RU1781531C - Device for directed destruction of monolithic objects - Google Patents

Abstract

Usage: in mining and construction for directed breaking of rocks. SUMMARY OF THE INVENTION: the device comprises two expansion cones sequentially and coaxially one after another, sliding cheeks adjacent to the cones, a unit for longitudinal movement of the first cone relative to the cheeks, an explosion source, under the base of the second cone, a spring located between the base of the first cone and the ends of the cheeks of the second cone. The cheeks of the second cone have diametrically opposite longitudinal pinning elements. The second cone is mounted longitudinally relative to the first. 3 ill.

Description

The invention relates to devices for electro-hydraulic rock destruction and can be used in construction, mining and mining.

A device for destroying monolithic objects is known, comprising a pair of electrodes connected to a pulsed current source and a heat-conducting element connected thereto, stretched over an electric plate placed between the electrodes.

The closest in technical essence and the achieved effect is a device for the directed destruction of rocks, including a cylindrical body with windows on the side surface, a charging chamber and a sealant, the sealant is made in the form of packets located at both ends of the housing and is equipped with a spacer mechanism with a lever, the charge chamber is located between the packers coaxially with them. However

The known device is characterized by insufficient efficiency of directed destruction of monolithic objects.

The purpose of the invention is to increase the efficiency of directional destruction.

In FIG. 1-3 shows the proposed device.

The device consists of a longitudinal displacement unit in the form of a guide rod 1, in the lower part of which there is an expansion cone 1. The source of the explosion consists of a hollow cylinder 3 with a sleeve screwed onto it 4. An insulator 5 with a positive electrode 6, which using a coaxial cable 7 is connected to a pulse current generator. Sliding cheeks 8 mounted on a spacer cone 2 are diametrically opposed to each other above the source of the explosion. They have wedge-shaped inner slices 9, longitudinal pinning edges 10 opposite each other and grooves with annular springs 11 connecting VI

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the sliding cheeks 8. The sliding cheeks of the fastening device 12 are located on the spacer cone 13 and have wedge-shaped inner sections 9 and grooves with ring springs 11. The upper part of the cone 13 ends with a cylindrical shank 14. The clamping device is clamped using a face plate and nuts 15, clamping braids of the coaxial cable 7 - using two nuts 16. Between the spacer and the mounting fixture there is a spring 17, and the lower spacer cone 2 is installed with a large base to the source of the explosion and NOSTA movement relative to the upper expander cone 13.

The device operates as follows.

Drills a hole at a given depth with a diameter corresponding to the diameter of the device. Then the device is installed in the hole and its stabbing faces 10 are oriented in a given direction. By tightening the nuts 15, the device is mounted in a hole. Then the device is tightened with the help of the lower nut 16, while the guide rod 1 with the cone 2 is raised, expanding the sliding cheeks 8 until the contacting edges 10 come into contact with the surface of the hole. In this case, the spring 17 is compressed, providing a preload for the spacer. The braid of the coaxial cable 7 is clamped between the lower nut 16 and its lock nut. Water is poured into the hole. A cable from a pulse current generator generates a pulse of the calculated value. The pulse repetition rate is selected empirically. With electrohydrodischarge, an acoustic shock wave and water hammer impact the surface of the borehole and the device. When moving

the rod 1 with the cone 2 upwards during the impulse from the action of the discharge, the sliding cheeks 8 move with the pinning faces 10 in the transverse direction

Claims (1)

direction and implementation of their array, forming a cleavage deformation. The operation of the spacer does not affect the quality of fastening the device in the hole due to the fact that the guide rod 1 moves freely through the fastening device. The spring 17 provides a constant compression of the pinning edges 10 to the array. Tests on rolling monolithic objects showed high efficiency of the device. SUMMARY OF THE INVENTION A device for the directional destruction of monolithic objects, including an expansion cone and adjacent to it sliding cheeks, a unit for longitudinal movement of the spacer cone relative to the sliding cheeks, an explosion source located on the side of the base of the spacer cone, characterized in that, with In order to increase the efficiency of directional destruction, the device is equipped with an additional spacer cone and adjacent diametrically opposed additional sliding cheeks with opposite longitudinal pinning elements located between the source of the explosion and the base of the first expansion cone, a spring installed between the base of the first expansion cone and the ends of the additional sliding cheeks facing it, with the additional expansion cone facing the source of the explosion with a large base and mounted for longitudinal movement relative to the first spacer cone.