CL2023000526U1 - Friction actuation bolt with integrated plug for fortification of advance fronts - Google Patents

Abstract

IN UNDERGROUND MINING, TUNNELING AND CIVIL WORKS, WORK IS CARRIED OUT THAT CORRESPOND TO EXCAVATIONS THROUGH THE ROCK MASSIF. THERE ARE EXCAVATIONS IN WHICH IT IS NECESSARY TO STRENGTHEN THE ADVANCE FACE, USING FRICTION ACTUATION BOLTS COMMONLY KNOWN IN THE MINING SECTOR AS "SPLIT SET" TYPE BOLTS. THESE HAVE AN EMPTY INTERIOR VOLUME WITH AN OUTLET THROUGH THE OUTSIDE END OF THE BOLT OR MOUTH WHICH MAKES POSSIBLE THE RISK OF VOLUNTARY OR INVOLUNTARY INTRODUCTION OF EXPLOSIVES AND/OR BLASTING ACCESSORIES INSIDE THE BOLT. THE PRESENT INVENTION CORRESPONDES TO A FRICTION ACTUATION BOLT WITH AN INTEGRATED BLUTTER FOR FORTIFICATION OF ADVANCE FRONTS, WHICH IS COMPOSED OF A FRICTION ACTUATION BOLT AND A BLUTTER DEVICE THAT PREVENTS THE INSERTION OF EXPLOSIVES AND/OR BLASTING ACCESSORIES INSIDE OF THIS DURING THE LOADING STAGE OF EXPLOSIVES AT THE FACE, ELIMINATING THE RISK OF HANDLING AND/OR UNCONTROLLED DETONATION OF EXPLOSIVE ELEMENTS INSIDE THE GROOVED TUBE DURING THE LOADING STAGE OF EXPLOSIVES AT THE EXCAVATION FACE, DURING THE REMOVAL OF BURNED ROCK WHICH CONTAINS THESE BOLTS, OR IN SUBSEQUENT STAGES WHERE PEOPLE AND INFRASTRUCTURE MAY BE EXPOSED, AND WHICH ALSO ALLOWS THE RETAINING OF GASES GENERATED DURING BLAST BLAST, PREVENTING THE GASES FROM BEING RELEASED THROUGH THE MOUTH OR EXTERNAL END OF THE BOLT, IMPROVING THE DEGREE OF CONFINEMENT OF THE FACE AND THEREFORE THE USE OF THE ENERGY RELEASED FROM THE BLASTING BLASTS TO FRAGMENT THE ROCK.