Sharply inclined coal seam mining method

A mining method and a technology of steep inclination, which are applied in the field of roof control by flexible cover supports in steeply inclined coal seams, can solve the problems of restricting single-level excavation, roadway support, difficult maintenance, and heavy outburst prevention workload, etc., and achieve reduction The effect of digging the number of cut holes, reducing the workload of preventing outbursts, and reducing the loss of coal resources
CN101307692AInactive Publication Date: 2008-11-19邹开科
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
邹开科
Publication Date
2008-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for mining a steeply inclined coal seam. The method comprises the following: step one, opening a return airway (2) and a first conveyor roadway (3) in the steeply inclined coal seam (1); step two, digging a first through cut (12), and placing a flexible shield support (5) on the first through cut (12) for roof control, thereby forming a false dip primary mining working surface (8); step three, starting coal mining on the primary mining working surface (8); step four, gradually extending the primary mining working surface (8) downwards to produce a second through cut (11) for the coal seam of the next section opposite to the inclined direction of the primary mining working surface (8), when the primary mining working surface (8) is propelled to the position of the second through cut (11) which is designed for the coal seam of the next section, and mining the coal seam of the next section; step five, mining the lower coal seam with the step four, and continuously and recurrently mining the whole steeply inclined coal seam (1) from the bottom to the top. The method has the advantages of high mining efficiency, safer mining and high percentage of recovery.
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Description

technical field

[0001] The invention belongs to a coal mining method, and in particular relates to a mining method for controlling the top of a steeply inclined coal seam with a flexible cover support. Background technique

[0002] At present, the mining methods of steeply inclined coal seams are as follows: Figure 5 As shown, the return airway 2 is opened in the steeply inclined coal seam, and the conveyor lane 3 is opened in the steeply inclined coal seam below the return airway 2. First excavate an oblique cutout in the steeply inclined coal seam 1 above the conveyor lane 3, the upper end of the cutout communicates with the air return lane 2, and the lower end of the cutout communicates with the conveyer lane 3 for transportation through the connecting inclined lane 7 ,, and then place a flexible cover support 5 to control the roof in the cut hole to form a pseudo-inclined initial mining face 8; a coal pillar 4 is left between the mining coal seam 1 and the conveyor lane...

Claims

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