SYSTEM FOR ORIENTED POINT LOADING AND RUPTURE OF BOREHOLE WALLS WITHOUT BLASTING Russian patent published in 2022 - IPC E21C37/02 

FIELD: mining.

SUBSTANCE: invention relates to mining. The system for oriented point loading and rupture of the borehole walls includes a cylindrical working device, the body of which is formed by upper 10 and lower 12 spacer plates of a semi-cylindrical shape, made with the possibility of expanding mirror to each other, a hydraulic cylinder, as well as a pump and pushing prefabricated rods. A wedge pair is located inside the working device, consisting of a movable wedge 13 and a wedge made in one piece with the upper spacer plate 10. The wedges are in contact with inclined flat surfaces, the planes of which are located at an adjacent angle to each other. Along the lower surface and the inclined surface of the movable wedge 13 in contact with the fixed wedge, incoming guides are made in the form of T-shaped protrusions. Along the inner surface of the lower spacer plate 12 and the inclined surface of the fixed wedge in contact with the movable wedge 13, reciprocal guides are made in the form of grooves with the possibility of moving the movable wedge along the reciprocal guides. A protective-connecting sleeve 7 of the hydraulic cylinder with a return spring 15 located in it in a preloaded state is fixed to the end of the working device. On the other hand, the sleeve is connected to the body 16 of the hydraulic cylinder, in which the working piston 17 is fixed with a rod 9 passing through the return spring 25. 9, the movable wedge 13 is fixed with the end part. A hose is fixed to the free end of the body 16 of the hydraulic cylinder with the possibility of supplying working fluid through it from the pump to drive the piston 17 of the hydraulic cylinder with the rod 9, and pushing prefabricated rods in the form of rods are also fixed. Acoustic emission sensors 11 are located in the upper spacer plate 10.

EFFECT: providing multiple point impacts on the well along its entire length and perimeter.

2 cl, 6 dwg