摘要
地铁隧道在开挖施工过程中使地层发生变形,地层的变化会对其上部建筑物产生一定影响,因此,分析隧道开挖对地层变形的影响规律是研究计算和评价建筑物损害程度的重要前提,本文借助MIDAS GTS、FLAC3D数值模拟软件,分析隧道开挖后导致地层变形的特征及地表沉降规律,并研究了管棚支护参数对地层变形特征和地表沉降的影响,着重分析了围岩应力分布、变形和地表沉降的影响,为浅埋隧道的施工提供合理的理论依据。
In the process of excavation and construction of subway tunnel,the stratum will deform,and the change of stratum will have a certain impact on its upper buildings.Therefore,the analysis of the inf luence law of tunnel excavation on stratum deformation is an important prerequisite for studying and evaluating the damage degree of buildings,This paper analyzes the characteristics of ground deformation and the law of surface settlement caused by tunnel excavation,and studies the inf luence of pipe roof support parameters on stratum deformation characteristics and surface settlement,focusing on the analysis of the inf luence of surrounding rock stress distribution,deformation and surface settlement,so as to provide reasonable theoretical basis for the construction of shallow buried tunnel.
作者
李伟
LI Wei(The First Engineering Co.,Ltd.of China Communications Third Public Bureau,Beijing,100012 China)
出处
《科技创新导报》
2021年第16期16-19,共4页
Science and Technology Innovation Herald
关键词
隧道开挖
数值模拟
变形特征
管棚支护参数
应力分布
Tunnel excavation
Numerical simulation
Deformation characteristics
Pipe roof support parameters
Stress distribution
