SU1580009A1 - Method of mining thick ore zones - Google Patents

Abstract

This invention relates to the underground mining of thick inclined mineral deposits. The goal is to reduce the volume of mining works on rocks for exploration and mining, reduce weed and dilute ore and contaminate the land surface of the waste rock in the chamber-type mining of ore-bearing zones of the nesting structure with a low ore-bearing coefficient. Field floor drifts, orths and rising ones, define the boundaries of the mineralization. At the sides of which the sides pass through the ore that rises from the ore and from it passes the ground-floor drifts in the ore-bearing zone near the sides of which. Of these, subsurface orthors are conducted across the strike of the zone to the lying side rocks. Ore blasting is carried out by blasting explosives in the wells on the cutting-off slots previously passed in the recumbent side at an inclination angle equal to the angle of repose of broken ore. The slots are filled to the height of the substage. Stock removal is carried out within the boundaries of the mineralization with the delivery of ore by force of an explosion into the cleaning space of the chambers. After the frontal release of ore from the chamber in the sublevels, separate nests were made from the pillars. To do this, pass the production to them from the subsurface orts. Nests beat off in the cleaning space of the chambers. The ore from the nests is delivered along an inclined bevel that is formed in the soil of the workings passed in the nests in the direction of the cleaning space. The space is filled with rock. 3 il.

Description

About WITH

The invention relates to the mining industry and can be used in underground mining of thick (over 15 m) obliquely lying ore-bearing zones of a nesting structure with a low ore-bearing coefficient.

The purpose of the invention is to reduce the volume of mining works on rocks for exploration and mining, reduce losses and disintegrate ore and contaminate the surface of the earth with waste rock in the chamber-type mining of ore-bearing zones of a nesting structure with a low ore-bearing coefficient.

FIG. 1 shows the ore-bearing zone across the strike

one floor, vertical section; in fig. 2 is a cross section of L-A in FIG. 1, in FIG. 3 section bb in fig. 1 and 2

The method is carried out as follows.

From the floor field drift 1, there is a floor floor ort 2 up to contact 3 with rocks of the sides of which and from the ore-bearing zone k near the contact 3 block rising 5, from which subsurface drifts 6 come from the sides of which. From drifts 6 to contact with the lying side of the bed 7, subsurface exploration and preparation centers 8 are passed. From the drifts and orts in the ore-bearing zone, exploration wells 9 detect the placement of the ore nests 10 in the ore-bearing zone and contact of the ore-bearing zone with hanging rocks what side. Along the strike, the ore-bearing zone is divided into chamber sections 11 and entire sections 12, in which separate ore nests are located.

After that, in the chamber sections on contact with the rocks of the recumbent side, an inclined cutting slot 13 is formed with an inclination angle towards the enclosing lateral rock rocks equal to the angle of repose of the broken ore, which, after the release of the broken ore, is filled with rock 1 to the height of the substage delivered in the workings of 15 of the tunnel faces or beating off from the pillars 12. With an insufficient amount of rock extracted from the tunnel faces or one-piece openings, the cut-off rock beats the rock of the recumbent side of the deposit, which fills the cutting the gap.

After filling the cutting gap with rock on it with fans of wells 16 drilled from subsurface blocks, the reserves of the chamber section are beaten off with the formation of chambers 17 within the boundaries of the mineralization with ore delivery by explosive force. Repulsed ore 180, released at the ends of the orts, is delivered to the bypass rebels 19t, and the remaining ore is repaired as the front of the refining operation is completed and the descent is transferred to the lower level. After the release of ore from the chambers, a recess of 20 individual nests located in the center

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sections are produced by carrying out workings 21 to them from sub-floor blocks, drilling of well fans

22 and breaking them of ore into the cleaning space of the chambers. At the same time in the soil of the notches 20 wells 22 form a slope

23 to the side of the cleaning area, which ensures the delivery of all ore by force of an explosion.

The developed space is filled with rock.

Claims (1)

Claims of Invention A method of developing powerful ore-bearing zones, including conducting field floor drifts, orts and rebels, revealing the borders of a mineral, carrying out sublevel drifts in the ore-bearing zone near the hanging of the block and from them across the zone of substandard rocks to the bedside side, well boring ore, the formation of a cutting gap, ore blasting on the cutting gap, excavation of reserves within the mineralization with the delivery of ore by the force of an explosion into the cleaning space of the chambers, end ore production on the sub-floors and the filling is worked out About rock space, characterized by the fact that, in order to reduce the volume of mining works on rocks for exploration and mining, reduce losses and dilute ore and contaminate the surface of the earth with rock during chamber-type mining of ore-bearing zones of a nesting structure with a low ore-content ratio The rising one passes at the side of which the sides of the ore form and from it form sublevel drifts, the cutting slot in the chambers is arranged at the side of the recumbent at an angle of inclination equal to the angle of repose of the broken ore, and fill it after the ore is released from the chambers, separate nests are made from the pillars by carrying out workings to them from sublevel orts, breaking them into the cleaning space of the chambers and delivering the ore broken from the nest, which is formed in the soil of the workings passed to nests in the direction of the cleaning space cvi H H SCh1Sif YY 0 cm 11 10 W 15 eight FIG.