Study on TBM Tunneling and Construction Layout of Long Distance Diversion Tunnel
Based on a hydropower station project located in Xinjiang Uygur Autonomous Region,this paper carried out the technical analysis of the application of Tunnel Boring Machine(TBM)in the project,and demonstrated the feasibility of TBM construction of diversion tunnels under the conditions of complex formation lithology and long tunneling distance.Accordingly,the construction site layout,construction branch tunnel layout,auxiliary cavity excavation and TBM slag extraction scheme are proposed.In the project,the TBM tunneling length is 11.35 km,and the maximum buried depth is 260 m.The construction of the tunnel has been basically smooth so far,and the project progress meets the expected requirements.It is of great significance to guide the subsequent construction of the project,and can also provide reference for the design ideas of TBM tunneling and construction layout of long-distance diversion tunnels.
Full section tunnel tunneling(TBM)construction layoutconstruction branch tunnelTBM slagging
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