SU1317127A1 - Method of mining mineral deposits - Google Patents

Abstract

The invention relates to the field of mining and allows to increase .- :: -l- /; 1 efjue.I work safety by reducing the stresses in the columnar pillars, as well as ensuring a more complete recovery of reserves. Minerals are taken out in layers. In the layers, coaxially arranged column ore pillars 9 are formed. When excavating the reserves of each layer as pillars 9 are formed, discharge wells 10 are drilled at their bases. The developed space is filled with filling material. After complete processing of the ore reserves and installation of insulating bridges, the wells 10 are charged. After reaching the required strength with the necessary strength, the wells 10 are blown up in each layer. As a result of the explosion in the pillars 9, zones 12 of pliability from crushed ore are formed. The ore is produced after processing the block to its full height. 4 il. (L: about h 4d vj 12

Description

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The invention relates to mining and can be used in the development of mineral deposits with the laying of the goaf.

The purpose of the invention is to improve the safety of work by reducing the stresses in the column pillars, as well as a more complete extraction of reserves.

Fig. 1 shows a scheme for mining block reserves (section A - A in Fig. 2); in fig. 2 - a plan of mining in the layer (section BB in FIG. 1); FIGS. 3 and 4 of the pillars grounding patterns for creating compliance zones when the layers are dredged from bottom to top and top to bottom. FIG. 1-4 are marked with 2 inclined transport exit 1; sublevel drift 2; zentyl rational bookmark 3; ventilation backfilling 4; layered race 5; ventilating-backing-bed connection 6j in the space of the 7th layer; notching 8; columnar bench 9; holes 10 (wells); insulating jumpers 11; 12 zones of compliance.

The method is carried out as follows.

The preparation and cutting of excavation sections (blocks of panels) within the substage (floor) are carried out by a transport inclined exit 1s with sublevel drift 2, ventilation but with stowing drift 3, ventilation with staggered rising 4, layered races 5 and ventilating - inlay layer layings b. The ore is dredged in the layer is chamber-pillar or continuous systems. As a result, the ore is dredged, a cleaning space 7 and a notch 8 are formed between the temporary columnar ore pillars 9, In some cases, for sectioning the railway 7 th space between embossments 8 is removed entirely 9 s delay, the Parameters cleaning space 7 ,, embossments 8 and pillars 9 prinimadot depending on the specific geological and mining and technical conditions. In the case of laying out the developed space with hardening mixtures, the excavation of the layers is carried out both from the bottom up and from top to bottom. When using non-stabilized (friable) bookmarks, the layers are worked upwards from the bottom up. As the reserves of ore in the layer and the formation of columnar

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pillars 9 in the top (seizure of layers from top to bottom) or in the lower part (seizure of layers from bottom to top) pillars 9 drill t-holes (wells)

10. The drilling of boreholes 10 is carried out after the ore reserves in the layer have been completely worked out and the necessary isolation jumpers 1I have been installed. When mining the layers from the bottom up and using

loose bookmarks before charging

boreholes 10, pillars 9 are wrapped in a mesh that will prevent the filling material from penetrating into the ore. The mesh can also be used in the case of using hardening as a filling material: their mixtures. After installation and removal of the explosive network to a safe place, the worked space of the EOT layer with backfill material (hardening mixture or loose bookmark). The explosive charges of explosives in the holes 10 are made after the bookmark has reached the required strength.

explosives of explosives in boreholes 10 in workshop 9 give rise to 12 zones of crushed ore, which excludes the concentration of stresses in 9 during the extraction of layers,

since the deformability of crushed ore is practically the same as the deformability of the filling material. With this method of mining, mining safety is improved. In addition to TorOj, the systematic creation of ductility zones 12 in the pillars 9 on each layer allows for the qualitative dismantling of the pillars 9 throughout their height. The production of broken ore from the pillars 9 is carried out after the block has been worked to its full height and penetrations under it - Within the block, ore production is carried out in a retreating order, laying out the cut-out area following the end of the ore output from the corresponding pillar 9. In this case, the depth of the excavation is high and the minement is low. strand, due kachestvennomudrobleniyu since zone 12 creates compliance in each tsel1-1ke 9 on each layer.

Claims (1)

Invention Formula A method for developing useful HCKonaef ibiXj deposits including 313 mineral storage, blasting of reserves by drilling and blasting operations, formation of coaxially columnar ore pillars in the layers, laying of the mined-in space, and refining of targets, characterized in that, in order to increase work safety by reducing stresses in the columnar pillars, and more complete extraction of stocks, when excavated for 274 As the columns of the column pillars pass through each base, the discharge wells are drilled, then the developed space is filled with filling material and, after the packing has reached the required strength, by blasting the relief wells in each layer. create a zone of compliance in the pillars of crushed, shredded. fi & 2 Tszig.Z fig a