Influence of New Energy Materials on Dynamic Interaction between Surrounding Rock and Structure of Heavy-Duty Railway in Small Clearance Crossing Tunnel
Table 2
Construction classification and engineering application of two or more new tunnels at the same time.
Engineering applications
Type
Due to conditions, the two tunnels were constructed in parallel to the left and right at a short distance. Usually, the two tunnels are mostly uplink and downlink
Side by side tunnel
Due to conditions, the two tunnels were constructed in close distance and overlapped with the upper and lower ones, which are more common in the upper and lower lines of the tunnel
Tunnels overlap up and down
Due to conditions, the two tunnels were built diagonally and staggered at close distances.
Tunnel diagonally staggered
Due to conditions, the space of the two tunnels is twisted and cross-constructed, which is mostly seen in the simultaneous construction of two subway lines or the positional relationship between the main line and the vehicle line
