CTE Malaysia


Chengdu Metro Lines

CREG have supplied 30 TBM’s for excavation and extension work in five different metro lines in Chengdu over the last 2 – 3 years.

These machines have achieved up to 18 rings per day, tunnelling through sand and gravel conditions.

Basic information on these machines is….


Location Chengdu Metro Lines 1, 2, 3, 4 & 7
Geology Cobbles, sand and gravel
No. of TBM 30
Outer TBM Diameter 6.28 m
Length, incl. Backup 84 m
Cutterhead Power 945 kW Hydraulic Drive
Typical Progress Rate 12 rings/day
Max. Progress Rate 18 rings/day
Max. Drive Length 1.49 km
Comments Max settlement = 3.7mm
Best monthly rate - m 345

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