摘要
结合南京地铁二号线一期工程苜蓿园站-小卫街区间小近距段工程，应用有限元数值模拟方法，研究小净距隧道围岩受力特性，总结小净距隧道围岩应力、变形和塑性区的分布特征和变化规律，为以后类似地铁小净距隧道的设计、施工提供技术依据。
In this paper, combined with the secondary line tunnels with small-interval of first stage for Nanjing metro from Muxuyuan to Xiaoweijie, the surrounding rock stress characteristics of the subway tunnels with small-interval are studied by the finite element numerical simulation method. By analyzing the rock excavation process of secondary stress, deformation and the change characteristics of the destruction of the plastic areas of the tunnels with small-interval,the adjacent formation stress, the distortion and the destruction area distribution characteristic and their change rule are summarized. The conclusions provide the theoretical basis for the design and construction of later similar subway tunnels with small-interval.
关键词
地铁
小净距隧道
围岩
特性
subway
tunnels with small-interval
surrounding rock
characteristic
