某高速公路隧道邻近断层施工力学响应特性分析  

Mechanical Response Characterization of a Highway Tunnel Constructed Adjacent to Faults

作　　者：许丽霞 XU Lixia

机构地区：[1]泉州市城建国有资产投资有限公司,福建泉州362000

出　　处：《福建建设科技》2023年第6期60-63,67,共5页Fujian Construction Science & Technology

摘　　要：在地下硐室施工过程中,隧道围岩变形破坏在很大程度上受断层等构造面控制,断层等软弱构造面须进行有效的治理。断层的分布组合特征决定了岩体变形破坏的性质和规模。针对这一问题结合公路隧道施工情况,根据实际断层方向、断层平面生产和隧道轴的角度不同,利用MIDAS/GTS专业有限元程序软件建立弹塑性模型,分析周边支承保护系统的实际结构状态和技术效果。根据断层的发展状态,探索不同批次周围岩石的变形和破坏特征,尝试研究断层影响下隧道周围岩石的变形隧道支撑特性和机制的深入定量分析,为隧道支撑提供科学依据。During the construction of underground caverns,the deformation and failure of tunnel surrounding rock are largely controlled by structural planes such as faults,which require effective treatment.The distribution and combination characteristics of faults determine the nature and scale of rock deformation and failure.In response to this problem,combined with the construction of highway tunnels,according to the actual direction of faults and the difference in the production of fault planes and the angle of tunnel axes,an elastic-plastic model is established using the professional finite element program software MIDAS/GTS to analyze the actual structural state and technical effects of the surrounding support protection system.According to the development state of faults,the deformation and failure characteristics of surrounding rocks in different batches are explored,and an in-depth quantitative analysis of the deformation and support characteristics and mechanisms of surrounding rocks under the influence of faults is attempted,providing a scientific basis for tunnel support.

关 键 词：断层 隧道工程 围岩稳定 数值分析 

分 类 号：U455[建筑科学—桥梁与隧道工程]