THEATHING CONSTRUCTION METHOD FOR EXCAVATION GROOVE INCLUDING TRANSVERSE PIPE AND SHEATHING SUPPORT

摘要

PURPOSE: To provide a sheathing construction method which is suitable for theathing an excavation groove including a transverse pipe while safety is enhanced when the pipe is removed. ;CONSTITUTION: Each waling 3 having an opening section 35 which enables a transverse pipe in an excavation groove to be penetrated through as viewed from the side, is lowered down to a pre-excavared groove, the opening section 25 of the waling 3 is released downward before each waling 3 hits against the transverse pipe 8 within the excavation groove. After each waling has been lowered down in such a way that the transverse pipe 8 comes in the inside of the opening section 35 through a released section 36, the released section 36 is closed thereafter.;COPYRIGHT: (C)1994,JPO&Japio