SU1461942A1 - Method of mining thick ore deposits - Google Patents

Abstract

The invention relates to the mining industry. The goal is to increase the intensity of mining and reduce the impact hazard for. through the formation of compliance of the dividing pillar. For this, when penetrating the layer-workings at each layer of the ffipy forms, a temporary dividing section is flexible. In this case, the layers are fought off in a downward order simultaneously on both sides of the specified pillar. For intensive mining of the ore deposit and. the formation of a bottomhole mining layer is divided entirely on the panels, and the panels - into strips and supporting pillars. The cleaning works begin in the direction of the cent. Of the working layer to its flanks. The layers in the strips beat off the zakhokash in relation to the dividing pillar, which diverge or descent from each other. The developed space of each layer is laid with a hardening mixture. After the excavation and laying of strips for completeness, the power of the ore body beats off the separation pillar with a lag in time and space in relation to the breaking of the supporting pillars of t 4-yl.

Description

. The invention relates to the mining industry and can be used for the underground mining of ores from flat and inclined deposits of high potential with the use of bookmarks and self-propelled machinery.

The aim of the invention is to increase the intensity of working out of the place of birth and reduce the impact hazard due to the formation of a pliable separation pillar.

Fig, 1 shows a plan of work. plot; in fig. 2 - section A-A on fig. 1, (along the direction of the deposit) j in FIG. 3 - section B-B in FIG. 1 (in the cross-direction of the reservoir) 5, in FIG. 4, section B-B in FIG. 1, (along the separation tube),

The method is carried out as follows.

 In the recumbent side of the deposit on the flanks of the working area, transport congresses 1 are held, from which excavation layers are opened by field heats 2 and ore runs 3, Cutting works at. strip groove

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from top to bottom they consist in carrying out on each layer of layer drifts 4 and backfill drifts 5, ore dug mines 6.

For intensive mining of the ore deposit and the formation of a multi-bottom mining, the layer is divided into entire separation 7 on the panel, and the panel into strip 8 and supporting pillars 9. The cleaning works begin in the direction from the center of the working layer to its flanks. The layers in the strips are fenced off with respect to the separation pillar, with diverging or converging faces. In order to create an artificial roof, the strips are worked out in the strips 10 (the first one is worked out in the strips) and laid with a hardening mixture to a height of at least four meters. The soil of the first inlet is formed at an angle of 6–12 ° from the conventional motion of the moving machines and ensuring the completeness of the laying of the layers. Before laying, the developed space is isolated from other workings with jumpers 11 installed on the layer and backfill drifts. The bookmark is served on the stowing pipes 12, laid on the stowing gateways. As the layers are laid out and the layers are laid in the center of the layer being worked, the cleaning works develop to its flanks. After the required strength has been established, the tab 13 in the strips begins to penetrate the layer 14 of the second turn. The drilling of the rifled workings is repeated for each layer worked. In the process of excavation of the strips, the descending layers with the tab of the developed space in the backfill array form a flexible separating rear sight 7 and tape temporary supple ore supporting pillars 9 which are completely perceived in the initial stage of development. ruzki overlying strata of rocks,

An example of the implementation of the method for software Sevuralboksitrud ,,

The ore body thickness is 20–25 m. The ore reserves in the refinery are 300.0 thousand tons,

The block is prepared for mining by a field road traffic drift and a ramp, from which the races to the ore body are passed. From the motorway gate, ore passes are carried out on each layer.

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The cutting of the block consists in penetrating the layered ore drifts, mortgages and delivery workings, as well as the races to the ore drifts. 5 Cleaning works are carried out in the direction from the center of the excavation site and its flanks. The ore body is broken by horizontal power into - panels separated by a temporary unit. In the first stage, the panels are worked with descending lightly inclined layers of at least 4 m height and the subsequent laying of the developed space with a hardening mixture. In the second stage, the remaining ore pillars, located between the hardened bookmark, are worked out with chambers 4–9 m high with borehole blasting and face release of the ore mass onto the soil of the bury loading workings.

Fastening the roof in all cases (both when removing the layers and the chambers) is provided for sucker rod support. In the second case, when excavating the chambers before blasting, the upper and lower hooks of the recovered ore pillar are made, the upper one is designed to fasten the roof of the chamber and provide ventilation.

Taking into account the complex hypsometry of the underlying rocks of bauxite deposits, significant ore losses are possible in the depressions of the lying 35 side. In this case, developed

the space is partially filled with a hardening tab and the remaining apases are modified by layered development systems,

40 The composition of the self-propelled equipment complex is as follows:

when excavating layers - boring carriages II or III of standard size (minibur or of the same type), bucket loading and transport machines (TsTS-2, PD-3, LK-1, Toro-200D), drilling installation for fastening the roof and charging machine type Ulba or ZMK-.SH,

at the camera exit - small 50 drilling rigs for drilling of the SOLO-A605-PR, NBU-80M, UHF-50E types, PD and LC bucket loading and transport machines, such as the Ulba or ZMK- 55 1M ,.

thirty

Formula of invention

The method of developing powerful ore deposits, including the excavation of layer workings, excavation of useful. HCKOJ-fallen vertical stripes with the formation of temporary supporting pillars between them, breaking the ore in the strips with horizontal onoHMHj tabs laying the developed space of each layer and breaking the temporary supporting pillars after excavating at full capacity of the ore body, characterized in that, in order to increase the intensity of mining and reduce the impact hazard due to the formation of livogo

dividing pillar, penetrating the layered / openings on each layer of the formaritto dividing pillar pillar, the layers beat off in a descending order simultaneously on both sides of the specified column, and the breaking of the ore in the approaches leads to diverging or converging and after the excavation and laying of strips at full capacity of the ore body, they beat off the dividing pillar with separation in time and space in relation to the breaking of temporary supporting pillars.

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Claims (1)

Claim A method of developing powerful ore deposits, including sinking of a layer of 1461942 mine workings, excavation of useful.ncKOj · sourced by vertical stripes with the formation of temporary supporting pillars between them, breaking of ore in stripes with horizontal layers by filling, laying out the worked out space of each layer and breaking temporary supporting pillars after excavation and laying lanes at the full capacity of the ore body, characterized in that, in order to increase the intensity of mining and reduce the impact hazard due to the formation pliable separation pillar, the sinking sloevyh'vyrabotok odds on each layer ¹ miruyut yieldable spacer pillar _5, the layers in descending order of beat off simultaneously on both sides of said pillar, and a stope ore breaking diverging or lead skhodyaschimisya.zaboyami on both sides of said pillar after the recess and laying of strips at full Power of the ore body beat off the separation pillar with a lag in time and space in relation to the breaking of 15 temporary supporting pillars. L> i 12 14 s ξ; l g * ··· 12 14 '9 y 1Q ⁵ Fig. 1 3 9 AA