在运输繁忙的营业线上增建箱涵,如果箱涵穿越股道较多,涵身较长,顶部无复盖土或复盖土不厚,在顶进时能将线路架空时,可不修筑后背墙,采用顶拉法施工较为合适。最近几年,我们学习了兄弟局的经验,结合我们现有的设备情况,在我局采用顶拉法较成功地将箱涵顶拉就位。 In the transportation busy business line to increase the box culvert, if the culvert culvert through more shares, longer culverts, the top of the soil cover or cover the soil is not thick, when the line can be overhead into overhead, not to build Back wall, using the top-pull construction more appropriate. In recent years, we have learned the experience of the fraternal offices and combined with our existing equipment, we successfully pushed the box culvert to the top using our top-draw method.