METHOD FOR CONSTRUCTING HOLE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a method for constructing a hole structure, in which the hole structure constituted by stacking a cylindrical block in a construction place is efficiently and safely constructed.SOLUTION: A method for constructing a hand hole 1 includes: installing in advance a liner plate 100 having a predetermined height on the ground surface of a narrow track vicinal place in the vicinity of a track 200 so that an upper end thereof is lower than a reference surface K; constituting cylindrical blocks 10 (20, 30 and 30a) so as to be lower in height than the liner plate 100; installing a portable transmountain unit 110 so as to straddle an upper part of the installed liner plate 100 during closing of a roadway; while suspending the cylindrical block 10 by the transmountain unit 110, excavating a lower part of the cylindrical block 10; hanging down the cylindrical block 10 by the transmountain unit 110 so that an upper end of the liner plate 100 is lower than a top end thereof; and removing the installed transmountain unit 110 before the closing of the roadway ends.