基于CCTV检测的排水管道病害及原因分析  

Research on the Diseases and Causes of Drainage Pipelines Based on Closed CCTV Inspection

作　　者：龚红君 GONG Hongjun

机构地区：[1]中山翠亨能源有限公司,广东中山528400

出　　处：《重庆建筑》2024年第10期72-74,88,共4页Chongqing Architecture

摘　　要：基于污水管道CCTV检测的结果,采用数学统计的方法分析不同路况、管材和地质条件下管道缺陷的分布情况,并通过量化单位长度上的缺陷数量进行比对。结果显示,地面荷载较大的区域,HDPE双壁波纹管有较大概率发生Ⅲ级和Ⅳ级变形缺陷;HDPE双壁波纹管主要缺陷为变形、起伏,混凝土管主要缺陷为错口和起伏,HDPE双壁波纹管出现Ⅲ级和Ⅳ级缺陷的比例高于混凝土管;对于混凝土管,管道位于杂填土层时,发生缺陷的比例高于位于淤泥层。因此,在地下水位较高的区域进行管道施工时,应做好降水措施及管道基础防止管道沉降;混凝土管施工时应做好接口处处理,防止错口发生;管道基坑回填时要严格按照相关规范要求操作,同时应选择粒径均一的回填材料,避免管道发生不均匀沉降。研究不同路况、管材和地质条件下污水管道病害的分布特征,可为今后同类工程的开展提供借鉴。Based on the results of CCTV inspection of sewage pipelines,a mathematical statistical method is employed to analyze the distribution of pipeline defects under different road conditions,pipe materials,and geological conditions,with a comparison made by quantifying the number of defects per unit length.The results indicate that in areas with heavy ground loads,HDPE doublewall corrugated pipes have a higher probability of experiencing GradeⅢandⅣdeformation defects.The primary defects of HDPE double-wall corrugated pipes are deformation and undulation,while those of concrete pipes are mainly misalignment and undulation.The proportion of GradeⅢandⅣdefects in HDPE double-wall corrugated pipes is higher than that in concrete pipes.For concrete pipes,when the pipeline is located in the miscellaneous fill layer,the proportion of defects is higher than when it is located in the silt layer.Therefore,during pipeline construction in areas with high groundwater levels,dewatering measures and pipeline foundations should be properly implemented to prevent pipeline settlement.When constructing concrete pipes,the joints should be properly treated to prevent misalignment.During the backfilling of pipeline foundation pits,operations should strictly comply with relevant specifications,and uniformly sized backfill materials should be selected to avoid uneven settlement of the pipeline.Studying the distribution characteristics of sewage pipeline diseases under different road conditions,pipe materials,and geological conditions can provide a reference for the implementation of similar projects in the future.

关 键 词：HDPE双壁波纹管 混凝土管 CCTV检测 管道缺陷 缺陷等级 

分 类 号：TU992[建筑科学—市政工程]