近距离开挖基坑对下部盾构隧道的影响分析

摘要

According to the calculation method of the three-dimension numerical calculation,the paper figures out the deformation law for the shield tunnel in the excavation process of the foundation pit,points out the adoptable consolidation measures to reduce the foundation pit spring-back and ensure the safety of the shield tunnel structure by adopting the space-time effect,and analyzes the numerical calculation of the founda-tion pit excavation.%利用三维数值计算方法，找出了基坑开挖过程中盾构隧道的变形规律，并提出了可采取的加固措施，通过运用时空效应原理，对基坑开挖的数值计算进行了分析，以减小基坑回弹量，确保盾构隧道结构的安全。