo,ZHANGChun-yang,FANDan,et al.Waterlogging Control Scheme in Hilly Cities Based on Scenario Simulation[J].China Water & Wastewater,2025,41(11):119-129.
Waterlogging Control Scheme in Hilly Cities Based on Scenario Simulation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第11期
Page:
119-129
Column:
Date of publication:
2025-06-01
- Keywords:
- waterlogging control; hilly city; blue-green-gray facilities; resilient city; implementation scheme
- Abstract:
- In order to study the impact of blue-green-gray coupling on urban flooding and effectively improve the resilience of urban flooding, a case study was carried out on the waterlogging control system scheme of Xinshen River basin, a high-density old urban area of Xinyang City. The InfoWorks ICM model was used to couple the pipe network, topography and river channel in the study area. The implementation outcomes of five waterlogging control schemes under various dynamic scenario simulation conditions were analyzed, and the effect of blue-green-gray facilities coupling drainage on the improvement of urban flood resilience was verified. The results showed that the blue-green-gray facilities had different effects on water level, risk area, the number of overflow nodes, the length of overloaded pipeline, and water accumulation volume across different river sections. Under the condition of 24-hour design rainfall with 30-year return period, the comprehensive blue-green-gray transformation scheme could reduce the risk area by 22.00 hm2 and delay the peak time of waterlogging by 45 min, indicating significant benefits of this scheme. The risk of waterlogging in urban areas can be further effectively controlled after incorporation of relevant non-engineering measures such as resilient city construction and flood risk map management.
Last Update:
2025-06-01