前言 1981年洪水后,宝成线多处发生病害,中断行车达一个多月之久。在进行抢建工程的勘测、设计与施工中,遇到了一些与新线不同的问题。通过两年多的工程实践,创造出一些适应各种病害特点的新结构、新工艺和新的施工方法,从而保证了施工与运营的安全,加快了 Preface In 1981 after the flood, many lines of disease occurred in Po Shing Line and the traffic was interrupted for more than a month. During the investigation, design and construction of the project of grabbing construction, some problems that are different from the new line have been encountered. Through more than two years of engineering practice, we have created some new structures, new processes and new construction methods that are adapted to the characteristics of various diseases, thus ensuring the safety of construction and operation and accelerating