摘要
通过对软弱围岩区浅埋偏压条件下公路隧道新奥法施工现场监测数据的分析,得出浅埋偏压隧道开挖后软弱围岩的变形随时间变化的基本规律.利用ABAQUS软件建立了浅埋偏压隧道进口段数值计算模型,分析了隧道开挖状态下围岩应力场、位移场、塑性区分布特征,得出了在隧道开挖时危险部位及需要加强监控部位,可为类似工程提供借鉴参考.
By using the finite element software - ABAQUS, the authors set up the finite element model of shallow and unsymmetrical tunnel entrance segment in soft rock. The stress filed, displacement field and plastic field distribution of the surrounding rock under excavation condition were researched in this paper. Compared with the construction monitorina and the simulation results, some reasonable conclusions were nrovidacl.
出处
《佳木斯大学学报（自然科学版）》
CAS
2012年第6期819-823,共5页
Journal of Jiamusi University：Natural Science Edition
关键词
浅埋偏压
软弱围岩
监控量测
数值模拟
shallow and unsymmetrical
soft rock tunnel
monitoring and measurement
numerical simu-lation
