| 摘要 |
The apparatus comprises an inlet hose (2) connected with a cap nut (1), a circlular supporting piece (3) fixed to a support using a link chain, a stay tube (6) formed with a male screw (5), a breaking member (12) having a female screw (7) plugging a lock nut (10) in a blast hole (9) with a test piece (11), another male screw (5") of a tube (20) connected to a femal screw (13) by a stop nut (23), a plurality of cylinders (17) plugging a blast hole (15) with a piston (14), tube (20) connected between the cylinders (17) and connected to a female (18) with a guide hole (18).
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