SU1335702A1 - Method of mining ore in chamber-and-pillar system - Google Patents

Abstract

The invention relates to the mining industry and can be used in the underground mining of powerful and thin ore bodies with the laying of the developed space with a hardening mixture. The purpose of the invention is to reduce production costs and increase productivity. In the powerful ore body, along the roof 2, the cutting openings 1 pass with the simultaneous formation of a guide slope 5 and a mountain mass is dispatched from these openings. With an inclination to the vertical axis, the borehole 7 is drilled at the same time as the ore part of the slope 5. The ore is drilled with thin holes in the thin ore body 8. When the ore is scraped in chamber 10, the ore part of the slope 5 is destroyed by blasting shells in the wells 7 or boreholes 8. When This part of the crushed rock mass J1 is thrown into the frontal under-roof part of chamber 10 and overlaps the neck of the mine with 1 in bulk, preserving and fortifying the rock part 5 of the slope 5. While working the powerful ore body, the ore is shipped from chambers 10 through the neck. When mining a thin ore body, the shipment takes place directly to the floor preparatory workings, coupled with production 1. Then insulators are built (L 1 n 10 .1

Description

lintels. The pedigree part of the escarpment 5, located in front of them, is destroyed and the bulk is formed from the broken rock on the side of the occupied working space.

one

The invention relates to the mining industry and can be used in the underground mining of powerful and thin ore bodies with the laying of the developed space with a hardening mixture,

The aim of the invention is to reduce production costs and increase productivity. .

FIG. 1 shows a diagram of the development of ore chamber-whole system, a cross-section; in fig. 2 shows section A-A in FIG. 1, roof plan; FIG. 3 is a section BB in FIG. one; FIG. 4 is a section B-B in FIG. 2; FIG. 5 is a section on the HGD of FIG. 2

The diagram shows: top production 1, passed on the roof 2, and bottom production 3, passed on the soil 4 ore body; a guide slope 5 formed in the split scraper openings 1, and the scraper 6, by means of which the rock mass is extracted from the latter; wells 7, drilled in a thick ore body, and holes 8, made in a thin ore body; Pike 9 of chamber 10 using ore to be shipped and blast-shattered mountain mass 11; insulating jumpers 12, formed in front of them from the breed part of the escarpment 5 bedding 13, hardening mixture 14 and storey preparatory workings 15,

The method is carried out as follows.

The development is carried out simultaneously in powerful and thin ore bodies or in these bodies separately. In a powerful ore body, the upper split scraper production 1 is passed along the roof of the ore body 2 and at the same time on the soil 4 of the ore body passes the lower split production 3. The ore body of the split scraper production 1 can pass through the blood vessel 10. The developed space of the chambers 10 in the split workings 1 is laid with hardening mixtures. 1 hp f-ly. 5 or

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le 2 and soil 4 at the same time. As the split scraper openings 1 penetrate along the roof 2 of the ore body, they form a guide slope 5 and ship from these openings to the mating of various openings 1 s, with floor preparatory openings 15 by means of a scraper 6. In the powerful ore body of the borehole 7, which simultaneously drills the ore part of the slope 5, boreholes 7 are drilled with an inclination to the vertical axis so that after exploding in their explosive charges, part of the ore flies into the neck 9 of the split scraper production 1. In the thin ore body, the ruts are drilled with holes 8. When ore is blasted in chamber 10, the ore part of the slope 5 is blown up by explosive charges in wells or holes 8 and at the same time part of the crushed rock mass 11 is thrown into the frontal under-roof part of chamber 10 and the neck 9 is closed. Noah scraper making 1 in bulk, while maintaining the breed part of the slope-5, which, if necessary, strengthened. Between the lower split production 3 and the upper split scraper output 1 in a powerful ore body, a cutting rebellion passes (not shown) to which the connection from the upper split scraper output 1 with the ore part of the guide slope 5 is maintained. the bodies, the broken ore 11 is shipped out of chamber 10 through the neck 9, and when mining the thin ore body directly to the storey preparatory openings 15, after ore stripping in the chambers 10, in their necks 9 the insulation is laid lintels 12, moreover, before isolating the worked-out space by stowing lintels 12 in the scraper openings 1, the breeding part located in front of them is from 31335702

Spit 5 is destroyed and a bedding 13 is formed from it, which is then used to form a backfill array in the composition of the hardening mixture 14.

Claims (2)

Formula inventive shadow 1. The method of developing ore is chamber-type, in order to reduce the cost of production and increase in labor productivity, the guide slope is formed in the split production as it penetrates, the ore part of the slope is beaten together with the main ore reserves in the chamber, with the end face a part of the split production is blocked by a mountain-type whole system, including the mass transfer of a part of the ore to it, the separation of the split workings in the roof of the main reserves with a directional explosion, ore body, drilling of wells, explosive blasting ore reserves forming the guide slope for moving ore shipping ore insulation gob erection insulating webs to split workings and hardening bookmark and during the construction of bridges, the pedigree part of the escarpment located in front of them is destroyed and formed from the broken 15 rocks in bulk from the side of the worked out chamber space. 2. Method 1, characterized in that the breeding part. repose as the cutting progresses mixtures of the chamber space, characterized in that that, in order to reduce the cost of production and increase in labor productivity, the guide slope is formed in the split development as it penetrates, the ore portion of the slope is beaten together with the main ore reserves in the chamber, while the end part of the split generation is blocked by the rock mass ore of the main reserves of the explosion directed, and during the construction of bridges, the pedigree part of the escarpment located in front of them is destroyed and formed from the broken rock bulk from the side of the chamber space. 2. Method 1, characterized in that the breeding part. repose as the cutting progresses the workings are strengthened. and FIG. 2 15 9 Fi.d b-in g ge 15 gd A12 and.5 9 15