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Ultra-close coal layer mining roadway distributing method

A roadway arrangement and extremely close-distance technology, applied in tunnels, mining equipment, earthwork drilling and mining, etc., can solve problems such as waste, achieve the effects of reducing waste rock discharge, saving support costs, and reducing tunneling rates

Active Publication Date: 2012-04-25
新汶矿业集团设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the upper and lower coal seams at very close distances are all arranged in the above-mentioned way, it seems a bit wasteful

Method used

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  • Ultra-close coal layer mining roadway distributing method
  • Ultra-close coal layer mining roadway distributing method
  • Ultra-close coal layer mining roadway distributing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] The following takes a mine as an example to further illustrate the roadway layout method for extremely close-distance coal seam mining.

[0022] Such as figure 1 As shown, a certain mine has two coal seams at very close distances, and the coal seam structure is composed of an upper coal seam roof 1, an upper coal seam 2, an upper coal seam floor (also a lower coal seam roof) 3, a lower coal seam 4, and a lower coal seam floor 5. The figure shows the layout of the mining roadway, which is to arrange the lower coal seam transportation roadway 8, the lower coal seam air return roadway 7 and the cutting hole (not marked) in the lower coal seam 4 according to the traditional conventional method; the upper coal seam transportation roadway is arranged in the upper coal seam 2 13 and cut eye; Open up a connection eye 6 connected with the return air lane of lower coal seam 4 at the air return lane position of upper coal seam 2 cut eye, form the primary air return system. Along ...

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Abstract

The invention discloses an ultra-close coal layer mining roadway distributing method, which comprises the following steps that: a contact eye which is communicated with a return airway of a lower coal layer is bored above an upper coal layer cutting eye to form a primary air return system; an air return roadway which is lagged to maintain is bored on an outline of an originally-designed upper coal layer return airway, a contact eye which is communicated with the return airway of the lower coal layer is bored every 20 to 60m on the lagged maintained roadway to form a complete production system. The return airway which is lagged to maintain is a roadway which is formed through the maintenance of an individual strut after coal is mined on the upper coal layer, and the working face return airway of the upper coal layer is unnecessary to drive, so the tunneling rate per 10,000 tons can be reduced, the labor intensity of workers can be reduced, the discharge of recrement can be reduced, and the pressure on a transportation system can be reduced.

Description

technical field [0001] The invention relates to a coal seam mining roadway arrangement method. Background technique [0002] The extremely close distance coal seam that the present invention refers refers to two upper and lower coal seams within the range of 1-5m apart. [0003] In coal mine production, the roadway of each working face of each layer is generally composed of a transport lane, a return air lane and a cutout. The transport lane is mainly used to transport mined coal, gangue, air intake and pedestrians; the return air lane is mainly used Back and forth wind, transport materials and pedestrians; the cut eye is used to place fully mechanized mining equipment for easy mining, and the two sides are connected with the trough. If the upper and lower coal seams at extremely close distances are all arranged in the above-mentioned way, it will be somewhat wasteful. Contents of the invention [0004] The purpose of the present invention is to design a coal mining road...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14E21F1/00E21D15/00E21D17/00
Inventor 赵大勇庞继禄刘笃鸿夏建军林继凯成云海
Owner 新汶矿业集团设计研究院有限公司
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