SU1661424A1 - Method for working out closely contiguous disrupted coal seams - Google Patents

Abstract

The invention relates to the mining industry and is intended to develop highly contiguous disturbed coal seams. The goal is to increase the safety of mining operations and to eliminate the process of fixing the cleaning space through the use of lining. For this, preparatory workings are carried out and the layer is worked out in horizontal layers in a downward order with simultaneous excavation of coal from the odd and even layers. The coal in each layer is removed with diagonal stripes (P). Moreover, the longitudinal axes P of even layers are arranged perpendicularly to the axis P of odd layers. In the direction of the longitudinal axis of each P in the horizontal plane overlap stack reinforcing rods. The developed space of each P is laid with hardening material. At the intersection of the P even and odd layers, they are connected by anchors together their backfill arrays. Moreover, the anchors are installed perpendicular to the board P at an interval equal to a quarter of its width. 1 hp ff, 3 ill.

Description

The invention relates to the mining industry and can be used to develop highly contiguous disturbed coal seams.

The purpose of the invention is to increase the safety of mining operations and to exclude the process of fixing the cleaning space through the use of lining.

FIG. 1 shows the preparation of the excavation area; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 2.

The preparation of the excavation section consists of a ventilation drift 1, a haulage drift 2, a water collector 3, ort 4, a coal-boring slope 5. Laying drifts 6 are placed on the recumbent side, on the basis of which a flexible overlap 7 is laid, layers of layers 8 in the left and right

The wings of the block, divided by the coal slope, are shifted by half their height. On the flanks of the excavation block, folding slopes 9 are erected. From the layer drift, the remaining thickness of coal in the layers is dredged by diagonal strips 10 from the line of disturbance. Synthetic pipes 11 are left in the waste strip to ventilate, and a ventilation unit 12 and a kosovichnik 13 are constructed.

In even layers, the longitudinal axes of the strips are arranged perpendicular to the axes of the strips of the aperture layers. At a distance from the soil of the diagonal strip, equal to 1: 8-1: 10 of its height, reinforcement rods 14 are placed overlapped. Anchors 15 are installed at the intersection of the diagonal stripes of odd and even layers.

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The strips are drawn over with a metal gauze 16 and at an interval equal to a quarter of the strip width, they are reinforced with steel-polymer anchors 17. Of the drift layers, the interlayer is strengthened in tangible 18 rocks.

When feeding the hardening bookmark 20, the reinforcing rods, anchors and the backfill array are joined together to create lining tabs, the supporting elements of which are constructed from the side of the diagonal strip being worked out, the backfill array of the spent overlying layer and the backfill array of the waste diagonal strip.

Claims (2)

Claims 1. A method of developing very closely interrupted coal seams, including making development workings and mining the formation in horizontal layers in a descending order while the removal of coal from odd and even layers and laying the worked-out space of each layer with hardening material, characterized in that, in order to increase mining safety and eliminating the process of fixing the cleaning space due to the use of lining, the coal in each layer is removed with diagonal strips, and the longitudinal axes of the strips Even layers are arranged perpendicular to the axes of the bands of odd layers. 2. The method according to claim 1, characterized by by placing the anchors perpendicular to the side of the strip at intervals equal to a quarter of its width. one 4 1 l /// j (// /// /// /// /// /// // ZO 13 /////// / & and /// s // /// 6-5