SHIELD MACHINE, CONSTRUCTION METHOD FOR TUNNEL, AND TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a shield machine or the like capable of excavating a shield and at the same time maintaining the stability of a shield tunnel in the shield tunnel exposed partially on a water bottom. SOLUTION: A shield machine 1 constructs a segment 33 while excavating ground in the state where it is partially exposed from a water bottom 39, and at the same time advances while applying anti-washout mortar and accelerating agent 35 on the exposed part of the segment 33 from the injection pipe 9 of an injection part 7 provided on the upper part of the shield machine 1. By the construction the lining segment 33 can be protected, and a tunnel exposed partially from the face of the water bottom 39 can be constructed.