STEEL PIPE PILE PART REMOVAL METHOD FOR EARTH RETAINING WALL

PROBLEM TO BE SOLVED: To provide a steel pipe pile part removal method for an earth retaining wall of a start/arrival shaft of a shield machine using a cutting device and a lifting device. SOLUTION: A removal part of a steel pipe pile is removed to an upper part of a steel pipe or to the ground by a method of cutting the removal part into trisected or quadrisected block pieces by the cutting device having either one of electric erosion fusion, high pressure water cutting, grinding wheel cutting, chemical fusion, explosion fusion or arc discharge cutting for horizontal and vertical cutting from the inside, and forming connection parts of a lifting wire at the cut block pieces, or connecting the block pieces to a wire end by magnet attraction, vacuum suction or bonding to lift them. COPYRIGHT: (C)2007,JPO&INPIT