Continuous mining technique for thin coal layer of opencast coal mine

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. ...

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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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