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Comprehensive coal-mining process by using long wall mining method

A fully mechanized mining face and longwall technology, applied in ground mining, earth square drilling, underground mining, etc.

Inactive Publication Date: 2009-12-09
YANKUANG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no precedent for adopting comprehensive mechanized coal mining technology to recover ramen.

Method used

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  • Comprehensive coal-mining process by using long wall mining method
  • Comprehensive coal-mining process by using long wall mining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The longwall coal mining method of the present invention is suitable for mining medium-thick coal seams with stable coal seams, hard roofs, simple geological structures, no faults or few faults, and gentle inclinations; it can also be selected according to the height that is convenient for mining, about 2.5m to 3.5m, Thick coal seams are mined in layers. Adopt the single-trend longwall working face full subsidence method for mining.

[0022] The fully mechanized mining face adopts super-long layout, and its face length is arranged according to the length of two traditional fully mechanized mining faces, that is, the length of the super long fully mechanized mining face can be set at 300m-1000m, and its optimal value is 360m-610m.

[0023] exist figure 1 Shown in the fully mechanized mining process of the present invention, the layout of fully mechanized mining equipment in the longwall mining face. On the longwall fully mechanized mining face, the hydraulic support 1 ...

Embodiment 2

[0028] exist figure 2 Shown in the fully mechanized mining process of the present invention is the layout of the fully mechanized mining equipment in the direction of the longwall pair pulling back mining face. Arrange a middle lane 12 in the middle of the super-long fully mechanized mining face as a transport lane, and install a bridge loader 5, a retractable belt conveyor 6, a self-moving end support 17, and the like. The fully mechanized mining face is divided into the upper half working face 13 and the lower half working face 15 by the middle roadway 12, and a working face scraper conveyor 14, 16 is respectively arranged to transport the raw coal to the middle roadway. Reprinter 5, such as figure 2 As shown in the G-G cross-sectional view in the figure, a fully mechanized mining face with opposite pull is formed. The upper and lower troughs 8 and 9 are used as rail transportation or auxiliary transportation lanes, and at the same time as return air lanes; the middle la...

Embodiment 3、4

[0032] According to the layout and implementation of the fully-mechanized mining equipment in Embodiments 1 and 2, the longwall coal mining method of the present invention is used in the longwall fully-mechanized mining face in the direction of the thick coal seam inclined layered caving method mining.

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Abstract

The utility model relates to a longwall coal mining method fully mechanized mining technology, which involves underground coal mining, and is suitable for longwall mining of stable coal seams, hard roofs, no faults, gently dipping medium-thick coal seams and thick coal seams. Arrange hydraulic supports, scraper conveyors, and roller shearers on the longwall fully mechanized mining face, and arrange trough loaders and retractable belt conveyors on the transport lane. The fully mechanized mining face adopts super-long layout, that is, the face length is arranged according to the length of two fully mechanized mining faces. Two shearers are used, riding on the same scraper conveyor, to cut the coal walls of the upper half and the lower half respectively. The middle roadway can also be arranged in the middle of the super-long fully mechanized mining face as a transportation roadway; a scraper conveyor is arranged on the upper half and lower half of the fully mechanized mining face for opposite transportation to form a fully mechanized mining face. The invention further excavates the production potential of the longwall fully mechanized mining face, improves the output and work efficiency, and makes the production centralized; while realizing high output and high efficiency, it reduces the roadway excavation rate, reduces the loss of coal pillars, and improves the resource recovery rate; full mining is beneficial to the ground surface sink.

Description

Technical field [0001] The invention relates to the field of underground coal mining, in particular to a fully mechanized longwall mining method suitable for layered mining of gently inclined medium-thick coal seams and thick coal seams with stable coal seams, hard roofs and no faults. Background technique [0002] With the continuous improvement of fully-mechanized mining technology and the continuous improvement of fully-mechanized mining equipment, the fully-mechanized mining technology of medium-thick coal seam full-height mining and thick coal seam layered mining has been quite mature, with excellent safety and efficiency. [0003] The fully mechanized coal mining process is the comprehensive mechanized coal mining process. The production process of the fully mechanized mining face mainly includes four processes: coal cutting, coal transportation, support and goaf treatment. Coal cutting, coal transportation, and support processes are respectively completed by the drum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21C25/06E21F13/00
Inventor 耿加怀金太黄福昌杨德玉何烨来存良倪兴华李政张怀新苗素军张崇宏孟凡增
Owner YANKUANG GRP CO LTD
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