Longitudinal deformation of Shield tunnel based on construction monitoring data

The rapid development of urbanization has changed the traffic and transportation in central area. change surrounding rock structural stress state project under construction caused by tunnel same period great harm to its safe use casualties. Shield technology can achieve excavation lining, with high degree automation. And it is a relatively common method at present. But adaptability section size environmental conditions poor. In view this, from analysis monitoring data, study established longitudinal model considering lateral effects perspective characteristics. It also achieved assessment improvement through deformation calculation, segment ring bolt calculation formula correction. experimental results showed that opening circumferential seam right line test this 8.9 mm. radius curvature 758 mm, safety level 3. This effectively guarantee shield good guiding value for management maintenance.