SU1434108A1 - Method of exploiting thick steep coal seams - Google Patents

Abstract

The invention relates to mining and allows the transfer of mining equipment from one lane to another without assembly and dismantling. A steep coal seam is developed by two or more sloping layers, each of which is processed by horizontal stripes (HP) in a descending order with a hardening laying of the goaf. Coal extraction in HZ is carried out using self-propelled mining equipment. Spent PT is fixed with reusable metal arch support. One of the flanks of the excavated floor, limited by slopes, is equipped with a mechanized lining (MK). The MK sections are located in the niche below the developed PT so that the overlaps of the MK sections are at the level of the soil of the developed GPs. After the coal has been dredged in the upper HP, the mining equipment is lowered into the underlying M1 on the overlaps of the MK sections. Before this, the fastening of the spent GP is dismantled, it is lowered onto the GHZ soil, leaving a ventilation cavity between g lowered arches onto the soil and the soil, then a waterproof film is laid on the archs and the HP hardening mixture is applied. The excavation of coal in the underlying GP begins after the required strength of the filling material has been achieved. As the coal is excavated, a slander is laid on the W, laid on the soil of the underlying soil. Ventilation is achieved through a general depression. 6 Il. CO 4iik CO 4)

Description

The invention relates to the coal industry and is intended to improve the technology of coal mining on powerful steep seams, using the hardening tab,

The purpose of the invention is to increase the efficiency of cleaning works by reducing the volume of installation, dismantling and transport operations for the transfer of mining equipment from the waste strip into shkollezhaschuyu

Figure 1 is a diagram of the development of a strip of an inclined layer | FIG. 2 is a section A-A in FIG. 1; on

fig.Z - section bb in fig 1; Fig. 4 shows the layout of the self-propelled equipment on the overlap of the mechanized fastener after returning it to the phpang of the excavation floor in Fig. 6) - the same, after lowering it to the soil level of the underlying pollen in Fig. 6, the scheme of maintaining the self-propelled equipment in the underlying the strip after exposure to the solidified array in the spent overlying strip.

The method is implemented as follows.

A steep thick coal seam is developed by two or more inclined layers 1, each of which is worked out by horizontal strip 2 in a descending order with hardening laying of the developed space. The coal is dredged in horizontal stripes by means of the se ate mining equipment 3. Ceiling and board the arches are fastened with metal arched hook (not shown)

The extraction field of the section of the reservoir is prepared by two flanking slopes 4-, flanks (excavation floor) in each. The horizontal strip is equipped with sections, 5 mechanized supports, located in niche 6 below the developed strip so that the upper perches of 7 sections of mechanized supports are at the level of the soil of the developed horizontal strip. After the OTp iSoTKH of the next horizontal plane, the self-propelled mining equipment is reversed to the flank of the excavation floor equipped with a mechanized support and the deepening of the next niche below the next floor about CBS is lowered to the soil of this lower band.

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They dismantle, lower it into the soil of this strip, leaving a ventilation cavity between the lining arches and the strip that are lowered into the soil. At the location of the mechanized Kpemjj overflowed with mining equipment, the horizontal strip mount transits along with the clearing flank 5 erecting this support above the equipment in the underlying strip so that the upper arch of the lining coincides with the level of the archs of the lining dismounted and laid on the soil, overlying the strip. Then, a waterproof foam is placed on the mounting strip of the waste strip and the mixture is hardened. After the required strength of the filling material (at least 4 MPa) is reached, coal mining in the strip begins with the help of self-propelled mining equipment reloaded on mechanized support. As the coal is dredged in the strip, the fastener laid on the soil of the overlying strip is restored (racks of rags, pivotally attached to the arches and laid during removal) on the soil of the overlying hollow, are supported on the soil of the overhanging strip, supporting the arches of the overhanging fence. from dumps of rock and coal from the side of enclosing rocks and the adjacent inclined layer).

The proposed method of development allows for the transfer of excavation and supply equipment from one lane to another without assembly and dismantling.

Claims (1)

Formula izbret.eni A method of developing powerful steep coal seams, including the I division of the excavation floor by slopes into sections, working out sloping layers in a descending order by horizontal plates along the stretch using mining equipment, airing the mining faces with local ventilation fans, arched fastening and laying the exhaust mine. removable strips, the transfer of mining equipment in the lower part of the layer, so that, in order to increase the efficiency of cleaning works by reducing the volume The assembly and dismantling and transport operations for the transfer of mining equipment from the spent strip to the underlying, in the process of mining the upper strip, form a niche on the side of one of the ramps and equip it with sections of powered support, and the tops of said powered support are level with the soil of the fulfilled strip, then after working off the upper strip its lining from the niche of the lower The strip before the slope is placed on the soil of the upper strip and the lower strip niche is drilled to form a niche in the upper part of the next strip with simultaneous lowering of the mechanized lining sections, mining equipment and the waste strip over the lower strip niche and combine the level of the arches of the above site. strip with the level of arches lining, laid on the soil waste strip. Thebes. 2 B - C Fig.Z llinrintTirJULl-O FIG. four / / jii 1MI innnnt rir -r-r 7 5 i / e. five milil hh ii q lllll li i Sh / Z   . . /. . . . j. ./ ,. . .. fug.5