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Updated: Jul 14, 2025

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Design and Construction of an Urban Runoff Research Facility
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评估城市雨水系统对降雨量变化的反应和适应,使用CMIP6预测
Yutong Yao1, Jiake Li1, Yishuo Jiang1
1State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China; Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, 710048, China.
Journal of environmental management
|October 5, 2023
概括
气候变化增加了城市洪水风险,原因是较频繁的暴雨. 城市排水系统需要升级,特别是在高风险地区,以提高对未来洪水事件的抵御力.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 气候科学 气候科学
背景情况:
- 气候变化正在改变城市降雨模式,增加极端雨水事件和洪水.
- 鉴于不确定性,评估城市基础设施对气候变化影响的适应性是一项挑战.
- 高密度的城市地区面临着因降水变化造成的重大洪水风险.
研究的目的:
- 开发一种定量方法来评估城市洪水风险和排水系统的弹性.
- 分析未来的降雨变化及其对气候变化下的城市雨水的影响.
- 评估洪水风险与城市排水系统的弹性之间的关系.
主要方法:
- 利用结合模型相互比较项目第6阶段 (CMIP6) 数据用于未来降雨分析.
- 开发了一种高保真度的水力液压模型,以模拟气候变化下的城市雨水.
- 量化评估了中国州地区的洪水风险和排水系统弹性.
主要成果:
- 未来的降雨 (2023-2100年) 显示时间分布均,但大雨事件显著增加.
- 未来洪水风险较高,未来5年降雨事件的风险相当于历史10年事件的风险.
- 洪水风险与抗洪能力之间的空间相关性在0.49至0.63.3之间.
结论:
- 城市排水系统需要在高洪水风险和低弹性地区进行紧急改进.
- 在脆弱地区整合灰绿色雨水设施可以显著提高系统弹性 (0.67-0.95).
- 积极的规划对于使城市基础设施适应气候变化影响和减轻洪水风险至关重要.
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