The paper indicates the meaning for measuring the vault crown settlement in the subway construction,explores the allocation of the tested points and some common measurement methods,and analyzes the advantages,disadvantages and applied scopes of various measruement methods,so as to provide the technical direction for the selection of the measurement methods in the factual projects.%论述了地铁施工中拱顶下沉测量的意义,具体对测点布置以及几种常用的测量方法作了探讨,并分析了不同测量方法的优缺点及适用范围,为具体工程中测量方法选择提供了技术指导。
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