HUANGRong-min,DUYu,ZHANGHao,et al.Influencing Factors of Drainage Pipeline Health Based on Risk Index Method[J].China Water & Wastewater,2023,39(9):65-71.
基于风险指数法的排水管道健康状况影响因素研究
- Title:
- Influencing Factors of Drainage Pipeline Health Based on Risk Index Method
- 摘要:
- 为了建立高效率和高可信度的排水管道状况预测模型，需要确定国内排水管道健康状况影响因素。为此，提出了一种基于风险指数的描述性统计方法，并采用该方法研究了我国W市滨江排水区和城东排水区中排水管道属性与结构、功能以及健康状况的相关关系，其中管道属性包括管道类型、直径、长度、材料和位置。结果表明，同一城市内两排水片区管道属性与健康状况的关系稍有不同，但总体趋势相似：管道类型与健康状况呈现相关性，两区雨水管道的结构状况优于污水管道，而污水管道的功能状况优于雨水管道；直径越小的排水管道出现结构和功能缺陷的风险越高；长度为25~35 m的排水管道拥有最好的健康状况；钢筋混凝土类管道的结构性能更好，塑料类管道的功能性损失较小；垂直于行车道敷设的排水管道健康状况较差。
- Abstract:
- To establish an efficient and reliable model for predicting the condition of drainage pipes, it is necessary to determine the factors affecting the healthy condition of drainage pipes in China. This paper proposed a descriptive statistical method based on risk index to investigate the relationship between the attributes of drainage pipe and the structural, functional and healthy status of drainage pipe in two drainage areas of W city (Binjiang drainage area and Chengdong drainage area). The attributes of drainage pipe included the type, diameter, length, material and position. The relationship between pipeline attributes and health status in the two drainage areas of W city was slightly different, but the general trend was the same. There was a correlation between the type and the healthy status of pipe. The structural status of stormwater pipe was better than that of sewage pipe, and the functional status of sewage pipe was better than that of stormwater pipe. The drainage pipe with a smaller diameter had a higher risk of structural and functional defects. The pipelines with the length between 25 m to 35 m had the best healthy condition. The structural performance of reinforced concrete pipe was better, while the functional loss of plastic pipe was less. The health of drainage pipes perpendicular to the carriageway was poor.
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