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Coal-mining method of high-dipping thick seam

A coal mining method and thick coal seam technology, applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of high labor intensity, low recovery rate, and high excavation volume, and achieve good ventilation, less excavation volume, and improved The effect of recovery

Inactive Publication Date: 2009-06-03
KAILUAN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of mining thick coal seams generally adopts the method of oblique cutting and layered coal mining. This coal mining method is due to ventilation, driving rate, installation and transportation of mining equipment, safety, roadway maintenance, efficiency of mining workers, labor intensity of workers, The technical and economic indicators such as pit wood consumption and recovery rate cannot achieve good results. In addition, with the increase of mine pressure, oblique cutting and layering are used, the recovery rate is low, the amount of excavation is high, the labor intensity of workers is high, and it is not safe.

Method used

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  • Coal-mining method of high-dipping thick seam
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  • Coal-mining method of high-dipping thick seam

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Embodiment Construction

[0044] The present invention is to the 8~10 meter thick coal seam, adopts the coal mining method of double-ditch pseudo-inclined flexible cover bracket, carries out design mining according to the following steps:

[0045] 1. Coal mining method design and applicable conditions

[0046] (1) Coal mining method design:

[0047] Referring to Fig. 1, the so-called double ditch means that in a coal seam with a thickness of 8 to 10 meters, two independent flat-type pseudo-inclined flexible shielding supports with a span of 3 meters are arranged along the bottom and roof of the coal seam. , along the bottom is called the bottom ditch 1. Collectively referred to as double ditch. 1.5-2.5 meters between the two ditches isolate the exit of the coal pillar, the bottom ditch communicates with the transport road through the vertical eye, and the coal gate and the fork eye communicate with the transport road. The floor ditch of the upper exit is connected with the upper mountain through ind...

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Abstract

The invention discloses a method for coal mining to the greatly oblique coal layer, comprising two steps: designing the method and back producing technique, placing slit flexible shielding support in the coal layer of 8-10m and deciding return airway and cutting point; the back producing technique includes enlarging airway, installing support, put down support and desinence of working face, etc. The method has simple operational steps as well as remarkable economic benefit.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a coal mining method for steeply inclined thick coal seams. Background technique [0002] Before liberation, the coal mining method of steeply inclined thick coal seams all adopted the falling stacking method. After liberation, the thick coal seam mining was changed to horizontal layering, oblique layering, deep hole blasting, comprehensive coal mining, and other coal mining methods. The traditional method of mining thick coal seams generally adopts the method of oblique cutting and layered coal mining. This coal mining method is due to ventilation, driving rate, installation and transportation of mining equipment, safety, roadway maintenance, efficiency of mining workers, labor intensity of workers, The technical and economic indicators such as pit wood consumption and recovery rate cannot achieve good results. In addition, with the increase of mine pressure, oblique cutting and layering...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21D15/00E21F1/00
Inventor 钟亚平殷作如李建民张瑞玺梁友锁姬超文刘占春谷梦平石俊生么大刚班春生
Owner KAILUAN GRP
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