SU1177482A1 - Method of mining gently-sloping outburst-hazardous coal bed - Google Patents

Abstract

WAY OF DEVELOPING GOGO EXTRACTIVE HGO GO PLASTA, including opening the mine floor in blocks during panel preparation, working out the runways downstream with field drifts and gesenes, airing the runes with a fresh stream through the drift and discharge of the body of the unit. clearing holes, characterized in that, in order to increase the safety and efficiency of the development by concentrating private bottoms in the block, the mining of the Rus is carried out in pairs, the underlying pair of Russ includes in operation with a delay from the reference pressure by the amount of overlying zone and podviganiya lava in a pair is carried out alternately with the advance of the top over the bottom lava.

Description

The invention relates to the mining industry and is intended to develop a flat outburst coal seam.

The purpose of the invention is to increase the safety and efficiency of the development by concentrating the cleaning faces in the block.

The drawing shows the wing of the block inclined floor, General view; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The method is carried out as follows.

Open the mine field in blocks. The air supply trunk 1 and the ventilation well 2 are conducted in the center of the block and the main drift 3 is made on this horizon and in this way a bremsberg and inclined excavation field is created, and then each field is prepared according to a panel scheme and simultaneously work (paired panels) with transportation coal on the total specified main drift 3 (Fig. 1).

In each panel, for example, a slope, field panel inclined workings 4 are carried out and field formation is prepared (Fig. 2). The tiers in the panel are worked by a forward stroke and pairwise double lavas. Each field pinch 5 is advanced ahead of the lava and is connected to it with the aid of geuencs 6 and a sectional drift road 7.

Air Russes are paired by supplying fresh jet to double lava through their average field drift 5 and diverting outgoing jet from each lava through pipeline 8 placed in side field drifts 5, which, in turn, are ventilated by separate supply of fresh stream there and its removal by the same pipelines 8. Moreover, the inlet ends of the pipeline 8 in the form of branching are placed in two gas 6s - in the rear and front relative to the lava (Fig. 3).

The outgoing jet is withdrawn from each preparatory groundwater drift 5 through another pipeline 9, which is connected to a common pipeline network 8.

The lower pair of Rus are included in the work with a lag from the overlying no less than the size of the support pressure zone formed in front of the lava - its adverse effect on the outburst hazard in adjacent lava of the other pair is excluded.

A fresh jet is supplied to the dual lavas and the outgoing jet is discharged from them in a similar way; however, the pipelines of 8 adjacent lavas of adjacent pairs are laid along their common side field drift 5.

The cutting of lavas (Fig. 5) is carried out by conducting a common split furnace 10 in alignment with one of the field panel inclined openings 4 (in the discharge zone of the formation with this output), and then they are worked out by conducting cleaning operations with this split furnace 10 in both directions.

Movement of lavas in a pair is carried out alternately ahead of the upper lava over the lower one. The coal excavation, for example, in the lower lava, makes it possible to intensify the redistribution of bearing loads and the degassing of the bottom-hole zone of the upper lava stopped for this period, and vice versa during the transition to coal excavation in the upper lava. In this way, a protective zone is created in the near-bottom part of the reservoir, which makes it possible to refuse time-consuming and unsafe local measures in the lava, for example, by injecting water into the reservoir through wells.

Putting into operation a neighboring pair of lavas provides an increase in the concentration of clearing faces in the block and, with this alternate movement of the lavas, at least maintains the load on the block and thus ensures the effectiveness of such a safer and less labor-intensive measure to control emissions in the lavas. Due to the proximity of lavas in a pair and their consistent work, it is possible to transport coal from upper lava through the bottom lava face conveyor to its transport field drift 5 — the concentration of cargo flow is carried out.

The invention can be implemented both at the construction site and at the existing mine (Fig. 1).

At the existing mine (it does not necessarily have to have a block diagram before opening) another block on the outburst formation is opened, prepared and worked out in a new way. The block may contain, if necessary, only one excavation field - bremsberg or bias.

FIG. 2

FIG. five

Claims (1)

METHOD FOR DEVELOPING A GAY EMISSIONING COAL - GO PLASTY, including opening the mine field with blocks during panel preparation, straightening the tiers with field drifts and gozenki, ventilating the tiers with a fresh jet through the field drift and draining the outgoing lava from the lava through the pipeline and coal extraction with treatment faces, characterized in that , in order to improve the safety and efficiency of development by concentrating the working faces in the block, mining of tiers is carried out in pairs, the underlying pair of tiers is included in the work with a lag of overlying zones of reference pressure, and the movement of lavas in a pair is carried out alternately with the advance of the upper lava above the lower. S Figure 1 SU .... 1177482