DEMOLITION METHOD FOR CUT-OFF WALL, AND CUTTING DEVICE FOR DEMOLITION

摘要

PROBLEM TO BE SOLVED: To provide a demolition method for efficiently demolishing a cut-off wall in units of small blocks.;SOLUTION: In the demolition method for the cut-off wall 10 constructed by driving steel sheet piles 11 in an arch shape to a dam body 1 and placing concrete in a double sheet pile wall partitioned in a plurality of chambers in an arranged direction by two-ply webs inside, the double sheet pile wall is vertically cut between the two-ply webs, and attached plates attached to rigid joints of the steel sheet piles and joints J of upper/lower steel sheet piles are laterally cut at the parts along the joints J. The upper part of the block divided by cutting is pushed outward by a pressing device with one end supported to the dam body 1, to press and break internal concrete in the units of blocks.;COPYRIGHT: (C)2004,JPO&NCIPI