Continuous tight curved belt conveyor of R30 m did a TBM drift excavation a lot of good-Shimizu No.4 Tunnel on 2nd Tomei Expressway

Japan Highway Public Corporation is now constructing the Second Tomei Meishin Expressway with a total length of 502 km from Tokyo to Kobe, as an effort to develop a network of expressways covering the Pacific side of Japan. Shimizu No.4 Tunnel on 2nd Tomei Expressway is located at about 7 km northwest of the existing Tomei Expressway Shimizu Interchange. This tunnel consists of about 2,160 m up-and down-bound lines of 3-lanes, each having an inner cross section of about 180 m2.