SU1617143A1 - Method of mining sloping thin ore deposits - Google Patents

Abstract

This invention relates to underground mining. The goal is to increase the safety of work as a result of their performance without people entering the cleaning space and increasing the flexibility of the chamber pillars, as well as reducing ore losses in the underlying rocks containing useful components, and in belt pillars by increasing the distance between them. The ore massif is processed by blocks. The roadway and haulage passages communicating with it. The ore is excavated by paired diagonal faces, which are mated at an angle to each other in a common apex, which is positioned in the direction of the ore massif. Ore blasting is carried out from the collecting drift or to the drilling drift by means of blasting with counter-directional blasting with its delivery by the force of an explosion into the trench, which is formed in the soil of the mine workings. This trench is formed in the process of delivery of the broken ore through the delivery excavation of the rocks containing useful components in its soil. In the process of creating trenches, they form a tape base in the soil of the goaf, on which they form rows of inter-chamber pillars. The repatriated ore is shipped from the trench and delivered over the delivery development. On the flanks of the block form tape pillars. 2 hp f-ly. 3 il.

Description

The invention relates to the mining industry and can be used in the extraction of complex minerals Ghzl: The purpose of the invention is to increase the safety of work as a result of their performance without people entering the cleaning space and increasing the compliance between chamber pillars, as well as reducing ore losses in the underlying rocks containing useful components, and in ribbon pillars due to the increase in the distance between them. I m

FIG. 1 shows the development scheme.

va in the direction from the drift; on

HRGG:, - - -aFig.Z-p ", is carried out as follows,

After the assembly drift 1 and the delivery development 2 of the latter have been carried out, the ore massif is paired O

1617143

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The unit is operated with blocks, on the flanks of which they form tape pillars. The bottom lines at the intersection form an angle, the top of which is located in the ore body in the direction of the ore massif. In combination with the retreating movement of the sewage front, this eliminates the presence of miners in the

space.

The breaking of ore is carried out by drilling and drilling in counter-directed blasting with delivery of mining rock. the mass of the developed space by the force of the explosion and its laying in the haul / trench formed in the soil. In case of breaking in such conditions of mind1: the scattering of pieces of ore is made and the quality of crushing of the ore from an impact improves. Repulsed ore of delivery of repulsed rock mass in the contours of the delivery excavation / excavation of the underlying rocks in the soil of the excavation forms the bottom of the trench i with the deviation of the sides from the vertical at an angle of repose and the tape base of the trench-like section. on which form rows of interchamber pillars. In this case, favorable conditions are created for the accumulation and subsequent delivery of the broken ore mass. as well as increasing the strength of interchamber pillars 5.

The achievement of the required bearing capacity of the pillars 5 is carried out due to the redistribution of rock pressure, which is due to the compliance of the whole structure of the rear pillar on the ledge. This circumstance allows to increase the frequency of formation of tape pillars

go fossil.

Claims (1)

Invention Formula 1 A method of developing inclined thin and thin ore deposits, including the excavation of an ore massif in blocks, carrying out prefabricated drift and delivery workings, digging ore with paired diagonal edges, matched at an angle to each other in a common apex, breaking ore by drilling and blasting, forming a series of interdigit chambers pillars in the worked space, shipment of the broken rock mass, its delivery by delivery development and clearance of tape targets, with the exception of those. that, in order to increase the safety of work as a result of their performance without people entering the clearing space and increasing the compliance between chamber pillars, as well as reducing ore losses in the underlying rocks containing useful components, and in accurate pillars due to the increased distance between them, ore mining is carried out with the formation of the top of the coal between the holes in the direction of the ore mass, the ore is beaten off with a counter-directional blasting with delivery by the force of the explosion a trench in the soil of the mine workings, to form a The process of delivery is recaptured by poods by haul making by excavating rocks in its soil and form a ribbon base on which a number of inter-chamber pillars are formed. 2 Method. 1, characterized in that the ore massif is worked out modular drift. 3 Method, 1, I distinguish soup and the fact that the ore array work 40 prefab drift. ten 15 20 25 thirty 35 go fossil. Invention Formula 1 A method of developing inclined thin and thin ore deposits, including the excavation of an ore massif in blocks, carrying out prefabricated drift and delivery workings, digging ore with paired diagonal edges, matched at an angle to each other in a common apex, breaking ore by drilling and blasting, forming a series of interdigit chambers pillars in the developed space, the shipment of the broken rock mass, its delivery over the delivery development and the design of the tape pillars, as well as honors. that, in order to increase the safety of work as a result of their performance without people entering the cleaning space and increasing the flexibility of the inner-chamber pillars, as well as reducing the loss of ore in the underlying rocks. containing useful components, and in tape pillars by increasing the distance between them, ore mining is carried out with the formation of the top of the angle between the holes in the direction of the ore massif; ore is beaten off by counter-directional blasting with delivery by blasting force into the trench in the soil of the mine working, which is formed the process of delivery of the broken poods by haul making by excavation of the underlying rocks in its soil and thus form a ribbon base on which a series of inter-chamber pillars are formed. 2 Method. 1, characterized in that the ore massif is processed from modular drift. 3 Method, 1, distinguish shi that the ore massif is fulfilled to 40 prefab roadway. 0 five 0 25 thirty 35  . L I xO "- x / x / xx x / x / / x x x V.-V XX XX XX ./ CHAH . Figg Fig.Z