EGM12A Rock Bolting Jumbo,creates a new concept of "single carriage + single rock dil", overturns the traditicnal practice of "double sliding frame + double rock drill". Drilling,  net hanging and bolting are automatic in the whole process, it makes the bolting work become safe, efficient, relaxed and humorous. The machine is small in size and flexible in walking. It is used module design, which is convenient for disassem- bly and assembly. and is suitable for all kinds of cages to go down underground and transfer.