13 февраля 2020 в 14:53
AVN-3700AH Herrenknecht AG
For tunneling in tubing lining
The size of the constructed tubing ring DA / DN 4300/3700 mm, the thickness of the ring 1000 mm
Outside diameter of cutting - 4540 mm
The inner diameter of the tunnel under construction is 3700 mm
Driving grade up to 1200 m
Two modes of excavation and water backhaul in AVN mode.
In the mode of soil recessing, the length of penetration can reach several kilometers.