Filling fully-mechanized mining recycling method for compressed coal on end side of opencast coal mine

Abstract

The invention discloses a filling fully-mechanized mining recycling method for compressed coal on the end side of an opencast coal mine. An adit is driven from the side, close to the end side and close to lower steps of the inner row, at the bottom of the opencast mine to the earth surface boundary line in the direction that a coal bed is perpendicular to the end side, meanwhile, an air shaft is driven; and then a main air return roadway is driven from the bottom of the air shaft and the innermost end of the adit in the direction that the coal bed is parallel to the end side respectively and communicate at the bottom of the air shaft, and thus a complete ventilation system is formed. The driven adit serves as a fully-mechanized working face, and operation is conducted through matching of a filling hydraulic support, a coal mining machine and a scraper conveyer. Mining and filling are conducted simultaneously up to the final boundary in the direction of the working slope of the opencast mine, so that the compressed coal on the end side is mined to the maximum extent, the coal loss is reduced, and the mining rate of the opencast coal mine is increased; and meanwhile, stripped waste of the opencast coal mine can be fully utilized for filling, so that the waste discharge amount is decreased, and environmental-friendly mining of the coal is achieved.

Description

technical field [0001] The invention relates to a mining method, in particular to a fully mechanized mining recovery method suitable for side-side pressure coal filling and filling in open-pit coal mines with near-horizontal shallow coal seams. Background technique [0002] In my country's coal industry, the resource recovery rate is relatively low. Although the recovery rate of open-pit coal mines is higher than that of underground coal mines, if the resources occupied under the slope of open-pit coal mines and the residual ore on the periphery of the boundary are included, the resource recovery of open-pit coal mines is relatively low. Most of the resources are below 75%, and nearly 1 / 4 of the resources cannot be recycled. For example, in the Dananhubei open-pit mine in Xinjiang, there are 1,098.35 million tons of recoverable geological coal within the mining rights of the exploration area, 823.7418 million tons of recoverable geological coal within the open-pit mining boun...

AI Technical Summary

Problems solved by technology

[0003] For near-horizontal shallow coal seams, during the production process of the open-pit mine, the waste generated by the stripping must be discharged internally. If the side coal is not mined out in time, it will cause permanent losses.

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