Research on Lining Design and Excavation Construction Technology of Long-span Tunnel
Taking a tunnel project in Guizhou Province as an example,this paper analyzes the lining design and excavation construction tech-nology of a long-span tunnel,and monitors the deformation around the tunnel project,arch settlement and surrounding rock pressure.The re-sults show that the horizontal convergence of the tunnel excavation project is 21 mm,the pressure level of the surrounding rock of the tunnel is stable at 1.67 MPa,and the settlement of the tunnel vault is stable at 31.2 mm.All the monitoring data do not exceed the warning value in the design scheme.The lining design and excavation construction technology adopted in the project have good construction effect.The large span tunnel engineering design scheme with composite lining and advanced support has a good market application scenario.
国家科技期刊平台
NSTL
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