介绍深圳地铁在繁华地段、复杂环境以及富水地层、软砂土层情况下,隧道暗挖在施工中遇到的困难及解决的办法;分析总结深圳地铁在复杂的地理条件下所采取的桩基托换技术措施,提出在城市地下工程施工中应注意的事项。 This paper introduces the difficulties encountered in construction of tunnel undercutting in the prosperous areas, complicated environment, water-rich strata and soft-sand stratum in Shenzhen Subway and the solutions to it. The paper analyzes and summarizes the problems encountered during the construction of Shenzhen Subway under complex geological conditions Quito for technical measures, proposed in the city underground construction should pay attention to matters.