基于InfoWorks ICM的下水道网络运营风险,根据COVID-19的NPI,具有节点流动的日间模式
Jinjun Zhou1, Yali Pang1, Hao Wang1
1Faculty of architecture, civil and transportation engineering, Beijing University of Technology, Beijing 100124, China.
Water research
|October 12, 2023
概括
针对COVID-19的非药物干预 (NPI) 增加了废水量33%,并改变了白天流量模式. 这导致北京的水位上升和污水溢出的风险.
科学领域:
- 环境工程 环境工程
- 城市水资源管理
- 公共卫生基础设施 公共卫生基础设施
背景情况:
- 非药物干预 (NPI) 被广泛用于控制COVID-19的传播.
- 这些措施限制了城市活动,并影响了污水排放特性.
- 中国人口密集的城市在污水网络中经历了重大变化.
研究的目的:
- 在COVID-19封锁之前和之后,分析北京污水网络中节点流动的日间模式.
- 评估与NPI相关的污水网络运营风险.
- 为在紧急情况下管理水利基础设施提供见解.
主要方法:
- 使用统计和数学方法分析测量到的节点流量日间模式 (周日/周末).
- 使用InfoWorks ICM进行运营风险模拟的污水网络模型的开发.
- 疫情封锁期前后数据的比较 (2022年3月至5月).
主要成果:
- 住宅区的废水量在NPI之后增加了28.76%-33.52%.
- 周日的白天流量模式从"M"到"N"峰值转移,早晨的峰值延迟.
- 超过90%的坑道显示水位上升,50%的管道达到全流量.
- 在夏季封锁日期间,污水溢出发生在4.6%-9.6%的人口洞中.
结论:
- 严格的NPI显著改变了城市废水的特性,增加了污水网络的风险.
- 观察到的变化需要在公共卫生危机期间主动规划水基础设施弹性.
- 这些发现对于在紧急情况下优化城市水资源管理策略至关重要.
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