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旧管道修复技术在国内已经发展了近50年,发达国家已采用不开挖或少开挖对原有旧管道进行修复,其系列化配套技术日臻完善,可分为三大类:一是管内涂布法;二是塑料管穿插法;三是软管翻转法。软管翻转法的工艺造价低,该工艺不开挖、占地少、无污染、比挖沟换管工艺节省费用。旧管道修复技术不但增加了管道的使用寿命,同时也给企业带来了巨大的经济效益,是值得进一步推广的实用技术。
The old pipeline repair technology has been developed in the country for nearly 50 years. Developed countries have already used the existing excavation or excavation to repair the old pipeline, and its series of supporting technologies are improving. They can be divided into three categories: Coating method; the second is the plastic pipe interspersed; the third is the hose flip method. Hose flip method of low cost, the process is not excavation, less land, pollution-free than trench ditch pipe replacement process saves costs. The old pipeline repair technology not only increases the service life of the pipeline but also brings tremendous economic benefits to the enterprise and is a practical technology worthy of further promotion.