Numerical Simulation Analysis on a Construction Method of Ultra-Closing Over-Cross Transportation Tunnels
By numerical simulation approach, this paper analyzed a new construction method for over-cross tunnel. In this method one concrete framework and two connecting walls were used in the intersection zone to meet the requirement of ultra-close distance between the two tunnels: the lining of upper tunnel rode through on the lower one’s via two connecting walls. This paper conducted a series of study on the mechanical behavior of rocks and structures during the construction period. The stability of the structure and the feasibility of construction method were evaluated.
H. R. Yu et al., "Numerical Simulation Analysis on a Construction Method of Ultra-Closing Over-Cross Transportation Tunnels", Advanced Materials Research, Vols. 261-263, pp. 1287-1291, 2011