RU1806267C - Process of combined development of deposit - Google Patents

Abstract

Usage: application in the mining industry to increase the development efficiency due to its intensification, reduction of capital costs, losses and ore dilution and reduction of environmental pollution by explosion products. The essence of the invention: the field is mined by open, open-underground and elevating beds, open and underground channels are mined by open and underground methods, excavation of the open-underground channel is carried out in layers, an entrance and a cut trench pass in each layer, from the sole of the side of the entrance trench pass there is a temporary cross-section towards the hanging and lying sides of the deposit, the layers are excavated by the panels, the drilling workings of the panels pass from the sole-side of the split trench and field drifts, passed from the time For these crossovers, the cleaning recess is carried out by the front and two side faces. Supporting pillars are left on the sides, working loading platforms and transport berms are formed in the process of breaking, cargo is transported via transport communications. 6 ill. with

Description

The invention relates to mining and can be used while conducting open pit and underground mining of ore deposits.

The aim of the invention is to increase the development efficiency due to its intensification, reduction of capital expenditures for mining, losses and ore dilution, and reduction of environmental pollution by explosion products.

Fig. 1 is a vertical view showing a general diagram of mining operations in a combined method of developing a mineral deposit; on the

FIG. 2 - the same, view 1; in FIG. 3 is a section AA in FIG. 1; in FIG. 4 is a section BB in FIG. 1; in FIG. 5 is a general diagram of a tunneling of opening, pre-cut and mine workings of a layer of open underground underground; in FIG. 6 - start of treatment works in the open-underground layer.

The method is carried out as follows.

A mineral deposit of medium and greater thickness (100-500 m and more) is mined in depth by three beds in the direction of the strike of open reservoir 1 to a depth of 300-500 m,

with

ABOUT

about y

ON

Vj

Gj

open underground 2 - up to 100-200 m and underground 3-1000 and more meters. The mining of open 1 and open-underground 2 layers is led by ledges 4, and underground 3 from underground mine workings 5. The ore is mined in beds 6 with a height in open channel 1 12-15 meters, in open-underground 3 - 50-100 m . In the open 1 channel, opening shafts 7 in the lying side of the deposit and entrance trenches 8 of the external and combined mortar pass, and in the open-underground 2 and underground 3 Rus there is a lifting trunk 9 and auxiliary shafts 10 from the platforms of the ledges of the open sides of the open Rus 1 in the lying and hanging sides of the reservoir. Simultaneously with the sinking of auxiliary shafts 10 at the end of the deposit in layer 6 of the open-underground channel 2, entry trenches 11 run across it and temporary cross-huts 12 from the bottom of the idle side of the trench 11 to the side of the hanging and lying sides of the deposit. Then, cutting trenches 13 are posted in each layer 6 with a length equal to the horizontal power of the worked out part of the deposit. Mineral extraction in open 1 and underground 3 beds is carried out by open and underground methods, and in open-underground bed 2 it is carried out by a cut-off panel 14 along the axis of the deposit and the side panels 15 along the flanks of the cutting panel 14 with a width of 50-60 m in each layer 6. In this case, the cutting of the drift 16 of the cutting panel 14 is carried out from the working side of the cutting trench 13 and the drilling unit 17, after the field pieces rivers 18 in the lying and hanging sides of the reservoir and drilling unit 17 of the side panels 15 between them from the temporary crosshairs 12. The treatment excavation in the open-underground channel 2 is carried out by the front 19 and side 20 faces and form supporting pillars 21 in the sides channel 2. The formation of a cutting gap is carried out in each layer 6 of an open-underground channel 2 by digging a cutting trench 13 and mining the front face 19 of a cutting panel 14. Blasting by drilling and sectional blasting of the rising fans of wells 22 in each layer 6 in the side 15 and cutting 14 pane x is produced concurrently with the formation of working loading bays 23 and transport berms 24. Moving chipped minerals is carried out at 25 m transport communications in a temporary decontamination space open tier 1 and shipping packing material 26 - for transport communications 25 m,

27 in the temporary clean space of open 1 and open-underground 2 Rus.

An example implementation of a combined method of field development

is given in relation to the conditions of open pit No. 1 of the Central Mining and Processing Combine (TsGOK) of the Kryvyi Rih iron ore basin. The quarry worked out to a depth of 280 m from the horizon +100 m, has

0 4 km long and 1.5 km wide. The mineral deposit is represented by a retinue of steeply falling stratiform ore bodies (glandular horizons) with a thickness of each from 15 to 200 m. It is supposed to mine the deposit in an open way to a mark of 180 m, open underground to a mark of 300; -310 m without separation of the quarry sides and the underground and lower elevations of the open-underground channel. The parameters of the open-underground channel are as follows: along a strike of 1500 m, across a strike of 280-300 m and a depth of 120-130 m.

For open pit mining, it is necessary to extract 60 million m3 of rock mass from the open pit. After that, from the bottom mark of the pit bottom, they begin to carry out entry trenches across the deposits and cut a trench with a length equal to the horizontal power of the worked out part of the deposit in the open-underground layer, and with platforms of the ledge of non-working sides of the quarry auxiliary trunks in the lying and hanging sideways to the depth of mining open5 underground underground. The height of the layer in open underground rus is assumed to be 30 m, by analogy with the average sub-floor height during underground work. From the bottom of the inoperative side of the entry trench, a temporary cross-cage is drilled towards the hanging and lying sides of the reservoir. The excavation of the layers of the open-underground channel is carried out by panels with cut-off panels along the axis of the deposit and side panels along the flanks of the cutting panel. Width

5 panels were adopted 60 m, which will allow drilling the panels with commercially available domestic drilling rigs NKR-100 M and others with upward fans with an average well length of 35–40 m in the fan, which

0 is optimal for a given drilling equipment,

The detachable drift of the detachable panel extends from the working board of the detachable panel and the drilling unit after field

5 drifts in the lying and hanging sides of the reservoir and the drilling unit of the side panels between them from temporary crosses. In the process of mining the upper layer of the open underground underground along strike, mining will be conducted in parallel to open,

preparation and treatment mining of mineral reserves in all other 3 layers x. A treatment excavation in an open-underground Rus is carried out by a frontal face with the support pillars left in the sides of the channel and two side faces. The formation of a cutting gap is carried out in each layer by driving a cutting trench and mining the front face of the cutting panel. The rock mass in the quarries is drilled and blown up by the rising fans of the wells; at the same time, working platforms and transport berms are formed on which commercially available mining machines, excavators EKG-4, EKG-8I, EKG-12, etc. .,. dump trucks Bel. 75-19, ND-1200; Bel. 548. In order to reduce transportation costs, it is advisable to use dump trucks or other vehicles within the developed layer using a short-shoulder scheme. The recaptured mineral and backfill material is transported via transport communications in the temporary treatment space of open and open-underground Rus.

As a result of mining the deposit using the combined method of the invention, having extracted 110 million tons of iron ore, open-underground Rus will reduce the volume of overburden operations by 100 million m3 in open Rus, and from 26 million m3 of incidentally recovered waste rocks, into open Underground Russe, a significant part of this volume will be stored in the developed space, without moving beyond the quarry.

The invention can be used while conducting open and underground mining of medium and high power ore deposits using standard mining equipment.

Claims (1)

The claims A method for the combined development of deposits, including the development of open, open-underground, and underground beds, the opening of opening trunks, entry trenches in the first Rus, the drilling of auxiliary and auxiliary shafts in open underground and underground Rus, the formation of production of the concentration horizon, temporary crosscuts , split trenches, platforms for ledges of non-working boards of an open channel, field drifts, transport berms, drill drifts, ortov, detachable drifts, loading docks and transport communications, ore excavation in Rus, layers of open and open-underground ore mining with ledges, and underground ore from underground mine workings, a treatment excavation in an open-underground river without separation of sides with the formation of a cutting gap, ore breaking into drilling and sectional blasting of ascending and descending wells, moving, releasing and shipping off recaptured minerals, forming a single temporary treatment space and delivering filling mines into it material, characterized in that, in order to increase the development efficiency due to its intensification, reduce capital expenditures for mining, losses and ore dilution and reduce environmental pollution by explosion products, an entrance trench is carried out in each processed layer of an open-underground ore the end of the deposit stretch across it, and the temporary cross-bars from the sole of the idle side of the entrance trench and to the side of the hanging and lying sides of the reservoir, while at the same time auxiliary trunks pass into and on the lying sides of the deposit from the platforms of the ledges of the non-working sides of the open Rus to the level of open-underground mining, the cutting trench in each layer of the open-underground Rus is carried out with a length equal to the horizontal power of the worked out part of the deposit, mining of minerals in the open-underground Rus they are carried out with a cutting panel along the axis of the deposit and side panels along the flanks of the cutting panel, while cutting the drift of the panel is carried out from the working side of the cutting trench and drilling units After the field drifts are carried out in the lying and hanging sides of the reservoir and the drilling unit. The side panels between them are made from temporary crosshairs, the cleaning recess in the open-underground Rus is carried out by the frontal and two lateral obliques and form supporting pillars in the sides of the Rus, and slots are carried out in each layer by cutting a trench and working off a cutting panel with the front face, sectional breaking of minerals in each layer in the side and cutting panels is carried out simultaneously with By working and loading platforms and transport berms, the recaptured mineral is transported via transport communications in the temporary treatment space of an open excavation, and delivery filling material is carried out through the open treatment space through open-sub-transport communications in temporary and open Rus.  / 7 6 12, -Up Gs. thirteen Vh × i / I 1;  h / p i W / yy Kji J ---, --- t A Jss SЈ & xx „m c ---- - g FIG. 5. b Ј 12, . N h / W / yy Kji W tf "Nbd, - A , - T (I / gm 12x 1 -gD |;