Taking Changzhou rail transit engineering at the first period as an example,the paper introduces basic foundation excavation princi-ples,describes subway engineering foundation excavation technologies and technical demands,and puts forward corresponding quality and safety guaranteeing measures,which has accumulated construction experience of foundation excavation engineering in future.%以常州轨道交通一期工程为例,介绍了基坑开挖的基本原则,阐述了地铁工程中基坑开挖的施工工艺及其技术要求,并提出了相应的质量和安全保证措施,为今后的基坑开挖工程积累了施工经验。
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