天津市典型片区雨水管道沉积物状况调查研究  

Investigation and study on sediment status of rainwater pipelines in typical urban areas of Tianjin

作　　者：周志华[1] 董祯 张彤宇[1] ZHOU Zhihua;DONG Zhen;ZHANG Tongyu(Tianjin Water Conservancy Research Institute,Tianjin300061,China)

机构地区：[1]天津市水利科学研究院,天津300061

出　　处：《水科学与工程技术》2024年第6期34-37,共4页Water Sciences and Engineering Technology

摘　　要：通过开展雨水管道本底调查,利用声呐成像仪进行管道淤泥深度勘测,掌握了天津中心城区7个片区40条雨水管道沉积物淤积状况。结果表明:区域雨水管道沉积物普遍存在,管段中沉积物平均淤深58.1~647.3 mm,管段的最大淤积系数均值43.5%;建筑工地、菜市场及老旧居民小区附近管道淤积情况较为严重,商务区、学校、新建居民小区附近管道淤积情况相对较轻;采用公式法,按照管段最大淤积系数均值43.5%计算,相应过流能力减小52.6%。调查分析结果可为城市雨水管道清淤改造、地表水体污染控制等提供参考。By conducting a background investigation of rainwater pipelines and using sonar imaging devices to conduct depth surveys of pipeline sludge,the sedimentation status of 40 rainwater pipelines in 7 areas of the central urban area of Tianjin was mastered.The results show that:sediment is commonly present in regional rainwater pipelines,with an average sedimentation depth of 58.1~647.3 mm and a maximum sedimentation coefficient of 43.5%;The siltation of pipelines near construction sites,vegetable markets,and old residential areas is relatively severe,while the siltation of pipelines near business districts,schools,and new residential areas is relatively mild;Using the formula method,calculated based on the average SCPS coefficient of the maximum pipeline section,which is 43.5%,the corresponding flow capacity is reduced by 52.6%.The investigation and analysis results can provide reference basis for management work such as dredging and renovation of urban rainwater pipelines,and control of surface water pollution.

关 键 词：沉积物 声呐成像仪 管段淤积系数 粒径分布 过流能力 

分 类 号：TU992[建筑科学—市政工程]