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
CN1657745AInactive Publication Date: 2005-08-24KAILUAN GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KAILUAN GRP
Publication Date
2005-08-24
Estimated Expiration
Not applicable · inactive patent

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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.
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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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