SU771335A1 - Method of mining thick sloping coal beds - Google Patents

Description

(54) METHOD FOR DEVELOPING POWERFUL, RAPPED COAL

one

The invention relates to the mining industry and can be used in the development of powerful steep coal seams.

There is a method of developing thick steep coal seams, which includes the mining of the reservoir in horizontal layers in a descending order with the laying of the goaf 1.

There is a known method of developing moide steep coal seams, which includes mining the layer with drifts at the hanging and lying sides in a descending order with the displacement of the layer drifts relative to each other and with laying the developed space with a tapering mixture 2.

The aim of the invention is to increase the development efficiency and intensify mining operations.

The goal is achieved by the fact that the mining of layer shchrek at the hanging of both the lying sides and their subsequent laying are carried out simultaneously and in the same direction, and the layer drifts are shifted to a height equal to 1.5-2.0 drift heights.

FIG. 1 shows a general mining scheme; in fig. 2 - section

PLASTES

A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

The method is carried out as follows.

The excavation field is divided into two wings by the central slope 1: the left 2 and the right 3. The seam is worked with layer slits 4, 5 with a slope towards the flanks of the excavation floor. The levels of drifts of opposite wings shift relative to each other by a height equal to half the height of the drift. AT

10, during the process of working out, layered shtreki are knocked down with each other by taps 6. As the new pling is punched, the local ventilation fans 7 are transferred, and the previous piping is suspended. Fresh air enters the central slope at

15 below the drift and to the fans. The outflow of the jet along the overlying drift goes to the backfilling ramp 8, erected in the tab. The coal is dredged in drifts at the same time and in the same direction by the excavation harvesters 9 with the loading of the mineral into self-propelled trolleys 10. The coal is overloaded from the landing drift to the lower one through the harrow. After cutting the combines

in the drifts of the adjacent wing, the drifts are laid in one direction and at the same time a hardening mixture. For the most effective work in layered drifts, their displacement relative to each other in height is assumed to be 1.5-2.0 drift heights.

This method will increase the efficiency of development and intensify mining operations.

Claims (2)

1. Voloshchuk, S.N., et al. Experience in the application of a development system by top-down layers with a hardening tab and the use of self-propelled equipment. M., “Nedra, 1974, p. 46-55. 2.Certificate of Certificate No. 2624742/22-03, Cl. E 21 C 41/04, 02.06.78 (prototype).