ZHANGYong-heng,MANian,YAOJuan-juan,et al.Sediment Characteristics in Rainwater Pipe Based on SWMM and Cluster Analysis[J].China Water & Wastewater,2024,40(13):129-136.
Sediment Characteristics in Rainwater Pipe Based on SWMM and Cluster Analysis
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第13期
Page:
129-136
Column:
Date of publication:
2024-07-01
- Keywords:
- sediment in rainwater pipe; SWMM; cluster analysis; mountain city
- Abstract:
- A combination of numerical modeling and machine learning algorithms was proposed to classify rainwater pipes belonged to the drainage system of Changshou District in Chongqing, aiming to better identify siltation in mountainous cities. The study also established the correlation between each classification pipe section and the properties such as sediment thickness and particle size distribution. Utilizing the SWMM and cluster analysis method, the rainwater pipes within the research area could be categorized into 7 categories. Only categories 1, 2, and 5 with pipe diameter less than DN1 200 exhibited significant risk of silting, characterized by an average thickness exceeding 37.75 mm and a silting ratio surpassing 4.9%. This was primarily attributed to inherent characteristics of the pipe such as small pipe diameter, steep slope ratio, and sharp turning angle, leading to rapid erosion and sediment accumulation. Secondly, it was observed that the particle size distribution of sediment in rainwater pipes in mountainous cities exhibited a distinct polarization phenomenon, with majority of the particles greater than 1 mm and less than 75 μm.
Last Update:
2024-07-01