潜孔锤钻进工艺在北京地铁降水工程中的应用

摘要

hrough analyzing pneumatic hydro-hammer drilling mechanism, the essay develops large-diameter pneumatic hydro-hammer drilling technique in loose stratum, which has provided new techniques and new methods for solving difficulties occurring in current subway dewatering engineering in Beijing, such as long construction duration, great traffic pressure, and ground pollution and so on.%通过对气动潜孔锤的钻进机理进行分析,研究出适用于松散地层中大直径气动潜孔锤跟管钻进工艺,为解决目前北京地铁降水工程中出现的施工工期长、交通压力大、地面污染大等难以解决的问题提出了新技术和新方法。