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Influence of Early-Age Properties of Shotcrete on Tunnel Construction Sequences

by Yanting Chang, Royal Inst of Technology, Stockholm, Sweden,
H?kan Stille, Royal Inst of Technology, Stockholm, Sweden,



Document Type: Proceeding Paper

Part of: Shotcrete for Underground Support VI

Abstract:

This paper presents a study on influence of the properties of young shotcrete as a tunnel lining on tunnel construction sequences, by a closed-form analytical solution of a circular tunnel. A review of young shotcrete properties and behaviour of the rock mass in the vicinity of the tunnel face is given. A parametric study is performed and the results show that a lining failure will occur if the tunnel excavations are ill-arranged.

Subject Headings: Tunnels | Shotcrete | Rock properties | Rock masses | Linings | Material failures | Failure analysis

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