Comparison of trenchless repair technologies for existing pipe networks in urban renewal
城市更新中既有管网非开挖修复技术比选

摘要

随着城市化进程的加快，城市基础设施的老化问题愈发突出，尤其是管网系统的老化和损坏问题，亟需高效、低影响的修复技术来进行解决。传统的开挖修复方式不仅对环境造成较大影响，而且施工周期长，成本高。非开挖修复技术作为一种新型的管网修复方法，因其能有效减少地面破坏和施工时间，逐渐在城市更新工程中得到广泛应用。本文通过对比分析现有的非开挖修复技术，包括内衬修复、定向钻探等技术的优缺点，旨在为城市更新中的管网修复提供一种科学、可行的技术方案。选择合适的非开挖修复技术不仅能有效提升修复效率，还能减少对周边环境的负面影响，具有显著的经济和社会效益。

Abstract

With the acceleration of urbanization, the aging problem of urban infrastructure has become increasingly prominent, especially the aging and damage of pipe network systems, which urgently require efficient and low-impact repair technologies for solutions. Traditional excavation-based repair methods not only have a significant impact on the environment but also involve long construction cycles and high costs. As a new type of pipe network repair method, trenchless repair technology has gradually been widely applied in urban renewal projects due to its ability to effectively reduce ground damage and construction time. This paper compares and analyzes existing trenchless repair technologies, including the advantages and disadvantages of lining repair, directional drilling, and other technologies, aiming to provide a scientific and feasible technical scheme for pipe network repair in urban renewal. Selecting appropriate trenchless repair technologies can not only effectively improve repair efficiency but also reduce negative impacts on the surrounding environment, with significant economic and social benefits.