采用玻璃钢夹砂管内衬修复大口径污水管工程设计

Engineering Design of Large Diameter Sewage Pipe Lining Repairing with Centrifugal Casting Glass Fiber Reinforced Plastics (CCGRP) Mortar Pipes

江苏省某DN1 800污水主管运行近25年,全长约2.0 km,因管道长期高负荷运行和受污水腐蚀影响,管道存在严重结构性缺陷,主要为腐蚀和渗漏,严重影响城市污水管网运行安全和可靠性。该管段应做结构性修复更新,经技术比选,确定采用DN1 600玻璃钢夹砂管内衬修复,修复后可延长管道设计使用寿命50年以上,恢复主干管输水能力。

A main sewage pipe of DN1 800 has been running in Jiangsu Province for nearly 25 years, with a total length of about 2.0 km. Due to high-load running and sewage corrosion for a long time, the pipe has serious structural defects, mainly corrosion and leakage, which seriously affect the operation safety and reliability of the urban sewage pipe network. So the pipe section should be repaired and structurally updated. After technical comparison, DN1 600 CCGRP mortar pipe was determined to be used for pipe lining repairing. After repair, the designed service life of the pipe can be extended for more than 50 years, and the water delivery capacity of the main pipe can be resumed.