褶皱挤压薄层碳质软岩隧洞大变形的应对措施

Solution for Large Deformation of Folded and Extruded Thin Carbon Soft Rock Tunnel

隧洞通过地质软岩洞段时极易发生软岩大变形,形成安全隐患。通过从围岩条件、地质结构、支护措施、施工工艺等引发变形的各种因素,进行归类、分析,总结出一套适应褶皱挤压发育薄层碳质泥页岩地层中的变形控制措施和施工工艺,将隧洞变形量控制在一定范围内,减少侵线事件,提高施工效率。

Large deformation of soft rock occurs easily when the tunnel passes through the geological soft rock section,thus forming potential safety hazards.By classifying and analyzing various factors that causing deformation such as surrounding rock condition,geological structure,support measures and construction technology,a set of deformation control measures and construction technology adapted to fold compression development in thin layer of Carbon Mudstone shale formation is summarized,which can control tunnel deformation within a certain range,reduce line intrusion events and improve construction efficiency.