论文部分内容阅读
小口径管道一般系指直径500mm以下的各种用途的管道,这类管道在工程中数量较多。在铺设管线时,往往会遇到管道穿越铁路、马路、河道以及其他障碍物的情况,给施工带来很大困难。如果采用大开挖办法施工,则破坏路面、中断交通,造成损失;如果采用普通顶管法施工,则必须扩大套管直径,最小要加大到φ800,工作人员才能进去操作,这样就加大了开挖量,造成浪费。为了解决宝钢第二期、第三期建设中可能出现的小口径管道穿越各种障碍物的施工问题,宝钢工程指挥部
Small-diameter pipelines generally refer to pipelines of various diameters and diameters of less than 500 mm. These pipelines have a large number of projects. When laying pipelines, it is often the case that pipelines cross railways, roads, rivers, and other obstructions, creating great difficulties for construction. If a large excavation method is used, the road surface will be damaged, and the traffic will be interrupted, resulting in losses; if the ordinary pipe-jacking method is used, the casing diameter must be enlarged. The minimum diameter must be increased to φ800, so that the staff can enter the operation and increase The amount of excavation caused waste. In order to solve the possible construction problems of Baosteel’s second-phase and third-phase construction of small-diameter pipes through various obstacles, Baosteel Engineering Command