用机器学习方法评估下水道系统的雨水流入和透情况
Yong Wang1, Biao Huang2, David Z Zhu3
1School of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China.
概括
机器学习模型,包括长期短期记忆 (LSTM),准确预测下水道流和降雨衍生的流入/透 (RDII). 这些模型在大雨期间估计RDII的性能优于传统方法.
科学领域:
- 环境工程 环境工程
- 水文学的水文学
- 水资源管理 水资源管理
背景情况:
- 准确的雨水流入/透 (RDII) 建模对于有效的下水道流量管理至关重要,特别是在大雨期间.
- 传统的方法往往难以捕捉RDII过程的复杂时间动态.
研究的目的:
- 开发和评估用于下水道流量预测和RDII估计的机器学习算法.
- 使用现场监测数据评估随机森林 (RF) 和长短期记忆 (LSTM) 模型的性能.
- 在下水道流量建模中识别和分析物理显著特征的重要性.
主要方法:
- 实现了两个机器学习算法:随机森林 (RF) 和长短期记忆 (LSTM).
- 特性工程的应用以提取相关的水文和气象变量.
- 模型的验证使用两个不同的案例研究 (组合和分离的下水道系统) 的现场监测数据.
主要成果:
- 机器学习模型在RDII估计中表现出对综合和分离下水道系统的卓越能力.
- 与RF模型和传统方法相比,LSTM模型表现出更好的性能.
- 开发的模型成功模拟了RDII的时间变化,并提高了风暴事件期间峰值流量和总RDII体积的预测准确度.
结论:
- 机器学习,特别是LSTM,为下水道流量预测和RDII估计提供了强大而准确的方法.
- 特性工程增强了这些模型的物理解释性和预测能力.
- 这些先进的建模技术在极端天气期间管理下水道系统的传统方法上提供了显著的改进.
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