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1工程概况引滦入津工程的输水线路在规划时为保证水质不受污染及在非正常输水情况下水厂供水不间断，在尔王庄以下输水线中采用明渠和暗渠输水，以暗渠和钢管道直接送水到水厂．该暗渠全长26km，暗渠工程按二级水工建筑物考虑，混凝土强度R一Zoo，抗渗标号人，钢筋为1级钢筋，
1 Project Overview Luan River into the Tianjin Water Project in the project to ensure that the water pollution in the planning and water supply in the case of non-normal water supply uninterrupted waterway in the following Wangzhuang Zhuanghe and the underdeveloped channel water, Drainage and steel pipelines directly to the water plant. The total length of the culvert is 26km. The underdrain project is designed according to the secondary hydraulic structure. The strength of concrete, R-Zoo, impermeable label,