深圳市某片区排水管道CCTV检测评估与修复方案

以深圳市某片区排水管道CCTV检测评估工程为例,分析了管道检测及评估结果,并提出管道修复方案。结果表明,本工程所检测的管道总长度为74.2km,整体上缺陷情况严重,管道结构性缺陷共3942处,其中三级、四级缺陷共754处,主要结构性缺陷为渗漏、脱节、错口;管道功能性缺陷共245处,其中三级、四级缺陷共62处,主要功能性缺陷为沉积、障碍物。本工程综合考虑技术、成本等因素,提出管道结构性缺陷根据缺陷参数F、缺陷密度SM及修复指数选择非开挖修复方案,管道功能性缺陷根据缺陷参数G及养护指数确定养护方案。

The detection and evaluation by CCTV and rehabilitation analysis of sewer pipeline in an area of Shenzhen City

Taking the trenchless detection project of sewer pipeline in an area of Shenzhen City as an example,the results of C CTV inspection and condition evaluation were introduced. Some suggestions were put forward for the treatment of pipelines. A total of 74. 2 km pipeline were de tected. Through the analysis we can realize that the structure and function of these sewer pipeline were severely damaged. The amount of structural defects were 3 942, and the defects of the third and forth degrees were 754. The main structural defects were leakage, disjunction and mismatch. The amount of functional defects was 245, including 62 of the third and forth degrees. The main functional defects were deposition and obstruction. For the pipeline with structural defects,the trenchless rehabilitation plan were made depend on defect parameters F, defect density S m and re pair index RJ. For the pipeline with functional defects, the maintenance plan were based on defect parameters G and maintenance index MI.