SU1642011A1 - Method of mining steep coal seams - Google Patents

Abstract

This invention relates to underground mining of coal seams in stripes for rebellion. The goal is to increase the safety of work and reduce the loss of coal. Pass g preparatory and rifled workings. The coal is excavated by hydrofluiding strips along the uprising, and the strips are drilled along the strike. The slaughter is enclosed by a suspended regiment along the normal to the formation. During the coal cleaning operation, the suspended ceiling moves the sections from one flank of the strip to the other as they move. The coal in the cleaning space is delivered along the surface of the shelf. The breaking of coal into the lead is carried out by sections over each section of the shelf, whereby the coal is broken over each subsequent section. after cutting the coal over the previous section of the regiment and lifting it to a height equal to the power of entry f, the Idro monitor is suspended under the previous raised section of the regiment. added for each zzhodki recess after lifting of the outboard sections of the shelf 3 yl (N

Description

The invention relates to the mining industry and can be used in the development of steep coal seams stripes on the uprising with the tab.

The purpose of the invention is to increase the safety of work and reduce the loss of coal,

FIG. 1 shows a general scheme for the maintenance of cleaning operations; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a section bB in FIG. 1,

The reservoir is opened by an intermediate crosscut 1, carried out on the transport horizon, and an intermediate crosscut 2, located on the ventilation horizon. Ventilation drift 3 and mounting

Drift 4 on the transport horizon. The horizons are connected by ventilation and backfill slopes 5 and furnaces 6, the bottom is protected by shelves 7, which are mounted at the level of the transport horizon with a slope of 5 ° towards the intermediate cross-section and normalized to the formation. For kiln-wells 6 from winches, plant t ropes for bottom suspension of regiment sections 7. The coal is dredged in strips for revolt by hydraulic monitors 8 The strips work along strike directions

Carrying out of coal begins by notching from a slope in the area of the intermediate drift along the strike over the first regiment.

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A strip of coal 1.5–3 m thick is taken out. Then the first section of regiment 7 is pulled to the bottom plane and the overhanging coal mass is supported and protected against sudden collapses. Subsequently, as the intake moves, the shelves 7 are moved in sections. Thus, the coal is cut over the second section of the shelf 7 and is also produced by a hydraulic monitor 8, which is moved and suspended under the first section of the shelf. Cutting the coal over the third section of the regiment is done after raising the second section of the regiment, hanging up the hydromonitor 8 under the protection of the second section of the regiment, and so alternately sequentially moving the sections of the regiment from one flank to the other, and dredging the corner over each suspended section of the regiment is conducted hydromonitor 8, located under the adjacent section of the recess (gate power) section of the regiment.

The coal pulp is transported along the surface of the inclined shelf, which provides a drain to the recumbent side of the reservoir, then along the central coal-drain chute 9, after which the pulp enters the pulpospusk pipe 10 and onto the accumulating drift.

After the lifting of all sections of the shelf, gutters and suspension of hydromonitors, when the hydraulic filling method is used, the pulp is fed through a pipe of 11 m and spreads out in the developed space along the clearing face and forms a filling mass all over with a tilt angle of 5 °. Waste water through the drainage furnace 12 enters the local sump. Perhaps the use of hardening bookmarks.

Claims (1)

Airing is carried out at the expense of general depression. A stream of air through the intermediate cutter 1 enters the coal slope, the cleaning face and goes to the ventilation horizon along the slope 5 and through the furnace-wells b. During backfilling and after them, airing along the clearing hole is carried out by Kosovichnik technological development 13. Formula of the invention A method for developing steep coal seams, including clearing coal excavation in revolt strips, fencing the bottom of the suspension shelf along the normal to the reservoir, moving the regiment as you move the bottom, delivery of coal in the clearing space on the surface of the shelf and laying of the goaf, characterized in that, in order to increase the safety of work and reduce the loss of coal, strips the coal for the uprising is worked off by the coal hydrostroke strikes along the strike, the movable shelf is moved by sections in the process of cleaning the coal from one flank of the strip to another, and the coal is stabbed over each subsequent section of the shelf after the coal has been broken over the previous section of the shelf and lifted a height equal to the power of the inlet, while the monitor is suspended under the previous raised section of the regiment, and laying of the developed space is carried out after lifting all sections of the suspension shelf.