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Steeply inclined coal seam strike long-wall mechanization mining method

A mining method and steeply inclined technology, which is applied in the field of steeply inclined coal seam to longwall mining, can solve the problems of high coal loss rate, low mining efficiency, high labor intensity, etc., and achieve high recovery rate, wide application range and high degree of mechanization Effect

Inactive Publication Date: 2014-01-01
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high coal loss rate, poor ventilation, high labor intensity and low mining efficiency in the current steeply inclined coal seam mining method. technical problem

Method used

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  • Steeply inclined coal seam strike long-wall mechanization mining method
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  • Steeply inclined coal seam strike long-wall mechanization mining method

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Effect test

Embodiment 1

[0019] Such as figure 1 , 2 As shown, a kind of steeply inclined coal seam moves toward the longwall mechanized mining method, and the specific steps are as follows:

[0020] (1) Along the trend of the steeply inclined coal seam, two recovery roadways, the transportation channel 1 and the return air channel 2, are arranged in parallel at an upper and lower interval of 40m. 5°;

[0021] (2) When the mining roadway is excavated to the design position, the mining face 5 is excavated from the upper and lower sides along the coal seam inclination, and the mining face is 70° from the horizontal direction to form a longwall mining system;

[0022] (3) After the mining face is excavated, a chain-driven coal plow 3 is installed at the end of the mining face to carry out normal coal mining operations.

[0023] (4) The coal blocks planed by the coal plow slide down to the lower part along the inclined working surface, and then transported to the section transport roadway 8 through the...

Embodiment 2

[0032] Such as figure 1 , 3 As shown, a kind of steeply inclined coal seam moves toward the longwall mechanized mining method, and the specific steps are as follows:

[0033] (1) Along the trend of the steeply inclined coal seam, two recovery roadways, the transportation channel 1 and the return air channel 2, are arranged in parallel at an upper and lower interval of 60m. The mining roadway is 1500m long and slopes slightly downward along the coal seam at 10° to the horizontal direction;

[0034] (2) When the mining roadway is excavated to the design position, the mining face 5 is excavated from the upper and lower sides along the coal seam inclination, and the mining face is 75° from the horizontal direction, forming a longwall mining system;

[0035] (3) After the mining face is excavated, a chain-driven coal plow 3 is installed at the end of the mining face to carry out normal coal mining operations.

[0036] (4) The coal blocks planed by the coal plow slide down to the ...

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Abstract

The invention discloses a steeply inclined coal seam strike long-wall mechanization mining method, and relates to a steeply inclined coal seam mining method, wherein problems of high labor intensity, low mining efficiency in the prior art are solved. The method comprises that: (1) along a steeply inclined coal seam strike, mining roadways are tunneled in a parallel manner and in an upper-lower interval of 40-60 m, wherein the mining roadway is slightly and downward inclined along the coal seam strike, and forms an angle of 5-10 DEG with the horizontal direction, and a length of the mining roadway is 1000-1500 m; (2) a mining work surface is tunneled along the coal seam inclined direction from joints, wherein the mining work surface and the horizontal direction form an angle of 70-75 DEG; (3) a chain-driven coal plough is arranged on the end head of the mining work surface to perform coal mining operation; and (4) coal falls onto the conveying crossheading end head along the inclined work surface, and is conveyed to the section conveying roadway through a transfer machine and a belt conveyor. The method can be used for steeply inclined coal seam mining, and has advantages of simple roadway layout, high mechanization degree, high recovery rate, safety and reliability.

Description

technical field [0001] The invention relates to a mining method of a steeply inclined coal seam, in particular to a mining method of a steeply inclined coal seam moving toward a long wall. Background technique [0002] Under the conditions of steeply inclined coal seams, there are problems such as poor top-coal cascading, dynamic instability of coal and rock, low reliability of mining technology and equipment, flood and fire prevention and control, and mining is extremely difficult. At present, the problems existing in mining steeply inclined coal seams are as follows: (1) The coal loss rate is high. It mainly exists in those coal mining methods that have no isolation facilities between the mined coal and the gangue falling out of the goaf, such as slope type, small segmental blasting, hydraulic coal mining, storage type, etc. The coal loss rate of these coal mining methods is as high as 40% to 50%. (2) The roadway excavation rate is high. It is mainly manifested in coal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21C27/32
Inventor 赵阳升赵建忠冯子军杨栋胡耀青
Owner TAIYUAN UNIV OF TECH