SHIELD MACHINE FOR UNDERGROUND JUNCTION

摘要

PROBLEM TO BE SOLVED: To provide a shield machine for underground junction in which machine length is shortened. SOLUTION: In the shield machine for underground junction in which one shield machine 1 and the other shield machine 6 are pipe-jacked oppositely and a shield frame for the other shield machine 6 is fitted and joined to the shield frame 2 for one shield machine 1, the shield frame for one shield machine is composed of a front drum 3 and a rear drum 4 connected to an intermediate folding joint 5, and a sliding hood 7 slidable in the axial direction is mounted on the outer circumferential section of the front drum 3 while a cutter supporting section 8 moved forward together with the sliding hood 7 when the sliding hood 7 is slid forward as being separated and retracted from the sliding hood 7 after the completion of the sliding of the sliding hood 7 is secured into the sliding hood 7 and the front drum 3.