结合江苏省江都至海安高速公路海安三合同段路基施工实例,为解决路基填筑过程中取土场不足的问题,施工单位遵循取土场“深挖少占”的原则,加大投入采用了大口径井点(深井)降水的辅助施工方法。文章从深井布置、深井带来的经济效益与社会效益等方面,简要阐述和分析了大口径井点降水(深井)在路基施工中的应用。 Combined with the construction example of Hai’an-Tri-Contract section of Jiang’an-Haian Expressway in Jiangsu Province, in order to solve the problem of lack of earth borrowing area during the embankment filling, the construction unit should follow the principle of " A large diameter well point (deep) precipitation auxiliary construction method. The article briefly elaborates and analyzes the application of large-diameter well point dewatering (deep well) in subgrade construction from aspects of deep well arrangement, economic benefits and social benefits brought by deep well.