D B 11北 京 市地 方 标准Technical specificationfor inspection of municipaldrainage sewers言...................................................................................ii1范围.....................................................................................i2规范性引用文件..........................................................................13术语和定义..............................................................................14基本规定................................................................................ 35外部巡视................................................................................ 45.11 般规定............................................................................ 45 . 2 巡视内容............................................................................ 45.3巡视方式............................................................................ 66内部检测................................................................................ 66.1 i 般规定............................................................................ 76 . 2 检测方法............................................................................ 76 . 3 管道功能缺陷检测....................................................................76 . 4 管道结构缺陷检测....................................................................76.5附属设施检测........................................................................ 87运行监测................................................................................ 97.1 i 般规定............................................................................ 97.2气体监测............................................................................ 97 . 3 液位监测........................................................................... 107 . 4 流量监测........................................................................... 107 . 5 水质监测........................................................................... 11