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Small-scale mechanical flexible shield support coal mining method for steep seam

A technology of flexible shielding support and coal mining method, which is applied in slitting machinery, mine roof support, ground mining and other directions, can solve the problems of mutual "interception, large equipment investment, and collapse, etc., to achieve high reliability and reduce labor." The effect of strength and cost

Active Publication Date: 2019-10-22
牛永东
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other methods have the disadvantages of large investment in equipment, difficult installation of coal mining face, and difficulty in moving, and there are problems such as mutual "biting" and inversion of fully mechanized mining supports when they are moved, especially the existing above-mentioned coal mining methods. Coal mines that are thin and have small coal reserves are mined, so that these coal resources cannot be used

Method used

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  • Small-scale mechanical flexible shield support coal mining method for steep seam
  • Small-scale mechanical flexible shield support coal mining method for steep seam
  • Small-scale mechanical flexible shield support coal mining method for steep seam

Examples

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Effect test

Embodiment

[0028] A small-scale mechanized coal mining method with a flexible cover support in a steeply inclined coal seam, comprising the following steps:

[0029] 1) Under the steeply inclined coal mining area, excavate a horizontal transport chute 10 from outside to inside until the coal mining end at the boundary of the coal mining area, and install a scraper conveyor 8 in the excavated horizontal transport chute 10; On the top corresponding to the horizontal transport trough 10, excavate the horizontal return air trough 2 from outside to inside until it is located at the boundary of the coal mining area; excavate the cutout 4 of the inclined coal mining face so that the cutout 4 of the inclined coal mining face is connected The lower transport chute 10 and the upper return air chute 2;

[0030] 2) On the gob side in the cutout 4 of the inclined coal mining face in step 1), several flexible shield supports 5 are installed sequentially, and four steel wire ropes 6 are used to connect...

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Abstract

The invention provides a small-scale mechanical flexible shield support coal mining method for a steep seam. The small-scale mechanical flexible shield support coal mining method for the steep seam comprises the steps of driving a horizontal conveying way, a horizontal air return way and an inclined coal working face open-off cut is conducted; a plurality of flexible shield support units are installed on the goaf side in the inclined coal working face open-off cut and are connected and fixed through multiple steel wire ropes, and multiple steel wire rope ends are reserved at the two ends of the flexible shield support; an upper traction rope and a lower traction rope which are connected with the head and the tail of a coal cutter correspondingly are arranged on the coal mining side in theinclined coal working face open-off cut; the coal cutter is dragged to conduct mining, and the flexible shield support is dragged to move. Small-scale mechanical mining is conducted on a coal mine with a thin coal seam and low coal storage, coal blasting is not needed any more, people do not need to be on the scene during coal mining and support moving, the safety and reliability are quite high, and the labor intensity and cost are lowered.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a small-scale mechanized mining method for steeply inclined coal seams, and belongs to the technical field of coal mining. Background technique [0002] For the mining of steeply inclined coal seams, the existing technologies include: flexible cover support coal mining method, pseudo-inclined longwall segmented dense coal mining method, top-coal mining method with suspended support, comprehensive mechanized coal mining method for steeply inclined coal seams, etc. etc. Among them, the coal mining method with longwall flexible shield support in pseudo oblique direction is a method of blasting coal mining by setting flexible shield support in the longwall roadway. The biggest safety risk is the coal mining process that tends to be eliminated. Other methods have the disadvantages of large investment in equipment, difficult installation of coal mining face, and difficulty in moving, and there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21C29/14E21D23/10
CPCE21C29/14E21C41/18E21D23/10
Inventor 牛永东
Owner 牛永东
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