AUXILIARY TUNNELING APPARATUS

摘要

An auxiliary tunneling apparatus includes a reaction force receiver and first and second split components. In the excavation of a second tunnel by a boring machine, the reaction force receiver forms a replacement face of a side wall of the second tunnel on a first tunnel side where the first and second tunnels intersect each other, and a gripper of the boring machine pushes against the replacement face. The first and second split components are installed to push against the side wall of the first tunnel, support the reaction force receiver within the first tunnel, and move back and forth with respect to the side wall of the first tunnel.

主权项

1. An auxiliary tunneling apparatus installed in an excavated first tunnel to assist in excavation done with a boring machine that performs excavation by rotating a cutter head in a state in which a gripper pushes against a side wall, when the boring machine is used to excavate a second tunnel that intersects the first tunnel, the auxiliary tunneling apparatus comprising:
a reaction force receiver that forms a replacement face for the side wall of the second tunnel on the first tunnel side where the first and second tunnels intersect each other in the excavation of the second tunnel by the boring machine, and with which the gripper of the boring machine pushes against the replacement face; and a support component installed to push against the side wall of the first tunnel, that supports the reaction force receiver inside the first tunnel, and that is able to move back and forth with respect to the side wall of the first tunnel.