SU1612082A1 - Method of mining sloping thick ore deposits - Google Patents

Abstract

The invention relates to the development of highly ores. The purpose of the invention is to increase the productivity of mining by reducing the intensity of the destruction of the exhaust workings and reducing the loss of ore during the development of highly disturbed ore deposits. The reservoir is being prepared for development. Chambers are manufactured by ribbons, which are worked out in layers. The developed space of tapes is laid with hardening mixtures. Funnels and bottom workings are formed in the filling array. Prior to the breaking of the tape being worked, a vertical reinforcing layer of ore is drilled at the border with the subsequent tape. Then, an upward shearing of the layers in the belt is carried out. In the top of the layers, the grooves are mirrored relative to the exhaust workings at the bottom of the initial blasting of wells in the center of the excavation and the subsequent blasting of the remaining wells along its perimeter. The release and shipment of ore lead through the development of the bottom with the formation of the ore cushion on the concrete bottom of the chamber. 3 il.

Description

The invention relates to the mining industry and can be used in the mining of strong horizontal and flat ore bodies of great magnitude.

The purpose of the invention is to increase the productivity of mining by reducing the intensity of the process of destroying exhaust workings and reducing the loss of ore during the development of highly disturbed ore deposits.

FIG. 1 shows removable tapes, cross section, vertical section; in fig. 2 shows section A-A in FIG. 1 (on the horizon of production and delivery of ore); in fig. 3 shows a section BB in FIG. 2 (in the working chamber).

The method is as follows.

The reservoir is being prepared for development. The hard-falling powerful ore deposit 1 is worked out with a combined version of the layered system with the laying of the developed space with hardening mixtures. Tape 2 of the latter is processed by this order for medium-disturbed ores. With the transfer of mining operations to subsequent ribbons 3 and 4, the ores in them are identified as strongly broken, which makes it impossible to beat the layers in an upward order because of the danger of collapses into the clearing space. In this case, it is possible to switch to a continuous chamber development system without people entering the cleaning space. For this, in the filling array of the tape 2, the soil passes a transport and delivery drift 5 (TDSH). In parallel with the drift drift, take out the bottom

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a portion of the tape 3 in a known krovleustupnom or soil-access method with the horizontal location of the holes.

After the lower part of the tape has been worked out, the developed space is laid out with a deposit inlet by hardening mixtures with an increased content in the ghost.

From TPS 5 at an angle to it to the middle of the belt 3, races 6 are passed through 12 meters. From the zone of arrival 6 in the chamber, concrete is half-cracked, with the following: followed by the formation of three slopes one angle of repose of the mountain masses.

The concrete that is retrieved as a result of penetration of the GDSh, for driving, cutting the half-funnel, is loaded into the amera prepared for the laying.

Under the reinforced concrete overlap of ore tare 7 along the axis of the edges of the belts 3 and 4, a ventilation drift 8 passes, which is encased up to the border of the belt 2 (i.e., to the “tone”) and cutting 9 is made by blasting followed by cleaning. t the ore massif downsizing with the descending vertical wells; 10, as well as along the ore flange under the Sechka, at the border of the working and subsequent tapes, a number of wells 11 and one of the cable anchors are drilled (to the level of the upper ridge of concrete slopes). Before breaking the tape, cable anchors are introduced into wells 11, a portion of concrete is supplied and, after it has been grabbed, the ropes are strung and the wells are poured to the mouth. In this way, a vertical layer of reinforced beams is formed, which prevents the collapse of the mountain asy from the sides of the chamber to the clearing space.

; After partial shipment of the concrete from the driveway, layer-by-layer breaking up of reserves, sectional explosion of the well is carried out. The stripping of layers is carried out with the formation of recesses in the roof that mirror the bottom half-funnels (the layer of separation of the layer is shown in Fig. 1 and 3 with a dotted line). When wells are initiated, in order to protect the concrete slopes, the central wells of the mirror-like excavation initially blow up to form the heel cavity, and then all the individual cavities around the perimeter are sequentially. The shipment of ore is carried out with the formation of the ore feeder on the concrete bottom, without exposing the concrete padding of the slopes.

After the end of ore breaking

the height of the chamber and the shipment of rock mass using conventional loading and hauling machines (PDM) to clean the bottom and concrete slopes use remote-controlled PDM. When working out the tape 4

The cable anchors of the wells are both removed and, after being rolled through the squeeze rollers, in order to remove concrete from them, they are reused.

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Claims (1)

Invention Formula A method of developing powerful ore-occurring deposits, which includes preparing the deposit for development, mining chamber stocks with tapes with laying the developed space of tapes with a hardening mixture, shaping the craters and bottom workings in the filling mass, and releasing ore through bottom mining, characterized in mining productivity at the expense of reducing the intensity of the process of destroying exhaust workings and reducing ore losses in the development of highly-damaged ore deposits, from breaking down oh the tape at its edge with a subsequent vertical ribbon form uprochnen5 ny layer ore is then carried out the breaking of the ascending belt layers, wherein the recess is formed in the roof, the outlet openings specularly relative to original bottom blasting holes in the center of the recess and then blasting the remaining  boreholes along its perimeter, and shipment of ore is carried out with the formation of an ore cushion on the concrete bottom of the chamber. / / D, /, ... A - .. v7TT7 AL. ft. . . d. X- .. VA i- - A G. . R / / . v7TT7. VA i- // d.2