风暴和洪水模拟的海绵城市和LID缓解效益评估风暴和洪水模拟
Chaochao Li1, Yadong Zhang2, Chong Wang3
1School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, 750021, China. lichaochao@nxu.edu.cn.
Environmental science and pollution research international
|September 18, 2023
概括
使用低影响发展 (LID) 设施的海绵城市倡议有效地减少了城市的淹水. 然而,随着降雨强度和复发周期的增加,它们对洪水缓解的影响会减少,对较小,更频繁的降雨事件显示出更大的好处.
科学领域:
- 城市规划和气候适应
- 水文和水资源管理水文和水资源管理
- 环境工程环境工程
背景情况:
- 全球气候变化需要创新的城市水资源管理战略.
- 海绵城市的目标是净化,收集和重复使用雨水,减轻城市洪水.
- 评估低影响开发 (LID) 设施对于成功实施海绵城市至关重要.
研究的目的:
- 评估LID设施在减少海绵城市环境中的城市水淹没的有效性.
- 在各种降雨情景下量化LID实施的减灾效益.
- 为促进和建设海绵城市提供指导.
主要方法:
- 利用城市综合洪水建模系统 (IFMS) 进行暴雨模拟.
- 整合了LID参数,以建模城市灌的改进.
- 采用灾难损失评估方法来计算减轻效益.
主要成果:
- 在LID设施中,城市淹水面积减少.
- 随着降雨复发周期的增加,缓解效应减少.
- 在5年复发期内,最大降水率为13.63%,在50年复发期内降至11.06%.
结论:
- LID设施在减轻较小,更频繁的降雨事件造成的洪水方面更有效.
- 低水位设施对城市洪水的影响与降雨复发期相反.
- 调查结果支持在气候适应性海绵城市中战略部署LID.
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