Abstract Using the Qingdao Metro Line 2 as an example, this paper researches the geological factors affecting double-shield TBM tunnelling efficiency and its relevant geological adaptability for metro tunnels. The results show that the double-shield TBM is suitable for the tunnelling of the Qingdao Metro considering the compressive strength, intactness and abrasive resistance of the surrounding rock. Some suggestions are given for double-shield TBM tunnelling in soft rock.
Keywords :
Qingdao Metro
Double-shield TBM
Geological adaptability
Tunnelling efficiency
Abstract :
Using the Qingdao Metro Line 2 as an example, this paper researches the geological factors affecting double-shield TBM tunnelling efficiency and its relevant geological adaptability for metro tunnels. The results show that the double-shield TBM is suitable for the tunnelling of the Qingdao Metro considering the compressive strength, intactness and abrasive resistance of the surrounding rock. Some suggestions are given for double-shield TBM tunnelling in soft rock.
Keywords :
Qingdao Metro ,
Double-shield TBM ,
Geological adaptability ,
Tunnelling efficiency
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