近年来,进排水涵管和各种管线穿越公路、铁路、河道和建筑物施工频繁。利用顶管法施工比开槽挖土,减少了施工场地面积,节约了开挖土方费用,缩短了工期,不会影响所穿越设施的正常使用,减少不必要损失。顶管法是在地下工作坑内用千斤顶逐渐将管道压入土内,土从管内用人工或机械挖 In recent years, culvert pipelines and various pipelines have been frequently constructed through roads, railways, rivers and buildings. The use of pipe jacking construction than slotted excavation, reducing the construction site area, saving excavation earthwork costs and shorten the construction period will not affect the normal use of the facilities crossed to reduce unnecessary losses. Pipe jacking method is used in the underground pit with a gradual jacking pipe into the soil, soil from the pipe by manual or mechanical digging