SU1176094A1 - Method of traversing zones of elevated rock pressure of entry working - Google Patents

Abstract

THE METHOD OF TRANSITION OF THE INCREASED MOUNTAIN PRESSURE ZONES OF THE PREPARATORY DEVELOPMENT, which includes the local development of a protective formation by a clearing face, the determination of the boundaries near the zone of the increased mountain pressure, in order to improve the safety of carrying out and maintain preparatory workings in areas of elevated pressure. pressure, the working face of the protective layer being developed is stopped, a local excavation is made in the lower part of the lava above preparatory excavation to the boundary of the zone of increased rock pressure, after which they continue to work on carrying out preparatory excavation, and after their completion, the remaining part of the lava is excavated, while the protective layer being mined is stopped until the elevated rock pressure zone reaches at least the width of the reference pressure zone, and the preparatory development is carried out beyond the boundary of the local excavation section for a distance of 0.5 of the width of the reference pressure zone. WITH

Description

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Phie, 1 The invention relates to the mining industry and can be used when carrying out workings on outburst and impact formations in areas of increased rock pressure. The purpose of the invention is to increase without danger of conducting and maintaining preparatory workings in areas of elevated rock pressure by successive unloading of the protective formation from rock pressure. FIG. 1 shows a mining plan prior to the start of the method; in fig. 2 is the same after performing the method. FIG. 1 and 2, the following designations are accepted: 1 — preparatory development, carried out along the lower formation, 2 — clearing face at the overburden, 3 — preparatory excavations at the overburden. 42 4 is the boundary of the zone of influence of the oppressed pressure generator, 5 is the zone of local excavation in the lower part of the lava of the adjacent bed, 6 is the zone of generation of the lava of the outgoing bed. The method is carried out as follows. For outburst formation, preparatory development 1 is carried out in a protected zone from the clearing hole 2 of the trans-peaking formation. When the excavations 3 are carried out, disturbances of the reservoir and the boundary 4 of the zone of its influence are revealed. Before approaching the boundary 4 at a distance not less than the width of the reference pressure zone, the cleaning face 2 is installed and the lower part of the lava 5 is locally retracted to the boundary 4. Then, preparatory development 1 is made for the boundary zone 4 at a distance of half the width of the reference pressure zone.

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Claims (1)

METHOD OF TRANSITION OF ZONES IS INCREASED- OF MOUNTAIN PRESSURE OF THE MINING BY PREPARATORY WORK, including local development of a protective formation by a treatment face, determination of boundaries at the zone of high mountain pressure, from / 2 / / Z? > '2'77777777777777 ^ And he is characterized by the fact that, in order to increase the safety of conducting and maintaining preparatory workings in areas of high rock pressure by sequentially unloading the formation from rock pressure, the working face of the developed protective formation is stopped, a local excavation of the formation is made in the lower part of the lava above the preparatory mine to the border of the zone of increased rock pressure, after which the preparatory work is continued, and after its completion, the remaining parts of lava, with the developed protective layer slaughter stopped before reaching the boundary of increased overburden pressure zone by a distance no less than the width of the reference pressure zone and the preparatory production is carried out abroad local alignment recesses by a distance 0.5 times the width of the reference pressure zone. »1176094 / / Y /. /// Fie. 1