Adhesive containing tubular rock anchor

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;
• at least one compartment positioned within the cartridge;
• a first adhesive component positioned within the at least one compartment;
• a second adhesive component positioned within the cartridge and fluidly separated from the first adhesive component;
• a fluid inlet valve assembly engaging one end of the tubular body adjacent the trailing end, the fluid inlet valve assembly connectable to a fluid source to introduce fluid into the body and the cartridge;
• a mixer positioned at least partially 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 blade which is operable to sever a wall of the at least one compartment when the blade 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 compartment and the second adhesive component from the cartridge towards the leading end and into the mixer.