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Updated: Jun 14, 2025

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Watershed Planning within a Quantitative Scenario Analysis Framework
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在不同城市化密度的气候变化下,评估使用合成降雨的低影响性发展战略
Manchikatla Sagar Kumar1, N V Umamahesh2
1Department of Civil Engineering, National Institute of Technology, Warangal, India
概括
海德拉巴的城市洪水因气候变化而恶化. 实施低影响性发展 (LID) 战略可以显著减少洪水流量,提高城市的抗灾能力.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 水文学的水文学
背景情况:
- 城市洪水是一个日益严重的全球性问题,由气候变化和快速城市化加剧.
- 印度海德拉巴因其特殊的城市发展模式而面临重大洪水风险.
- 评估洪水动态对于有效的城市水资源管理至关重要.
研究的目的:
- 在未来的气候和土地使用场景下,模拟海德拉巴的城市洪水动态.
- 评估低影响性发展 (LID) 战略在缓解城市洪水方面的有效性.
- 提出数据驱动的管理策略,以提高城市地区的抗洪能力.
主要方法:
- 使用了PCSWMM洪水建模框架.
- 综合合成降雨数据来自强度-持续-频率 (IDF) 曲线和马尔科夫链方法.
- 基于关键采集区优先级和开放空间可用性的应用LID策略.
主要成果:
- 在极端1-10天事件期间,LID的实施导致最大流量大幅减少:在区域IV和V中减少8-16.41%,在区域XII中减少3.57-12.4%.
- 较小的减少 (0.59-5.58%和0.24-0.45%) 观察到2年,5年和10年回归期的合成降雨事件.
- 优先考虑的水域和开放空间有效指导了LID战略的实施.
结论:
- 低影响开发 (LID) 是一个高度有效的策略,用于减轻城市洪水的影响在海德拉巴.
- 加强LID基础设施对于提高城市抗洪能力至关重要.
- 建议采用多方面的方法,包括各种LID类型,以最大限度地减少洪水损害.
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