End slope coal mining roadway air bag supporting device and method

Abstract

The invention provides an end slope coal mining roadway air bag supporting device. The device comprises first pressure-bearing air bags which are installed in an end slope coal mining roadway and used for bearing the pressure of pressure drop deformation generated by upper rock mass; second pressure-bearing air bags which are mounted in the end slope coal mining roadway, are adjacent to the first pressure-bearing air bag and are used for bearing the extrusion stress generated by the side part of the first pressure-bearing air bag; wherein the first pressure-bearing air bag and the second pressure-bearing air bag are arranged in a staggered mode, and the number of the second pressure-bearing air bags are larger than or equal to that of the first pressure-bearing air bags. According to the end slope coal mining roadway air bag supporting device, it can be guaranteed that rock mass of the upper end slope coal mining roadway is stable for a long time and does not settle, and applicability is high. The invention further provides an end slope coal mining roadway air bag supporting method.

Description

technical field [0001] The invention relates to the technical field of roadway support, in particular to an airbag support device and method for an end-side coal mining roadway. Background technique [0002] Open-pit coal mines usually use the mining rights boundary as the surface boundary, but due to geological conditions and safety considerations, the overall slope angle of the side walls of open-pit coal mines is small, and the amount of coal pressed into the side walls is relatively large. [0003] In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: at present, the side-side coal mining machine is mainly used to reclaim these side-side coal resources, and it is necessary to leave a safety coal pillar or backfill coal gangue, while leaving a safety coal Columns or backfilling coal gangue not only cause a waste of coal resources, but also cause cracks and subsidence in varying degrees ...

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: at present, the side-side coal mining machine is mainly used to reclaim these side-side coal resources, and it is necessary to leave a safety coal pillar or backfill coal gangue, while leaving a safety coal Columns or backfilling coal gangue not only cause a waste of coal resources, but also cause cracks and subsidence in varying degrees in the overlying strata over time, which may cause landslides and endanger the safety of open-pit coal mining

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