【摘要】 新松树湾隧道位于饱和的砂粘土中,土体的稳定性极差,施工难度较大。为此,在隧道施工期间,通过土工试验、隧道收敛和围岩内部位移的现场监测、隧道变形的三维有限元仿真计算等手段,对该隧道的变形规律进行了系统研究,获得了大量试验数据。研究成果对隧道的施工组织和支护参数的确定起到了重要作用,为此类隧道的施工积累了经验。更多还原

【Abstract】 The new songshuwan tunnel is excavated in saturated sandy clay which is weak and soft soil having low stability. In order to ensure safety of excavation, convergences of the tunnel and deformation of surrounding soil are examined by soil test and site monitoring as well as three-dimensional finite element analysis. Many significant conclusions are obtained from this study and some valuable advice for construction and support design of the new songshuwan tunnel is given. Experimental results can be used as a reference for future similar tunnel.更多还原