铁路通水箱涵接长的施工方法

Extended Construction of Railway Culvert

在确保现有火车车辆通车安全的前提下,考虑到A河道为地区性主要输水通道不能长时间占用河道施工,经过实地现场踏勘利用A河道与B河道上下游相通的有利地理条件,对A河道处已有的通水箱涵两头临时性封堵后立即开展通水箱涵接长施工.着重对施工过程如基坑围护、开挖、立模、浇筑、回填等施工步骤进行介绍,并针对施工中的难点、风险点进行浅析,提出处理及应对对策.

In ensuring the existing traffic safety and Channel A as the regional main channel,an extended construction plan of water culvert is talked about based on site survey,which takes geographical advantage of the interlinked upstream and downstream of Channel A and B. It is suggested that the extended construction of the water culvert can be conducted after temporary plugging the two heads and the construction process,such as foundation pit enclosure,excavation and formwork,casting and backfill,are introduced. The construction risks are also analyzed and countermeasures are put forward.