通过北京铁路北京站至北京西站地下直径线工程泥水处理系统的研究与应用实践经验，总结了城市繁华地段砂卵石条件下大直径盾构泥水分离应用技术，希望对类似工程有借鉴作用。

This paper gives a summary on application technology of slurry and water separation in condition of sandy-gravels layers in city's busiest street on base of underground diameter project from Beijing railway station to Beijing railway west station,with the hope of providing reference to the future similar project.