Quick coal mining method used for controlling ground deformation

Abstract

Disclosed is a quick coal mining method used for controlling ground deformation. The quick coal mining method includes the steps: (a), excavating a working face transportation roadway and a working face air return roadway; (b), excavating a backstoping branched roadway; (c), arranging coal mining equipment, transloading equipment, transferring equipment, transportation equipment and support equipment; (d), sequentially excavating a plurality of mining pits on the left side and the right side of the backstoping branched roadway, and transporting mined coal to a mine main haulage roadway through the transloading equipment, the transferring equipment and the transportation equipment; (e), after mining of the backstoping branched roadway is completed, excavating a next backstoping branched roadway according to a preset interval, and repeating the steps (c) and (d); (f), after mining of the previous backstoping branched roadway is completed, continuing to excavate a next backstoping branched roadway according to the preset interval, and repeating the steps (c) and (d); (g), repeating the step (f). By the quick coal mining method, ground deformation can be controlled effectively, downhole ground safety can be ensured, and mining efficiency can be improved while mining cost can be lowered effectively.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a rapid coal mining method for controlling surface deformation. Background technique [0002] Due to the dense villages, criss-crossing roads, and lakes and rivers in the coal mining areas in the central, eastern and northeastern parts of my country, coal mining enterprises must leave enough coal pillars during underground mining to avoid surface subsidence, resulting in incomplete exploitation of coal resources. The amount of compressed coal is large. As many mines gradually enter the aging period, in order to prolong the life of mines and improve the service life, coal mining enterprises have to consider mining compressed coal. In addition, coal mining enterprises in Shanxi and other provinces and autonomous regions, in the process of coal mine resources integration and coal enterprise mergers and reorganizations, have a lot of "triangle coal" and "edge coal" underground. In order to red...

AI Technical Summary

Problems solved by technology

[0003] However, as far as the recovery and utilization of the above-mentioned coal resources are concerned, the existing coal mining methods are not suitable, the most important reason being that they cannot effectively control the surface deformation or ensure the mining efficiency

Existing coal mining methods cannot guarantee underground mining safety, let alone ground safety

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