SU934052A1 - Method of starting a sloping coal bed by entry-driving set - Google Patents

Description

one

The invention relates to the mining industry and can be used to open an outburst coal seam with a tunneling machine.

There is a known method for exposing an outburst coal seam using a drilling and blasting method in the mode of a riot blast 13.

The disadvantage of the method is a reduction in the rate of opening workings, as in the conditions of the mines of Central Donbass, the preparation of new horizons is carried out simultaneously with the extraction of coal, and the increased likelihood of sudden outliers.

There is also known a method for exposing an outburst coal seam using special measures to prevent sudden C2 emissions.

The disadvantage of this method is the high cost of work due to the lack of the possibility of using mechanized conduction.

opening workings without the use of | Blowout measures.

The purpose of the invention is to increase the efficiency of work by preventing sudden outbursts of coal and gas at the site of the reservoir.

This goal is achieved by the fact that the opening output from the minimum distance, at which the stability of the plug is maintained; The bottom of the mine and the reservoir, at intervals, are extended by the executive body of the G10 combine to the whole contour up to the interval in which the outbreak control data indicate its elimination, then they are again transferred to the design cross-section of the mine.

FIG. 1 shows a scheme for implementing the method; in fig. 2 shows section A-A in FIG. one.

Claims (2)

When approaching production of design section 1 to a steep reservoir 2 at a distance of 3 m, considering the norm, whether to the reservoir, an outbreak hazard is predicted at the place of opening of the reservoir in accordance with the requirements of measuring the gas pressure in the coal mass. Then, the harvester 3 implements a further approach to develop design section 1 to reservoir 2 for a minimum distance, at which the rock mass remains stable between the production bottom and reservoir 2. The specified distance is determined by the normal to the plate 2 by drilling exploratory wells and core sampling by the geological service of the mine. After that, the output of the harvester 3 by 0.5 m is extended by weak lateral rocks or by i1 m by strong rocks, calculated from the contour 5 of the output, along the whole contour of the design section 1. At the same time, the distance between the bottom hole and the reservoir 2 is kept equal to the above minimum distance — between the development of the design section 1 and the reservoir 2. After expanding the production, monitor the outburst hazard of the reservoir at the site open by measuring the gas pressure in the reservoir, The cause of the gas pressure decrease during the blow out process is a complex indicator indicating unloading and degassing of the formation. The magnitude of the decrease in gas pressure during the execution of the blowout preventer is a complex indicator indicating the discharge and degassing of the formation. If the gas pressure in the reservoir remains at a level of 10 kgf / cm or more, then the production of the combine 3 will be further expanded by the executive body of the harvester 3, and the interval of the expansion of production will also be within 0.0.0 m, considering design section 1. In the case when the gas pressure in the reservoir is reduced to a level less than 10 kgf / cm, using a combine 3, the rock thickness 4 and formation 2 intersect the design section 1. Using the proposed method can significantly reduce the cost Ata to work along the intersection seams outburst and increase the rate of the workings of outburst layers. Claim Method A method for opening a steep coal seam with a tunneling machine, which includes opening the production section of the project section at the approach to the formation and its intersection, characterized in that, in order to increase the efficiency of work by preventing sudden ejections of coal and gas at the location of the seam opening, revealing the output from the minimum the distance at which the stability of the plug between the bottomhole and the reservoir is maintained is intervalwise expanded by the executive body of the combine throughout the contour, while and each range expansion is performed control of outburst formation, and after the interval in which the control data indicate that elimination of outburst again proceeds to the design section generation. Sources of information taken into account in the examination 1. Instructions for the safe conduct of mining operations on seams prone to a sudden release of coal, rock and gas, M., Nedra, 1977. 2. Technological schemes of preparatory and cleaning works on coal seams prone to sudden emissions of coal and gas. M., IGD them. A. A. Skochinsky, 1976. -L J / CtJu.i Qiuf.2