At present,during the construction of advancing culvert box at home and abroad,the soil in front of box should be reinforced to retain stability.

• 目前,国外在软土地区箱涵顶进施工中均对箱涵顶进工具管开挖面前的土体进行加固,以保证在箱涵高度范围内的土体能够自立稳定。