While the shield tunnel and its construction construction method, burying and resetting and construction method, digging Shank doing

摘要

PROBLEM TO BE SOLVED: To rationally build and backfill a shield tunnel to be backfilled in the future.;SOLUTION: When building the shield tunnel, when a shield machine passes through a backfilling starting expected point, a cylindrical timbering member 3 is prearranged outside a segment assembled at the point. When backfilling the built shield tunnel, a disassembling machine 8 is assembled with the timbering member as a skin plate at the backfilling starting expected point, and the segment 5 is disassembled and removed on its inside while timbering by the disassembling machine, and a backfilling material 11 is filled on the rear side in its moving direction while moving the disassembling machine. The timbering member is preinstalled inside a tail part of the skin plate of the shield machine. A face plate 10 functioning as a filling form of the backfilling material is arranged inside the timbering member.;COPYRIGHT: (C)2008,JPO&INPIT