摘要
以实测地应力结果为基础,结合实际地质条件以及地层参数,采用3D有限元多元回归分析方法,对木寨岭隧道区域的原始宏观地应力场进行宏观拓展分析,特别是F11,F12,F13,F14,F14-1,F14-2等断层及其附近的应力状况.宏观地应力场的分析结果表明,断层处横向应力明显增大,而且断层中部的横向应力大于断层两侧,呈现出中间高两头低的应力分布现象.宏观地应力场的分析结果对工程设计与施工具有重要参考价值.
Based on the geological conditions and rock mass properties,a 3D mechanical model is established,and the regional geo-stress field of tunnel area is analyzed by 3D multivariate FE regression from limited stress data of in-situ geo-stress measurement,especially the stress condition in and around the faults of F11,F12,F13,F14,F14-1and F14-2.The results of macro geo-stress field indicate that the transverse stress of the fault is increased obviously,and the transverse stress in middle of the fault is greater than that on two sides of the fault.It is high in the middle and low on both sides.The results of macro geo-stress field are very important for dynamic design and construction.
出处
《兰州交通大学学报》
CAS
2015年第1期6-11,共6页
Journal of Lanzhou Jiaotong University
基金
铁道部科技开发计划项目(2009G009B4)
国家自然科学基金(51268031)
甘肃省自然科学基金(1107RJZA084)
关键词
隧道工程
木寨岭隧道
回归分析
有限元
tunnel engineering
Muzhailing Tunnel
regression analysis
FEM
