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Coal mining method for high-dipping low seam

A coal mining method and a technology of steep inclination, applied in the field of coal mining in steeply inclined thin coal seams, can solve the problems of inability to realize mechanized mining, high labor intensity, low efficiency, etc., so as to improve the recovery rate of mine resources, increase unit yield and efficiency, and output and efficiency-enhancing effects

Inactive Publication Date: 2011-01-12
TIANDI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the warehouse mining method and the small-stage coal mining method have been banned by the state; the horizontal segment intensive coal mining method and the inverted step coal mining method are labor-intensive, have low efficacy, are unsafe, and cannot realize mechanized mining

Method used

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  • Coal mining method for high-dipping low seam
  • Coal mining method for high-dipping low seam
  • Coal mining method for high-dipping low seam

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] exist figure 1 and figure 2 In the process, the coal shearer 2 drops coal along the rack rail of the walking beam 3, firstly cuts off the coal wall 4 by a cycle step of the working face, then pushes the walking beam 3 forward by one step, and then moves the step The beam 3 is a support, and the air stack support 1 is moved forward by one step in sequence. The walking beam 3 is pulled by the suspension jack 7 arranged in the return air lane 5 of the working face, which can prevent the walking beam 3 from sliding down; the suspension jack 7 is anchored by the anchor column 8. As the working face advances, goaf filling is carried out from the air return lane 5 of the working face. At the lower end of the working face, along with the advancement of the working face, filling is carried out along the transport lane 10 of the working face.

[0013]...

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PUM

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Abstract

The invention relates to a coal mining method for a high-dipping low coal seam by long-wall mining. The method comprises the following steps of: supporting a roof by a self-advancing air bag support; arranging a working surface in a mode of advancing to the dip; mining coal by drilling and blasting or using an off-pan shearer; transporting the coal in a mode of gravity haulage; filling a goaf with gangue or sand; and filling a lower end with gangue bags, precast concrete blocks or solidified macromolecular foaming slurry. The coal mining method has the advantages of realizing mechanical coal mining for the high-dipping low coal seam, improving the yield per unit and efficiency of the working surface, effectively protecting the exploited ground, improving the recovery rate of mines, and guaranteeing the coal seam mining safety.

Description

technical field [0001] The invention relates to a coal mining method for mining a steeply inclined thin coal seam towards a long wall. Background technique [0002] Coal mining methods commonly used in steeply inclined thin coal seams are: warehouse mining method, horizontal segmented intensive coal mining method, inverted step coal mining method, small stage coal mining method, etc. Among them, the warehouse mining method and the small-stage coal mining method have been banned by the state; the horizontal segment intensive coal mining method and the inverted step coal mining method are labor-intensive, have low efficacy, are unsafe, and cannot realize mechanized mining. Contents of the invention [0003] The invention provides a novel coal mining method, which can realize mechanized or semi-mechanized mining of steeply inclined thin coal seams, greatly improves the output and efficiency of the working face, and ensures safe production. [0004] This method uses a new typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18
Inventor 樊运策毛德兵张海涛王东攀李纪青徐刚
Owner TIANDI SCI & TECH CO LTD
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