What is the width of a ring in a tunnel
Generally used in the tunnel as a two car lining template
Of course, the assembly of the tunnel, such as subway shield tunnel, a ring is the length of the shield segment, there are 1.0m, 1.2m, 1.5m, 2.0m.
The car is generally long 9m can be a one-time pouring, a ring is a pouring two lining length
