Continuous mining technique for thin coal layer of opencast coal mine

A technology of open-pit coal mine and process method, which is applied in open-pit mine mining, ground mining, earth square drilling, etc., and can solve problems such as low efficiency, difficult centralized crushing, and increased mining costs.

Active Publication Date: 2013-01-23
TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1
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AI Technical Summary

Problems solved by technology

[0003] At present, the mining of open-pit coal mines is mostly aimed at the occurrence of thick coal seams, using single-bucket electric shovel mining, truck transportation, fixed or semi-fixed crushing station centralized crushing, and belt conveyor transportation. The disadvantages of single, serious environmental pollution, large area of ​​driving passage, difficult centralized crushing, low efficiency, and long time-consuming lead to increased mining costs and low efficiency. At the same time, this mining method often makes the coal seam thickness less than 1 meter. Abandoned mining of coal seams, resulting in a great waste of resources

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  • Continuous mining technique for thin coal layer of opencast coal mine
  • Continuous mining technique for thin coal layer of opencast coal mine
  • Continuous mining technique for thin coal layer of opencast coal mine

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with accompanying drawing:

[0057] As shown in Figures 1, 2, 3, and 4, they are the layout diagrams of the first, second, third, and Nth mining widths. The equipment layout of each mining width is the same, which is the working cycle of continuous mining equipment. After the excavation is completed, enter the next step. The equipment layout is carried out according to the method of excavation-crushing-transferring-transportation. The position and connection of each equipment must be correct and the installation should be firm.

[0058] The layout of the mining area is as follows: the lower part of the upper rock layer 11 is the coal seam 13, the lower part of the coal seam 13 is the lower rock layer 12, the working face belt conveyor 7 is installed on the lower rock layer 12, and the open-pit coal mine continuous mining is arranged successively at the starting point of the coal cutting direction. Coal...

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Abstract

The invention relates to a continuous mining technique for a thin coal layer of an opencast coal mine. Aiming at a stratum condition and a reserve situation of the thin coal layer of the opencast coal mine, a plurality of mining areas are arranged; steps of digging, crushing, transferring, conveying and storing are adopted; an opencast coal mine continuous mining machine, an opencast coal mine traveling type feeding crusher, a long-span bridge type reversed loader, a travelling reversed loader, a short-span bridge type reversed loader, a discharging trolley, a working surface belt conveyer and a machine alley externally-used belt conveyer are integrated; and a production mode combining digging, crushing, conveying, discharging and storing is formed. The coal mining technique is advanced; the devices are scientific and rational; equipment are compact and continuously arranged and are safe, stable and reliable; the mining efficiency is high; multi-stage transferring is realized; coals can be smoothly conveyed; and the continuous mining technique for the thin coal layer of the opencast coal mine is very ideal.

Description

technical field [0001] The invention relates to a continuous mining process for thin coal seams in open-pit coal mines, and belongs to the technical field of coal mining equipment applications and coal mining methods. Background technique [0002] Most open-pit coal mines are near-horizontal deposits, with the characteristics of multiple coal seams, thick coal seams, thin coal seams, and thick overburdens. [0003] At present, the mining of open-pit coal mines is mostly aimed at the occurrence of thick coal seams, using single-bucket electric shovel mining, truck transportation, fixed or semi-fixed crushing station centralized crushing, and belt conveyor transportation. The disadvantages of single, serious environmental pollution, large area of ​​driving passage, difficult centralized crushing, low efficiency, and long time-consuming lead to increased mining costs and low efficiency. At the same time, this mining method often makes the coal seam thickness less than 1 meter. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/26E21C47/02
Inventor 徐爱敏王赟温建刚杨喜刘敏刘磊马丽姜翎燕石岚唐会成王军周廷刘玉波张学瑞石涛
Owner TAIYUAN INST OF CHINA COAL TECH & ENG GROUP
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