浅埋隧道施工围岩变形分析及开挖参数优化研究  

Analysis of Surrounding Rock Deformation and Optimization of Excavation Parameters in Shallow Tunnel Construction

作　　者：万鹏 WAN Peng(The Third Engineering Co.,Ltd.of China Railway 18th Bureau Group,Baoding 072750,Hebei,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北保定072750

出　　处：《广东交通职业技术学院学报》2022年第4期54-56,77,共4页Journal of Guangdong Communication Polytechnic

摘　　要：以某大断面隧道近洞口处浅埋段作为工程背景,通过对项目隧道的工程概况及水文气象条件进行分析,采用数值模拟计算和现场监测方法,研究开挖施工过程对围岩稳定性的影响,验证了三台阶七步开挖法在项目隧道中使用的合理性,并在此基础上优化其台阶参数,得出最优施工工况。Taking the shallow buried section near the entrance of a large section tunnel as the engineering background,according to the analysis of the engineering situation and hydro-meteorological conditions of the project tunnel,the numerical simulation calculation and on-site monitoring methods are used to study the influence of the excavation construction process on the stability of surrounding rock,and the rationality of the three-step seven step excavation method in the project tunnel is verified.On this basis,the bench parameters are optimized,and the optimal construction conditions are obtained.

关 键 词：浅埋 隧道 围岩变形 开挖参数 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]