Multi-layer Composite Shotcrete Tunnel Lining and Construction Method therefor

摘要

The present invention is a function of the tunnel lining by placing the shotcrete to demonstrate the different features and performance with a multi-layer while maximizing the shotcrete tunnel lining of the multi-layer composite cross-sectional structure of a new structure which can reduce material costs, the present invention relates to the application method. ; in the present invention, a shotcrete tunnel lining formed in the excavation surface of the tunnel, so as to prevent falling off or collapse of the excavation surface of cement, and water and aggregates containing an accelerator for expressing a desired early strength Shotcrete blown off early strength that is attached directly to the excavation of the tunnel shotcrete layer consists of the expression (10), the early strength development shotcrete layer 10 is formed over for Zibo blown off by forming a permanent expression of the long-term strength and toughness jibojae shotcrete layer 20 with shotcrete tunnel lining of the multi-layer composite, characterized in that the cross-sectional structure having a multi-layered structure consisting of, and their construction methods are provided.