DRILL ROD FOR BREAKING UP THE EDGES OF BOREHOLES AND A METHOD FOR BREAKING UP THE EDGES OF BOREHOLES

摘要

This invention concerns a drill (11) rod (13) for breaking up the edge (12)of a hole (10), which comprises a cylindrical body (1), a buffer (3) andinjector nozzles(2). Said rod (13) injects air and water through its injector nozzles (2) atthe materialdeposited at the edge (12) of the hole (10), thus achieving the breaking upthereofwithout the need to use auxiliary equipment or manual operations.This invention also concerns a method for breaking up the edge (12) of ahole (10), which uses a rod (13) to break up the edge (12) of a hole (10),which comprisesthe stages necessary to perform this operation using a drill (11).