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.
作者
万鹏
WAN Peng(The Third Engineering Co.,Ltd.of China Railway 18th Bureau Group,Baoding 072750,Hebei,China)
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
关键词
浅埋
隧道
围岩变形
开挖参数
shallow buried
tunnel
surrounding rock deformation
excavation parameters
