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Fully mechanized mining recovery technology with large mining height and large mining height in complex thick coal seam with large dip angle structure

A technology with complex structure and thick coal seam, which is used in surface mining, mining equipment, earth-moving drilling, etc.

Active Publication Date: 2021-04-23
SICHUAN CHUANMEI HUARONG ENERGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a fully mechanized mining recovery process with a complex and thick coal seam with a large dip angle structure and a large mining height, which can effectively prevent roof caving and coal mining equipment damage

Method used

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  • Fully mechanized mining recovery technology with large mining height and large mining height in complex thick coal seam with large dip angle structure
  • Fully mechanized mining recovery technology with large mining height and large mining height in complex thick coal seam with large dip angle structure

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Embodiment Construction

[0033] The present invention is further described below.

[0034] The fully mechanized mining recovery technology disclosed by the present invention has a complex thick coal seam with a large dip angle structure and a large mining height, comprising the following steps:

[0035] The coal shearer enters the knife from the end of the working face without cutting, such as figure 2 As shown, a section of uncut coal is reserved near the upper end of the air return lane 5, and the shearer 7 starts cutting coal directly from below, and the shearer 7 cuts coal downwards, that is, from the upper return air lane 55 downward toward the bottom The transport lane 4 of the transport lane cuts coal in sequence, and the upward direction refers to the movement from the transport lane 4 below to the return air lane 55 above;

[0036] Follow the shearer 7 to move the hydraulic support 3 for the first time, and the moving distance is less than the depth of the shearer 7;

[0037] Move the hydr...

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Abstract

The invention relates to a coal mining technology, and discloses a fully mechanized mining recovery technology with a large mining height and a complex thick coal seam with a large dip angle structure. This process retains the uncut section to feed the knife, and through the supporting effect of the uncut section, the empty roof area is reduced to prevent the occurrence of roof fall accidents. The combination of cutting sections can further improve the stability of the entire working face, and ensure the unimpeded pedestrian passage of the end bracket and tail frame; moving the hydraulic support twice can solve the problem that the hydraulic support cannot be pushed to a cutting depth at one time, and ensure that the scraper conveyor can Push it in place to maintain the safe operation of the equipment.

Description

technical field [0001] The invention relates to a coal mining technology, in particular to a fully mechanized mining recovery technology with a large mining height and a complex thick coal seam with a large dip angle structure. Background technique [0002] A thick coal seam with a large dip angle generally refers to a coal seam with a dip angle between 35° and 55° and a thickness greater than 3.5m. Thick coal seams with large dip angles can be mined and produced by fully mechanized mining with large mining heights. Large mining heights and fully mechanized mining are full-height mining of thick coal seams above 3.5m in one go. Coal mining equipment for fully mechanized mining with large mining height mainly includes shearer 7, hydraulic support 3, scraper conveyor 8, bridge loader 9, etc. The large mining height hydraulic support of the large mining height fully mechanized mining recovery process mainly includes structures such as a bottom lifting device 34 , an adjusting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18E21F13/00E21F13/06E21F13/08E21D23/08
CPCE21C41/18E21D23/08E21F13/006E21F13/06E21F13/08
Inventor 杨磷林勇黄正平李虎梁国栋吴芝宏
Owner SICHUAN CHUANMEI HUARONG ENERGY CO LTD
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