PROPELLING JACK INSTALLATION METHOD WHICH EXPANDS REPAIR HOLE SPACE OF SEMI-SHIELD METHOD

摘要

The present invention relates to a method of installing a propulsion jack for expanding a work space of a semi-shield method, and more particularly, to a method of installing a propulsion jack for expanding a work space of a semi-shield method in which a propulsion jack for propelling an excavator at the time of excavating a tunnel by a semi-shield method is installed outside a working tool so that the working tool size during an initial construction can be reduced, construction costs and periods can be reduced, the working space can be efficiently utilized, and drilling can be facilitated. The method of installing a propulsion jack for expanding a work space of a semi-shield method of the present invention, which is a normal semi-shield construction method composed of a working tool vertically excavated to a planned depth, a reaction force wall provided on the opposite side to which the tunnel of the work is excavated, a hydraulic propulsion jack comprising a cylinder, a propulsion rod, and a pressure roller mounted on the reaction force wall, an excavator for excavating the tunnel, and a propeller tube, includes a first step of horizontally press-fitting a cylinder casing having both ends thereof through which the cylinder of the hydraulic propulsion jack can be received, through the reaction wall and the outer wall of the work tool; a second step of taking out the foreign matter introduced into the inside of the cylinder casing in the press-fitting process and blocking the tip with a cap; a third step of inserting a cylinder of the hydraulic propulsion jack into the cylinder casing and mounting the rear end flange so as to be caught by the reaction force wall; and a fourth step of installing a pressure ring at the tip of the propulsion rod of the hydraulic propulsion jack.;COPYRIGHT KIPO 2018