CURVE CONSTRUCTION METHOD FOR SHIELD TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a curve construction method for a shield tunnel which permits easy setting of the start point for a shield tunnel curved section and realizes good execution conforming to the scheduled route by interposing an adjusting section during the curved execution of the shield tunnel. ;SOLUTION: In a curved tunnel construction method in which a taper ring 4 is assembled from the terminal of a straight section F of a shield tunnel to be executed by assembling segments, an adjusting section comprising an adjusting segment 30 for adjusting the start position of the shield tunnel curved section C between the terminal of the shield tunnel F and the curve start point of the shield tunnel curved section C by the taper ring 4.;COPYRIGHT: (C)2000,JPO