水平泥砂互层隧道围岩稳定性研究  

Stability Study of Tunnel with Surrounding Rock of Inter-layered Mudstone and Sandstone

作　　者：常伟 

机构地区：[1]中铁十二局集团第三工程有限公司,山西太原030024

出　　处：《石家庄铁道大学学报（自然科学版）》2013年第2期61-66,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：以大梁峁特长公路隧道为依托,针对水平层状岩体隧道,采用ANSYS数值分析软件将水平泥岩砂岩互层岩体等效为正交各向异性的方式,对隧道开挖过程中围岩稳定性进行了数值试验分析,通过分析围岩塑性区、围岩应力、隧道变形、锚杆轴力、初支及二衬内力,得出施工采用支护参数的合理性和水平泥岩砂岩互层隧道围岩变形和初支、二衬应力的分布特征。Based on the horizontally bedded surrounding rock of the Da-Liangmao extra-long highway tun- nel, the stability of surrounding rock has been studied by the numerical simulation. The horizontally mudstone and sandstone inter-layered rock mass is equivalent to the orthogonal anisotropic material in ANSYS. Through the analysis of the surrounding rock plastic zone, surrounding rock stress , tunnel deformation, the inner force of an- chor and internal force of lining, the rationality of the support parameter and the distribution characteristics of the tunnel deformation and internal force of lining are studied.

关 键 词：公路隧道 水平层状围岩 数值模拟 正交各向异性 围岩稳定性 

分 类 号：U452[建筑科学—桥梁与隧道工程]