SU1448052A1 - Method of underground mining of ore deposits - Google Patents

Abstract

The invention relates to the mining industry and m. used in the development of deposits with contrasting physico-mechanical properties of rocks. The purpose of the invention is to increase the efficiency of development by intensifying the development of the unit and reducing the loss of the useful component. The method is carried out barely. The deposit is opened by a system of underground mountain formations with its division into floors (or panels in the case of horizontal bedding). Then, preparatory workings are made (field and ore drifts) and the blocks are cut - they are excavated. The processed block is filled with beams of descending and ascending wells (C). Between the beams of descending C, horizontal C holes are drilled. After drilling C is charged and jointly blown up by short-slow blasting, which creates a bulk wave of stresses in the block being processed. Blasting and blasting are performed on the compensation gap, the ore is processed by feeding a chemically active substance and releasing the enriched useful component. The release of the useful component is carried out by sequential leaching of the fine fraction of the ore from the main part of the block. to its base by feeding into the block at the beginning of the water in the injection mode. After accumulation of the ore fine fraction at the base of the block, the water supply is stopped. The supply of chemically active substances are first led to the base of the block in the injection mode, and then into the main part of the block in the non-pressure mode. (L 00

Description

The invention relates to the mining industry. N It can be used in the development of deposits with contrasting physicomechanical properties of metal bearing mineral aggregates of enclosing rocks.

The purpose of the invention is to increase the efficiency of development by intensifying the mining of the block and reducing the loss of the useful component.

The method is carried out as follows.

The field, depending on the topography and morphology of the ore deposits, is opened by a system of underground mining works with its division into floors (or panels in the case of horizontal bedding).

Next, preparatory expressions — field and ore drifts — are carried out, after which the cutting is performed by cutting blocks orths, flanking rebels, central rebels, from which additional short drilling lines pass, and the compensation slit is penetrated. Horizontal downhole wells are drilled from drilling orts and upper floor drifts, horizontal wells are drilled from additional drilling orths between downhole wells, and upstream components are extracted from the bottom of the lower horizon.

After drilling, the well is charged; they are blown together by the method of short-delay blasting, which creates a bulk wave of stresses in the block being processed.

After the explosion from the upper drift, the fan of inclined wells is drilled. The ore repulsed when the block is cut is either transported for processing, or used as a bookmark for chambers in the mining area by chamber development systems and then leached.

After partial release of broken ore, a pipeline is mounted in the upper drift directly above the broken ore, and the pipe sections that are directly above the blasted ore are equipped with nozzles of smaller diameter. The release of the useful component is carried out by successive leaching of the fine enriched ore fraction from the main part of the block to its base by feeding it into the block through the pipeline and downhole wells, under high pressure at the beginning of process water, which flushes the fine material, forming; This is caused by the passage of a volumetric dynamic wave of stresses in the array during the blasting of vertical and horizontal wells. At the same time, there is a partial penetration of water into the pores and micro-cracks of the coarse material. MOVIE PLAY 6823/38

Production-Euligrzfkceo

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The process of accumulation of the ore fines is monitored by periodic sampling from a control drainage well. The test well is not equipped with a filter. The remaining drainage wells are equipped with filters made of sorbent material. All drainage wells (including koitrolna) are equipped with caps - packers.

After the accumulation of fine material at the base of the chamber, the water supply is stopped and the treatment with the chemically active substance of the aerated ore begins. la in the lower part of the block in the injection mode with increased concentration. Then the main part of the array is treated with a chemically active substance of usual concentration in filtration-free mode.

After reaching the concentration of the useful component in the solution at a predetermined level (which is established according to the measurements of the control well), the injection irrigation is stopped, the packers are opened and the productive solution is drained with a sorption material. Then the unit is irrigated with reagent of normal concentration and incubated for 10-15 days. The packers are closed again to a corresponding increase in the concentration of the useful component.

Claims (1)

Invention Formula The method of underground mining of ore deposits, including opening, preparation and cutting of ore body blocks, penetration of the compensation gap, drilling of the block under development with beams of descending and ascending wells, charging of wells with explosives, blasting of charges, ore blasting to the compensation gap, processing ores by the supply of a chemically active substance and the release of an enriched useful component, characterized in that, in order to increase the efficiency of development by intensificafikacin block mining and reduce About the component, horizontal wells are drilled between the downhole well bundles and joint blasting of charges in the horizontal and downhole wells create a volume wave of stresses in the block being processed, and the output of the useful component is carried out by successive leaching of the ore fines from the main part of the block to its base. by supplying water to the unit at the beginning in the injection mode, and after accumulating at the base of the fine ore fractionation unit, the supply of water is stopped and the supply of the chemically active substance is first led to the base of the block and in the discharge mode, then the main part of the block in mode depressurised. Circulation 459-Subscription some enterprise, Uzhgo) GOD, st. Project, 4