Coal-minin method of high-dipping thick seam

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

Inactive Publication Date: 2005-08-24
KAILUAN GRP
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Problems solved by technology

The method of oblique cutting and layering has low recovery rate,...

Method used

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

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Embodiment Construction

[0039] 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:

[0040] 1. Coal mining method design and applicable conditions.

[0041] (1) Coal mining method design:

[0042] see figure 1 , the so-called double ditch is in the center, along the bottom and roof of the coal seam, two independent brackets are arranged along the bottom and roof of the coal seam. Collectively referred to as double ditch. 1.5-2.5 between the two ditches isolates the lower exit of the coal pillar, and the bottom ditch communicates with the transportation road through the vertical eye and the coal door and fork eye communicates with the transportation. The floor ditch of the upper exit is connected with the upper mountain through independent air return lanes. The return air ducts of the two ditches are connected by coal doors every 50 meters, and t...

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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. In the past, the mining of thick coal seams generally adopted 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 miners, and labor intensity of workers. Pit wood consumption. Technical and economic indicators such as recovery rate cannot achieve good results. Plus with the increase of mine pressure. The method of oblique cutting and layering has l...

Claims

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Application Information

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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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