国内管中管非开挖技术原理综述

Summarization of Theory of No-dig Pipe-in-pipe Rehabilitation

本文力图用通俗的语言较详细地论证目前国内地下管线非开挖的各种管中管修复技术，以期指导管线管理部门在城市埋地管线维修中科学地选用管中管修复技术达到事半功倍的目的。

This text strives to demonstrate detailedly with popular expression about diversified pipeline-in-pipeline no-dig reparation technology which is applied in domestic underground pipeline and authors expect to instruct pipeline management department selecting scientifically pipeline-in-pipeline reparation technology and achieve purposes in getting twice the result with half the effort.