SU691568A1 - Method for the mining of thick smoothly sloping coal seams - Google Patents

Description

(54) METHOD FOR DEVELOPING POWERFUL PROPOSITION OF GAS-COBAL COALS

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The invention relates to the mining industry and can be used in the development of powerful flat gas-rich coal seams.

There is a method of developing powerful flat gas-rich coal seams, which includes carrying out two side openings at the NIGHT) stratum and two fronts, outgoing openings at the 1-fli.plast and reproducing:

dl.

There is also known a method of developing powerful flat gas-rich coal seams, which includes carrying out side workings near the soil of the seam and at the site of the bloodstream and excavating the latter with a ground-access slaughter 2.

However, both of these methods are not effective and safe.

The purpose of the present invention is to eliminate these drawbacks. The goal is achieved by the fact that, prior to the approach of the clearing slab from the excavation, passed by the soil of Pyastá,

the roofs of the latter drill the rising sky gin at an angle not less than the angle of repose towards the clearing slab and as far as the dead end part of the slab is above the mine covered by soil; reservoir, open these wells.-,

The method is as follows. In preparing the excavation pillars, two side workings are made: one at the ground

0 layer and one at the roof of the layer. The development of the reservoir lead soil slaughter. Prior to the approach of a cleaning zayo, from the side workings, passed by the soil of the reservoir, before its roof, a drill was repaired at an angle not less than the angle of natural slope towards the clearing slab, in the bottom of the bed, the wells drilled they tear down, providing the most efficient, ticking dead-end parts, which allows to improve the efficiency and safety of the development. 3 fruits of the invention of the development of powerful gently flat coal fields, including the conduct of side workings in the soil of the reservoir and the roof of the reservoir and the excavation of the bottom with a ground access hole characterized by the fact that in order to improve the efficiency and safety of the development slagging without excavation, traversed at the Soil Pitch, to the roof, the last one is drilled by revolving wells at an angle not less than the angle of repose in the side of the clearing flank and as the 684 reservoir is dredged at the Dead End by drilling, pruyudonnoy from the Gyuchva reservoir, open these wells. Sources of information taken into consideration. Upon examination 1.Krylov V.F. et al. From the experience of the development of flat gentle beds, M. Ugletekhizdat, 1959, p. 127-131. 2.Datskov, V.I., et al. Technologists for excavating a thick, flat layer with a soil grab form. Technologists and mechanization of the development of thick seams of gentle fall. Proceedings KNIU, vol. 48, Karaganda, 1974, p. 26-27 (prototype).