Scholarlink

<p>Mountain tunnel portals unavoidably traverse slopes, forming tunnel–slope systems. During the construction of these systems, engineering disasters such as slope deformation and sliding induced by tunnel excavation and collapse often occur. Using the Hanshankou tunnel as an engineering case, the deformation and force occurring during the entire construction process of the tunnel–slope system were monitored. The daily variation in tunnel vault settlement was 1.85&#xa0;mm, and after 48&#xa0;days, the cumulative settlement reached 84.1&#xa0;mm. Tunnel–slope system disasters involve progressive instability failure processes, and deformation does not converge before a disaster can occur. Under the action of slope deformation, a deep buried side liner can experience extrusion deformation into the tunnel, and a shallow buried side can experience extrusion deformation outside the tunnel. During the tunnel design process, the tunnel–slope system should not be simply regarded as a conventional biased tunnel, and the influence of slope deformation on the bearing capacity of the liner should be considered. Finally, on the basis of the numerical analysis and monitoring results, the causes of slope sliding and the effectiveness of reinforcement measures were analyzed, and lessons to prevent similar events in the future were summarized.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Deformation distribution characteristics of a tunnel–slope system and its reinforcement measures

  • 期刊论文

  • 发表日期：

    2025年5月6日

查看全文
  • Xiaoxu Tian,
  • Zhanping Song,
  • Yun Cheng,
  • Junbao Wang

摘要

Mountain tunnel portals unavoidably traverse slopes, forming tunnel–slope systems. During the construction of these systems, engineering disasters such as slope deformation and sliding induced by tunnel excavation and collapse often occur. Using the Hanshankou tunnel as an engineering case, the deformation and force occurring during the entire construction process of the tunnel–slope system were monitored. The daily variation in tunnel vault settlement was 1.85 mm, and after 48 days, the cumulative settlement reached 84.1 mm. Tunnel–slope system disasters involve progressive instability failure processes, and deformation does not converge before a disaster can occur. Under the action of slope deformation, a deep buried side liner can experience extrusion deformation into the tunnel, and a shallow buried side can experience extrusion deformation outside the tunnel. During the tunnel design process, the tunnel–slope system should not be simply regarded as a conventional biased tunnel, and the influence of slope deformation on the bearing capacity of the liner should be considered. Finally, on the basis of the numerical analysis and monitoring results, the causes of slope sliding and the effectiveness of reinforcement measures were analyzed, and lessons to prevent similar events in the future were summarized.