SU1701914A1 - Method of mining mineral deposits - Google Patents

Abstract

The invention relates to the development of deposits with the collapse of mineral and host rocks. The goal is to increase the efficiency of development by concentrating mining in the block, improving controllability by lowering the floating ceiling and reducing the loss of mineral in the ceiling. Passing and securing cargo-delivery, storage and ventilation outlets. Form a floating ore ceiling with a flat bottom surface. Passing loading and additional workings in the ceiling intersection each other with the combination of their soles with the flat bottom surface of the ceiling. The walls of adjacent workings combine along the entire length of the block. A flexible ceiling is formed by a combination of lining loading and storage accumulation and ventilation openings of the ore ceiling in a single structure and the redemption of the ore ceiling above the specified excavations with the output of broken ore into these excavations. The mining of minerals is carried out in a compressed environment under a floating ceiling. Crumble down over rocks. In the bottom of the loading and hauling workings form longitudinal trenches with supports from the destroyed work between the loading and hauling workings. Shipped off repaired mineral reserves are shipped through the soles of loading and hauling, accumulating and ventilation workings from trenches in layers below the bottom surface of the flexible floating ceiling. As a result of the stock loading, the bending of the ceiling lowers. 3 silt and “ima | L“ vj o

Description

FIELD OF THE INVENTION The invention relates to mining, in particular, to the technology of underground mining of deposits with a system with the collapse of mineral and host rocks.

The purpose of the invention is to increase the efficiency of development due to the concentration of mining operations in the block, improving the controllability of lowering the floating ceiling and

reduction of mineral losses in the ceiling.

FIG. 1 shows a zalech across the strike in the stages of preparation, cutting and cleaning the excavation of the sub-floors, a section; FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

The method is carried out as follows.

about

-

J

;

In the deposit 1, the haulage drifts 2 initially pass, and of these, the ore-dumping 3 and block ventilation rebels 4. On each sub-floor of the filling 3 and ventilation 4 retractors, the connecting lines 5 and 6 pass to contact with the deposit 1, and of them, drill drifts 7 are made. Of the latter, ventilation shafts 8 are passed before contact with the lateral side of the reservoir 1. Ventilation drifts 9 are wired under the hanging side of the reservoir 1, Block ventilation ventures 10 are passing from drifts 9. Drilling and charging of vertical fans of wells 11 in an array of blocks (pan s) is carried out from the drilling drifts 7. breaking unit array (bar) is produced by t potolochinoy floating on the waste space filled caved host rocks 12 (sandwiched in medium) or on the compensation space (not shown).

Floating ore ceiling with a flat bottom surface is formed using known methods. The thickness of the ore floating ceilings is assumed to be minimally acceptable under the conditions of safe penetration of loading and hauling workings in the lower part. It is equal to 5 m and consists of the sum of the height of the workings covered in this ceiling (3 m) and the thickness of the rear sight above them (2 m). The ore floating ceiling is cut using known methods, passes from ports 5 and 6 and accumulates drift 13 in it, from which the loading and workings 14 pass along each other to the other with the flat bottom surface of the ceiling. as well as with the combination of the neighboring walls of the supports of adjacent loading and hauling workings along the entire length of the block (panel). The ventilation drifts 15 pass from the workings 14. In this case, the stands of the adjacent frames of the supports of the workings 13, 14 and 15 of the ore ceilings are connected by means of devices that allow vertical displacement of the adjacent frames of the supports relative to each other. When the loading and hauling 14 and ventilation 15 workings are completed, the lining of the ore floating ceiling is drilled through the windows in the upper part of the lining by shpurah holes, they are loaded with explosives and destroy the ore floating ceiling array. At the same time, the destroyed ore is released through the windows in the lining of loading and delivering 14, accumulating 13 and ventilation 15 workings and delivered to the ore-dumping rebellious 3. Thus, an artificial, flexible, floating ceiling is built, including 13, 14 and 15 connected in one frame of the support lining. Then, the destroyed mineral is released from the upper part of the cleaning space 16 through the soles of the loading and delivery 14, accumulating 13 ventilation 15 workings under artificially lowering The flexible floating ceiling and deliver it through the accumulating drifts 13 and the sludge 5 to the ore-and-mining uprising with 3 scraper installations, loading and transport machines or other means. Depending on the loading and hauling equipment used and the capacity of the block (panel), several ore-dumping uprisings 3 or an ore-dumping slot (not shown) pass. Cleaning of minerals from the soles of loading and delivering 14, accumulating 13 and ventilation 15 openings is done in layers. The sequence of cleaning the layers and their thickness in each excavation 13,14 and 15 is determined depending on what position in the cleaning space you need to give an artificial additional floating ceiling. When loading and transporting the mineral in the bottom of the loading and hauling workings 14 in the loosened minerals under the workings 14 form longitudinal trenches with inclined walls, resulting in between workings under the lower surface of the artificial ceiling under the supports of the lining, form longitudinal (trapezoid in cross section) supports from ruined ore. Under the influence of the weight of the overlying strata of rocks 17 and the floating ceiling of the support, as the rock mass is removed from the trenches, they are destroyed with the extrusion of the loosened mineral into the formed trenches and the lowering of the artificial ceiling. The extruded loosened mineral is shipped in layers and delivered to the ore-and-smelting rebel 3. In the described sequence, the mineral is excavated under the lower surface of the ceiling from the clearing space 16 and the artificial floating ceiling is lowered.

As the artificial floating ceiling is lowered, the mineral and host rocks located in the soil of faults 5 and 6 and parts of the ventilation drifts 15 located in the array of adjacent panels and adjacent to the ventilation rebels 10 are loosened by drilling and blasting. Received

the rock mass is delivered to an ore-broom rising 3.

During the development of steeply dipping deposits one artificial floating ceiling can be used to develop the section of deposit 1 located under the ceiling for the entire depth of distribution of deposit 1.

Claims (1)

The invention method of mining minerals, including the holding and mounting of loading and storage, storage and ventilation workings, the formation of a floating ore ceiling with a flat bottom surface, carrying out of loading and delivery workings in the ore ceiling with the combination of their soles with the flat bottom surface of the ceiling, breaking mineral reserves in sandboxed under floating ceiling, collapse of overburden, formation of longitudinal trenches in the bottom of internally-haul workings with bearings from the destroyed ore between LHD workings and lowering potolochiny shipment of minerals from the trenches layers below the bottom surface potolochiny wherein. that in order to increase the efficiency of the development due to the concentration of mountain pa6oi in the block, improving controllability by lowering the floating ceiling and reducing mineral losses in the ceiling, loading and hauling excavations in the ceiling go in one another and combine the walls of adjacent workings throughout the center (or block, form a flexible ceiling by connecting latch loading and storage, accumulating and 5 ventilation openings of the ore ceiling in a single structure and the redemption of the ore ceiling above these openings with the release of the recovered mineral in these openings, and shipping The repulsed reserves of the mineral block are produced through the soles of the loading, hauling, accumulating and ventilation workings of the descending flexible floating ceiling. / 7 h 15 Aa Fig 2 g fig.Z