RU2563004C1 - Method of ore production from thin near-vertical sheet deposit - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: method includes drilling after definite intervals along the strike of the kept ahead process wells limiting the contour of the sheet deposit, the sheet deposit development at single exposed surface by means of work poles, grinding of the sheet deposit rock using the cutting tool connected with the driven stations, the ground rock removal from the work space, and its further removal by the suction device from the kept advanced process well. The sheet deposit is opened by means of the self-moving milling machine and bulldozer after determination of the sheet deposit contour in terms of length and depth of mineralization, at that the sheet deposit core grinding executed with width regulation using the replaceable head of the cutting elements prior to the sheet deposit development is controlled using the automatic system, at that removal of the ground rocks from the work space is performed during grinding by means of the spring-loaded scrapers, and the ground rock is loaded by means of the suction device in the dump truck.

EFFECT: increased capacity of the process of development of the sulphide ores from thin near-vertical sheet deposits, and increased quality of the produced minerals.

4 dwg

Description

The invention relates to the mining industry and can be used in the development of sulfide ores from thin steeply inclined veins.

A known method of mining ore from thin veins using thermal ore crushing. The method includes drilling leading wells directly in the vein at certain intervals, expanding leading wells by using thermal crushing before crushing the core and extracting the crushed ore by suction [1].

The disadvantages of this method are the large amount of drilling, high energy consumption of thermal crushing of rocks, dilution of ore with empty rock due to the lack of selection during thermal crushing of rocks.

A device for developing thin layers of a valuable mineral is known, including drive stations with drives connected by an endless traction chain on which cutting tools are mounted. The device allows you to develop areas of vein deposits with oxidation zones of rich sulfide ores. Drive stations are located in parallel drifts along the strike of a layer of valuable material [2].

The disadvantages of this method are the large amount of work in the preparation of drifts, the need for dangerous and expensive underground work, the use of additional equipment and communications to supply the underground work and the lifting of valuable material to the surface.

The closest in technological essence is the method of mining blocks of facing stone with wire saws. The method includes drilling vertical wells and making vertical cuts at one surface of the outcrop of the rock mass using working racks and removing sludge and abrasive material at the outlet of the rope from the cut using a suction device [3].

The disadvantages of this method are the inability to develop steeply inclined ore veins and low productivity.

The technical result consists in increasing the productivity of the process of developing sulfide ores from thin steeply inclined veins and improving the quality of the extracted mineral raw materials.

The technical result is achieved by the fact that in the method of mining ore from thin steeply inclined veins, including drilling at specific intervals along the vein of the lead of advanced technological wells that limit the contour of the vein, the development of the vein at one exposure surface by means of working racks, grinding the rock of the vein with a cutting tool connected with drive stations, removal of crushed rock from the workspace and its subsequent removal by a suction device from a leading technological well, the overburden of the core is carried out by self-propelled milling and bulldozer aggregates after determining the contour of the core along the strike and the depth of mineralization, while the process of grinding the rock of the core, which is carried out using a width-adjustable by interchangeable nozzles cutting elements before the development of the core, is performed using an automatic system, moreover, the removal of crushed rock from the working space is carried out in the process of grinding by means of spring-loaded scrapers, and the loading is crushed The baked breed is carried out by means of a suction device in a dump truck.

The possibility of forming the required sequence of actions by the proposed means allows us to solve the problem, determines the novelty, industrial applicability and inventive step of development.

The essence of the proposed method for the extraction of ore from thin steeply inclined veins is illustrated by drawings.

In FIG. 1 is a General view of the equipment for implementing the method of mining ore in the working position; in FIG. 2 - preparation of field rocks for opening by a self-propelled milling unit; in FIG. 3 - moving overburden rocks by a self-propelled bulldozer unit; in FIG. 4 - drilling of a leading technological well with a replaceable drilling tool of a self-propelled milling unit.

To implement the method, telescopic racks 1 and 2 are used, which are mounted on self-propelled milling 3 and bulldozer units 4. Drive stations 5, 6 interact with a cutting tool 7 equipped with cutting elements 8 and spring-loaded scrapers 9. The cutting elements 8 are adjustable in width 10 by interchangeable nozzles 11. The telescopic workstand 2 of the self-propelled milling unit 3 is equipped with a suction device 12, including a nozzle 13, a telescopic pipe 14, an unloader 15, a shutter 16, a discharge the target chute 17 with the rotation mechanism 18. The telescopic workstand 2 for drilling leading technological wells 19, 20 is equipped with a replaceable drilling tool 21. The leading technological wells 19, 20, located at certain intervals 22 along the strike of the core 23, limit the contour 24 of the core 23 and the depth of mineralization 25. The development of the core 23 is carried out with one surface of exposure 26. Spring-loaded scrapers 9 are designed to remove the crushed rock 27 from the working space 28. The automatic system 29 is designed to control the mining process. The dump truck 30 is installed under the discharge chute 17.

The method of mining ore from thin steeply inclined veins is as follows.

Overburden of the core 23 is carried out by means of self-propelled milling 3 and bulldozer units 4 after determining the contour 24 of the core 23 along the strike and mineralization depth 25. At certain intervals 22 along the strike of the core 23, leading technological wells 19 and 20 are bordered, limiting the contour 24 of the core 23. Drilling produced by a removable drilling tool 21 mounted on a telescopic working stand 2. The development of the core 23 with one exposure surface 26 is carried out by means of a cutting tool 7, driven by drive stations 5 and 6 mounted on telescopic work racks 1 and 2. The core rock 23 is crushed using cutting elements 8 mounted on the cutting tool 7. Width control 10 of the cutting elements 8 is carried out by replaceable nozzles 11 before the core development process 23. Removal crushed rock 27 from the working space 28 is carried out in the grinding process by means of spring-loaded scrapers 9. Removal of crushed rock 27 is carried out by the suction device 12, through a nozzle 13, a telescopic the piping 14, the unloader 15, the shutter 16 and the discharge chute 17 with the rotation mechanism 18 from the leading technological well 19. The process of crushing the rock of the core 23 is controlled using an automatic system 29. The crushed rock is loaded by means of a suction device 12 into the dump truck 30.

The method improves productivity, reliability and extends the technological efficiency of the destruction of thin steeply inclined veins of various capacities. The method provides a reduction in mineral losses in the bowels, a decrease in the volume of processed rock mass and a decrease in the environmental load on the environment in the mining area due to the selective extraction of the mineral.

Information sources

1. RF patent No. 2332567 dated 08/27/2008. A method of mining ore from thin veins using thermal ore crushing.

2. USSR author's certificate No. 1493781 of 07.15.1989. A device for developing thin layers of a valuable mineral.

3. USSR author's certificate No. 1453011 of 01/23/1989. The method of extraction of facing stone blocks with wire saws.

Claims (1)

A method of mining ore from thin steeply inclined veins, including drilling at predetermined intervals along the core stretch of leading technological wells that limit the core contour, development of a core at one outcrop surface using working racks, grinding the core rock with a cutting tool associated with drive stations, removal of crushed rock from the working space and its subsequent removal by a suction device from a leading technological well, characterized in that the overburden is carried out They are driven by self-propelled milling and bulldozer aggregates after determining the core contour along strike and mineralization depth, while the core rock grinding process is controlled by means of a width-adjustable by means of interchangeable nozzles cutting elements before the core development process, using an automatic system, moreover, crushed rock from the working space is carried out in the grinding process by means of spring-loaded scrapers, and the crushed rock is loaded yayut by the suction device into dump.

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