Hybrid-type rock splitting packer using water pressure and rubber inflation pressure

A hybrid-type rock splitting packer using water pressure and rubber inflation pressure, the hybrid-type rock splitting packer comprising:

• a packer unit (100);
• a water pressure supply control unit (200) including a water pressure pipe (210) and first spray holes (220) spaced a predetermined distance apart from each other at a longitudinal center of the water pressure pipe (210) and supplying water at a predetermined level to the first spray holes (220) through the water pressure pipe (210);
• a contraction pressure supply unit (300) including a contraction pressure pipe (310) installed at a predetermined distance from a side of the water pressure pipe (210) and supplying hydraulic pressure or water pressure at a predetermined level to the contraction pressure pipe (310);
• an inflation pressure supply unit (400) including an inflation pressure pipe (410) installed at a predetermined distance from the other side of the water pressure pipe (210) and hydraulic pressure or water pressure at a predetermined level to the inflation pressure pipe (410);
• and
• a crack expansion unit (500) connected with the packer unit (100);
• wherein the packer unit (100) further includes:
• a cylinder tube (102) including the contraction pressure pipe (310) and the inflation pressure pipe (410);
• a piston (101) disposed in the cylinder tube (102), being in contact with hydraulic pressure or water pressure supplied to the cylinder tube (102) at a side thereof, and being longitudinally moved by the hydraulic pressure or water pressure;
• a wedge-type cylinder rod (110) being in contact with the other side of the piston (101) and being longitudinally moved by pressure applied by the piston (101);
• a holder (130) disposed at a side on an outer circumferential surface of the packer unit (100) and expanding in a width direction when the wedge-type cylinder rod (110) is inserted along an inner circumferential surface of the cylinder rod cover (120) formed on a side of the piston (101);
• and
• a holder separation tab (140) disposed on a side of the cylinder rod cover (120) to smoothly induce separation of the holder (130) fitted in the wedge-type cylinder rod (110) when the wedge-type cylinder rod (110) is moved backward.