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Roadway and its formation method in the thin coal seam high-grade common mining face

A technology for pulling working faces and thin coal seams, which is applied in tunnels, mining equipment, earthwork drilling and mining, etc., to achieve the effects of reducing the amount of excavation, improving the recycling rate of gangue, and saving costs

Active Publication Date: 2020-12-25
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
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Problems solved by technology

The existing roadway formation method is not suitable for the combination of the thin coal seam high-grade general mining and the combination of the working face layout and the N00 mining method of self-forming roadway mining without coal pillars

Method used

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  • Roadway and its formation method in the thin coal seam high-grade common mining face
  • Roadway and its formation method in the thin coal seam high-grade common mining face
  • Roadway and its formation method in the thin coal seam high-grade common mining face

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Embodiment Construction

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0031] The thin coal seam 7 is a coal seam with a thickness below 1.3m during underground mining and a coal seam with a thickness below 3.5m during open pit mining.

[0032] The present invention at first provides a kind of thin coal seam high-grade common mining face roadway formation method, with reference to figure 1 Shown is a flow schematic block diagram of an example embodiment of a method for forming a roadway in a thi...

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Abstract

The invention relates to the technical field of coal mining, and provides a thin coal seam high-grade common mining opposite-pulling working face roadway and a forming method thereof. The forming method of the thin coal seam high-grade common mining opposite-pulling working face roadway comprises the steps that an advanced tunneling roadway is formed at the coal wall where a thin coal seam startsto be mined; coal mining is carried out to form a goaf with a set length; and the two sides of the advanced tunneling roadway of the goaf in the length direction are filled with gangue excavated whenthe advanced tunneling roadway is formed, so that the advanced tunneling roadway of the goaf forms a haulage roadway. According to the roadway forming method, a stoping roadway does not need to be excavated in advance, the tunneling amount of the roadway is reduced, and cost is saved; advance excavation reserves a space for feeding of a coal mining machine, so that the coal mining efficiency is improved; and the surrounding of haulage roadway is filled with the excavated gangue, so that the gangue recycling rate is increased, and the roadway support cost and the conveying cost for conveying the gangue outwards are saved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a roadway in a thin coal seam high-grade general mining double-drawn working face and a method for forming the thin coal seam high-grade general mining double-drawn working face roadway. Background technique [0002] In the case of the arrangement of the high-grade general mining counter-drawing working face in thin coal seams and the N00 mining method without coal pillar self-forming roadway, how to form each roadway has become an influence on the non-coal pillar self-formed roadway mining technology and the high-grade general mining counter-drawn working face. One of the factors that determine whether the layout can be well combined. The existing roadway formation method is not suitable for the combination of the layout of the high-grade common mining in the thin coal seam and the N00 mining method of self-forming roadway without coal pillars. [0003] Therefore, it is nec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/14E21F15/00
CPCE21D9/00E21D9/006E21D9/14E21F15/00
Inventor 何满潮杨军闵铁军王琦
Owner BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
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