Patent ID: 9200514
Filing Date: 2015-12-01
Classification: E21D

Abstract:
1. A rock anchor comprising: an elongate tubular body; a cartridge positioned in the elongate tubular body and having a rigid tubular housing with a leading end and an opposed trailing end; a first compartment and a second compartment defined within the cartridge; a first adhesive component positioned within the first compartment; a second adhesive component positioned within the second compartment fluidly separated from the first adhesive component by a partitioning wall; a fluid inlet valve assembly engaging the trailing end, the fluid inlet valve assembly connectable to a fluid source to introduce fluid into the cartridge; a mixer positioned within the elongate tubular body at the leading end of the cartridge; and a pressing member positioned within the cartridge towards the trailing end, the pressing member including a bladed formation which is operable to sever the wall when the bladed formation is caused to advance towards the leading end in response to fluid flowing into the cartridge, to thereby force the first adhesive component from the first compartment and the second adhesive component from the second compartment towards the leading end and into the mixer.