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Quick recovery method for inclined thick coal seam working face

A technology of inclined thick coal seam and recovery method, which is applied in ground mining, earthwork drilling, underground mining, etc., and can solve the problems of long construction period and difficult safety management of the withdrawal channel

Inactive Publication Date: 2020-10-02
陈芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a quick recovery method for inclined thick coal seam working face to solve the technical problems of long construction period and difficult safety management of the existing withdrawal channel

Method used

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  • Quick recovery method for inclined thick coal seam working face
  • Quick recovery method for inclined thick coal seam working face
  • Quick recovery method for inclined thick coal seam working face

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0028] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such...

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Abstract

The embodiment of the invention provides a quick recovery method for an inclined thick coal seam working face. The method comprises the steps of building a withdrawing channel, the withdrawing channelis connected with a rubber belt transportation roadway and an air return roadway, and subsection and stepped blasting digging is adopted during building of the withdrawing channel; recovering tail large frames, tail transmission parts and scraper chains of a front scraper conveyor and a rear scraper conveyor through the air return roadway; and lifting and recovering a bracket on a terrace throughthe withdrawing channel. The recovery speed of machine lane equipment is increased by building a recovery connection lane and the withdrawal channel, and meanwhile, quick drainage and sludge cleaningwork of a lower opening of the withdrawal channel are facilitated; the construction period of the gently inclined thick coal seam working face withdrawing channel is shortened through the construction mode of combining subsection and stepped blasting digging with coal mining machine bottom sweeping, and the safety management and control capacity in the withdrawing channel supporting process is further improved; when the inclination angle of the working face is large, a terrace direct-dragging mode is adopted, the safety control capacity in the recovery period is improved, and the recovery speed of the working face is increased; an equipment recovery transfer station is arranged, and the utilization rate of special vehicles is increased.

Description

technical field [0001] The application relates to the field of recovery and transportation of working faces, in particular to a method for quick recovery of working faces in inclined thick coal seams. Background technique [0002] The coal seam dip refers to the angle between the inclined coal seam and the horizontal plane. Due to the movement of the earth's crust, the original horizontal coal-measure strata have changed, some become steeper, some slow down, and take on different forms; according to the dip angle of the coal seam, it is divided into four categories: the near-horizontal coal seam with a dip angle of the coal seam <10° Gently inclined coal seams with a coal seam dip angle of 10° to 25°; inclined coal seams with a coal seam dip angle of 25° to 45°; steeply inclined coal seams with a coal seam dip angle >45°. In coal mining practice, coal seam inversion may also be encountered. [0003] At present, when the inclination angle of the working face is greate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18
CPCE21C41/18
Inventor 陈芳翟卓凡刘阳
Owner 陈芳
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