SU1765418A1 - Adjacent potassium seam mining method - Google Patents

Abstract

Usage: the invention relates to the mining industry and is intended to develop outburst potash strata. The essence of the invention: the bottom layer is worked out ahead of time, and it is processed in two stages. In the first stage, a one-pass chamber passes along the axis of the design chambers and vertical wells are drilled from it into the roof of the upper reservoir, and at the end of the casing of the indicated chamber, the ventilation drift of the upper reservoir is opened with a bore, after which a drift erected a vent jumper from a broken mineral, and in the second stage of the lower reservoir mining, the expansion of the one-way chamber is performed. 6 Il.

Description

FIELD OF THE INVENTION The invention relates to the mining industry and is intended for use in the development of outburst-hazardous potash beds.

There is a known method for developing outburst potash beds, due to which the problem of ensuring the safety of mining operations during the development of a reservoir, in which there is an outburst hazardous bed, is solved. To ensure mining safety, it is proposed to drill drain holes as you move the bottom of the chamber in the roof. This method of ensuring the safety of mining operations requires a lot of drilling drainage holes (wells). Their number is large, since the drainage radius is small. Performance of these auxiliary works reduces productivity of the combine complex.

Closest to the invention is a drift variant of the chamber development system, which includes conducting excavation-transport and ventilation drifts along the upper and lower layers and excavating the mineral with single- or multi-pass chambers. At the same time, from the excavation drift at an angle of 45 ° to its axis, the driveways (cuts) are cut, from which the combine chamber passages pass. This increases the productivity of combine complexes (by reducing the time for notching the cleaning chambers) and increases the safety of mining operations (by reducing the number of matings of the weakly stable roof of chambers and drifts).

In the known method, the issues associated with the undermining of the outburst formation are not solved, and it does not ensure the safety of mining operations.

The purpose of the invention is to improve the safety of mining operations (by preventing the gas workers from mining

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mines) and increased productivity of the combine complex (due to the exclusion of its shutdowns due to an increase in the concentration of harmful gases or the need to carry out mining operations to prevent gas-dynamic phenomena).

The goal is achieved by the fact that according to the proposed method of developing contiguous flat potash beds, including carrying out excavation and transport and ventilation drifts along the upper and lower layers and excavation of the mineral with single or multi-pass chambers, the lower layer is worked out ahead of time, and it is worked out in two stages: in the first stage, a one-pass chamber passes along the axis of the design chambers and vertical wells are drilled from it into the roof of the upper reservoir, and at the end of the said chamber penetration discontinuity vent drift upper layer, after which the one way interface with the camera vyemochno- vehicle drifts erect m vent bridge of chipped minerals, and the second step working off the lower reservoir is produced m the one-way expansion chamber,

FIG. 1 shows the penetration of the chamber along the lower layer; in fig. 2 is a section A-A in FIG. in fig. 3 - penetration of the chamber along the upper layer; in fig. 4 - section BB in fig.Z; in fig. 5 - expansion of the camera along the lower layer; FIG. 6 is a section BB in FIG. five.

When preparing formations, excavation and transport drifts on the upper 1 and lower 2 layers, as well as the ventilation drifts 3, are carried out. The cleaning work begins from the lower layer. Camera 4 is penetrated by a single stroke of the Ural-UKS combine. The airing of the dead-end run is performed by the injection method with a CBM-6m fan. After completion of the first stage of cleaning work on the lower layer at the interface of the chambers with excavation and transport drift, drill with the BGA machine of the well 5 to the top of the upper hard formation, and at the end of the chamber - the ventilation hole 6, which opens the ventilation drift of the upper layer. In the ventilation well b, the injection position of the fan 7 is fixed, and the plugs 8 (Fig. 1) are inserted into the mouth of the remaining ventilation wells (except for the first one, which is adjacent to the excavation-transport drift). Then begin the development of the upper layer. Chambers 9 are fed by a Ural-20KS combine. At the same time when opening the first well we beat off the combine

The ore overflows the lower reservoir chamber, forming a vent jumper 10.

, From the subsequent ventilation wells opened by the combine, the plugs on the lower layer are removed, and on the upper layer are installed. Only one open well closest to the combine was left open (Fig. 2). Through it, the hydrogen sulfide and other harmful substances released in the mine when the ore is destroyed by the combine are removed.

the fan 7 to the vent line of the upper layer. In case of insufficiency of ventilation, a fan of the type CBM-6 installed at the excavation-transport drift is connected.

After the development of the upper layer, the second stage of cleaning works on the lower layer is performed. The chambers are expanded to the design dimensions (FIG. 3). The proposed version of the camera system development

contiguous flat layers allows, when performing cleaning works with a dead-end slaughter on the upper gas-bearing layer, to prevent high gas contamination of the chambers and thereby increase the productivity of combine complexes.

Claims (1)

Invention Formula The method of development of contiguous potash reservoirs, which includes carrying out excavation and transport and ventilation drifts along the upper and lower reservoirs and the excavation of minerals with single- or multi-pass chambers, which distinguishes this and that. that, in order to increase the productivity and safety of mining operations at the outburst hazard of the upper seam, the lower reservoir is worked out in two stages ahead, with the first stages along the axis of the design chambers, a one-pass chamber passes through and from there drilling wells are drilled into the roof of the upper plate, and at the end of the passage of said chamber of the last well they open One upper drift, after which the conjugation of the one-way chamber with the dairy-transport drift erection of the vent jumper from the broken mineral, and at the second stage 1 mining of the lower layer produced expansion of the one-way chamber. + + + + + + At 4-4+ + + + H- + + + 4- .4- j- + -f- + + H- + J 8G + + -H + -f + -b + -AND 5 5 + + + f + + + FIG. 2 1 + + -f + + + + 4- -Ь + + n Fig.Z i FIG. 5 b -BUT ff-ff .- +. ++ + -f + + Fy Jljl ±., + + 4. + + Phage. 6