RU93052901A - METHOD FOR THE DEVELOPMENT OF POWERFUL STEELY FALLING LAYERS WITH AN INCLINED LAYER - Google Patents

Claims (1)

The invention relates to the mining industry and is intended for the processing of powerful steep coal seams during the re-preservation of coal in safety pillars with cast hardening tab. According to the invention, the technology of processing a powerful steep formation includes dividing the formation into inclined layers and processing them in descending or ascending order with each layer being cut out in short strips along the strike in descending order, holding and forming the necessary preparatory workings in the filling hardening array that are used in processing the adjacent inclined layer, for which ventilation and conveyor drifts in each strip of subsequent inclined layers in mining are shifted by half the section in the fall and whether the uprising of the formation relative to similar workings adjacent adjacent worked out inclined layer formed in the filling array. At the same time, when erecting the filling mass in the worked-out strip, they lay the conveyor drift of the adjacent strip in the spent inclined layer, laying the lining elements on the soil of the strip, and anchoring it for the conveyor drift of the underlying strip, and when mining adjacent stripes in adjacent inclined layers, the direction of their mining is reversed . The formation of slopes in the stowing array is carried out starting from the second inclined layer in a certain sequence: if in the previous inclined layer the slopes were on the flanks and in the center of the excavation field, then in the underlying inclined layer the slope is formed in the center of each block of the excavation field. This alternation of the location of the formed slopes in the layers is continued until the development of the penultimate inclined layer.