SU1420160A1 - Method of combination mining of mineral deposits - Google Patents

Abstract

This invention relates to the mining industry. The purpose of the invention is to increase the development efficiency by reducing the loss of the mineral by engaging in the extraction of marginal ore reserves and preventing the shift of the non-working pit board (K). Pass underground transport and

Description

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final workings. To carry out drilling operations in the marginal area at the level of the lower mark K, under the non-working side, form a technological space 6 to the height of the ledge K with the formation of columnar supporting pillars. The ore massif of the upper underground floor is filled from the indicated space with 6 downward wells 8 and beat sectionalized by blasting borehole explosive charges from bottom to top. The cutting is first performed from the side of the side of which to the border of the zone of displacement of the bead K with the formation of a single cleansing space.

The invention relates to the mining industry and can be used in open-pit and underground mining of minerals under the sides and outside of the open-pit contours.

The aim of the invention is to increase the development efficiency by reducing the loss of minerals by involving in the mining of marginal ore reserves and preventing the non-working pit board from slipping.

FIG. Figure 1 shows the longitudinal section of the contoured section; in fig. 2 shows section A-A in FIG. 1 (across the edge of the margin); in fig. 3 - plan of mining operations under the board and behind the pit contour. .

The method is carried out as follows.

First, the field is mined openly to border 1, then the subculture reserves of mineral resources are mined underground, with the formation of a single clearing space 2. In the open pit mining, open pit mines remain in the face parts of the open-pit mines. It is inexpedient in view of the increase in the boundary coefficient of the supremacy and the withdrawal of valuable fertile lands. For their refinement, the previously formed under the bottom

between K and the underground floor. Then the blasting is made from the side of the recumbent side to the specified border with the formation of a single cleansing space between K and the underground floor and the formation of the clearing spaces formed of the belt supporting pillar 9. After that, the ore mass is fought off behind the displacement zone in the contours of the clearing spaces formed with the maturing of the pillar 9 along its longitudinal axis. Repulsed rock mass produced through underground workings. 3 il.

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open pit cleaning space 2 continues to develop in the direction of the occurrence of marginal deposits under the board 3 and beyond the contour 4 of the pit. For this purpose, the transport and exhaust horizon existing under the pit bottom is lengthened to the side of the marginal reservoir, then the deposit is cut by the outflow deflectors 5. For drilling operations in the marginal section at the bottom of the pit 1 to the height of the quarry - the column development system forms the technological space 6, from where the quarry drilling machines 7 drill downhole wells 8 to the depth of the cleaning space corresponding to the bottom of the quarry. The delivery of drilling rigs, as well as loading equipment from the pit area, is carried out by drilling galleries, passed from the quarry to the drilling zone 6 of the drilling horizon. In order to prevent the non-working pit board from moving along the center of the near-shore deposit, the belt pillar 1 of 9 from the mineral is left, and the width of the pipe to the boundary of the zone of displacement in the area is 1.2-1.5 times wider than the zone of displacement. Mineral excavation in the marginal zone is carried out in stages, first from the hanging side of the marginal deposit 11 to the boundary of the displacement zone, then

from the side of the recumbent side 12 of the marginal deposit. The breaking of the mineral deposit that lies directly under the pit wall to the boundary of the displacement zone both from the side of the recumbent side and from the side of the side of which at the adjacent deposit is conducted by charging the explosive charges 13 with sections 13 upwards. In some cases, squalls 14 and the ceiling of the marginal area and the berms of the career ledges are fastened with metal cables to attach the side of the quarry from the berms of the quarry ledges. After that, the ore massif behind the displacement zone is fended off in the contours of the formed clearing spaces with involvement of the tape rear sight along the longitudinal axis into the dobmu part. Formulas and inventions

The method of combined development of mineral deposits, including the sinking of underground transport and exhaust floating operations, the ore massif of the upper underground level being drilled by wells from the pit bottom mark, blasting of the ore massif by blasting of explosive borehole explosive charges, and the release of rock mass through underground workings , about tl and -

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due to the fact that with a chain of development efficiency by reducing the loss of minerals by involving ore reserves in mining and preventing the non-working pit board from slipping, they form a technological space before the ore mass at the lower grade of the pit below the non-working board a quarry with the formation of columnar supporting pillars, ore Tsassk in the mine from the specified space and beat off by sectional blasting of explosive charges from bottom to top and Started from the side of the side to the border of the pit moving area with the formation of a single cleansing space between the quarry and the underground floor, and then from the side of the recumbent side to the specified border with the formation of a single cleansing area between the open pit and the underground floor and the formation between the formed clearing spaces belt support pillar, then beat off the ore massif behind the displacement zone in the contours of the formed clearing spaces with the redemption of part of the belt pillar along its length flax axis.

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Claims (1)

Claim A method for the combined development of mineral deposits, including the excavation of underground transport and 25 mine workings, drilling the ore massif of the upper underground floor with wells from the bottom mark of the quarry, - breaking the ore mass by blasting explosive bore charges and discharging the rock mass through the underground workings, about t l and under the idle side they form the technological space to the height of the pit ledge with the formation of columnar supporting pillars, the ore mass is drilled from the specified space and they are beaten up by sectional blasting of borehole explosive charges from the bottom up, first from the side of the hanging side to the boundary of the pit side shift zone with the formation of a single treatment space between the pit and the underground floor, and then from the lying side to the specified border with the formation of a single treatment space between the pit and the underground floor and the formation between the formed treatment spaces of the tape support pillar, after which the ore mass is beaten off behind the displacement zone in the contours formed by the treatment s maturing spaces pillar rod portion along its longitudinal axis. FIG. 7