【摘要】 文章首先概括介绍了饱和砂土、粉土地震液化的机理及判别方法,并重点介绍城市地铁盾构隧道抗地震液化问题的处理方法,其中就地铁开挖后土层是否液化以及注浆处理后的液化范围进行的初步探讨,对城市地铁勘察设计和施工具有一定的参考价值。更多还原

【Abstract】 This paper briefly introduces the liquefying mechanism of ground at saturated sandy and silty soil due to earthquake and the identifying method and presents the treatment measures to liquefying occurred at the shield-driven tunnel in urban metro. In the meantime, the problems of liquefying after metro construction and liquefying scope after grouting are discussed, which can be taken as a reference for the survey, design and construction of urban metro in the future.更多还原