PPS has been awarded the contract for a 6.6m diameter Earth Pressure TBM, to be used in the construction of one of the principal sections of the second circular line for the Moscow metro system.
This line is part of an ambitious programme drawn up by the
Moscow authorities to increase their Metro coverage by more than 70 km. It will link in with several radial lines, considerably reducing pressure on the first circular line build back in the 1930s.
The TBM, built on behalf of SMU ENGEOCOM, will be digging
out a bi-tube tunnel through geology which is mainly limestone, clay and sand.
The tunnel will link the ‘Khodynskoe Pole’ and ‘Delovoy tsentr’ stations, to the north west of the city, some 6,200 m in total, with two intermediate stations at 2 km intervals.