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中文摘要：
市政管道工程采用的非开挖修复更新技术具有安全、适用、环保、经济等显著特点,在城市地下管网建设中具有良好的竞争优势.作为旧有管道修复的重要手段,对较为适宜的几种典型非开挖修复更新技术进行了应用分析,明确了城市地下管道非开挖修复更新技术应遵循的步骤.
英文摘要：
The trenchless technology of municipal pipeline engineering has the characteristics of safety, application, environmental protection and economy, which has a good competitive advantage in the construction of urban underground pipe network. As an important means of the old pipeline repair, application analysis on some typical trenchless repair and renewal technologies is carried out and the steps of trenchless retrofitting and repairing technology are determined.
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