SU714012A1 - Ore deposit mining method - Google Patents

Description

(54) METHOD FOR DEVELOPING ORE

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The invention relates to the mining industry and can be used in the development of inclined and horizontal bodies in the rocks of the joints, and above the average stability and iodosufficiently stable ores.

There is a method of mining ore deposits, based on the opening and preparation for the clearing excavation of minerals l.

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Also known is the method of developing ore deposits, which includes a trench crossing the chamber, moving the rock from its penetration through the sinking into the underlying trench and releasing the ore into a trench spread by the undercutting chamber 2.

 The disadvantage of this method is the low efficiency of mining the ore body due to the large labor costs of the ore, the release of ore with its insufficient stability and the possibility of premature collapse of the subsurface ore.

The aim of the invention is to increase the efficiency of ore body mining by reducing the labor costs for blasting and production of ore.

The goal is achieved by forming a trench with a width of a smaller chamber width, beating the ore over the trench, then breaking down the rest of the ore in the chamber with vertical layers and supplying it into the trench, and as the layers of the ore are crushed, incline delivery angle of a broken gravity, a series of ore and rock production, with the trench extending the entire length of the chamber at the interchamber pillar;

FIG. 1 shows a vertical section through the fall of the field being developed; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

Claims (2)

The ore body tinfl mines are divided into panels, for the preparation of which the transport field 1, ore 2 37 and boring 3 drifts are carried out. Ore 2 and drilling 3 drifts are connected by connections 4 and 5. The panels are worked out by chambers in ascending order. For the preparation of the chambers, the transport slugs 6 and 7 are passed. By these sluices, the waste rock produced during the formation and expansion of the trench is transferred to the underlying treated chamber. Bonded ore is also released from the trench and mixed by vehicles on the road to the nearest ore pass or to the trunk. For the formation of a trench, the coupling 7 and the drill drifts 3 are joined by rebels 8, traversed at critical angles of movement of the ore under their own weight. A trench of limited width (3-4 m) is placed along the edge of the future chamber. First, the sets of wells are beaten off and the rock is mixed into the working space, then, with bundles of well sets drilled from the drill drifts 3, the ore is taken directly above the trench. Repulsed ore through trench 9 enters the transport horizon, by gravity. Subsequently, the ore in chamber 10 is beaten off by fan sets of wells drilled from the borehole drift 3 using explosion delivery. In order to facilitate the delivery of ore to the trench, its side is cut from the side of processing at the angle of delivery of broken ore by gravity or close to it. him This is done after the ore has been discharged by blasting the fan coalex of wells II drilled from the borehole drifts. In order to ensure the effective use of self-propelled machinery, all transport and drilling workings are interconnected by inclined congresses. The mountain pressure is controlled by ore pillars and bookmark. The proposed method can be used in mines that work out 124 ore bodies of gently sloping ply and incontinuous contact on the lying side and ores that are not sufficiently resistant to 1) slits from below. In such conditions, it provides the possibility of effective use of self-propelled equipment and an increase in labor productivity compared to existing methods. Claim Method A method of developing ore deposits, including driving a trench that cuts the chamber, moving the rock from its penetration through the sinking into the underlying trench and releasing the ore into a trench located under the chamber being worked out, characterized in that labor costs for blasting and production of ore, the trench is formed by a width of a smaller chamber width, beats the ore over the train, then the rest of the ore of the ES ore is processed by the chamber in vertical layers with a blower at a rate not into the trench and as the layers of ore are crushed, inclined layers of the trench beaten off the rocks from the mining side at an angle of delivery of the ore recovery by gravity, the succession of ore and rock production. 2. A method of developing ore deposits according to claim I, characterized in that the trench extends the entire length of the chamber at the inter-chamber pillar. Sources of information taken into account in the examination 1. M.Agoshkov and others. Underground mining of ore deposits. M., Nedra 1966, p. 4O4. 2. Authors certificate of the USSR 512290. k. B 21 C 41 / O6, 1974 (prototype).