Hugely-thick inclined coal seam mining area steering method

Abstract

A hugely-thick inclined coal seam mining area steering method is used in open-air coal mine mining. The entire mining area is divided into two parts by using a working line, and coal seam striping isperformed along the two sides of a groove; when the coal seam in the north area is smaller than the coal seam in the south area, after mining of the coal seam in the north area is completed firstly, mining equipment of the coal seam in the north area is gradually transported to the working line of the coal seam in the south area and participates in subsequent mining, the number of mining equipmentis gradually increased at the west most side of the working line of the west section until the allowed maximum amount of the mining equipment is placed, so that the advance speed is increased, the original linear working line is changed into an arc working line for advance, and finally the working line rotating 90 degrees counterclockwise from the original working line is formed, so that the steering work is completely completed. The method has the beneficial effects that the steps are simple and the inner row space is released earlier, the soil discharging distance is shortened, and the transportation cost is remarkably reduced; and moreover, the length of the stripping and mining working line is increased, the annual mining capacity of an operation system is effectively improved, and therefore the economic benefit of the mine is increased.

Description

technical field [0001] The invention relates to a method for turning a mining area of ​​a huge thick inclined coal seam during the mining process of a huge thick inclined coal seam, which is especially suitable for use in the field of mining mining. Background technique [0002] The cost of open-pit coal mining is low and the economic benefits are obvious. However, open-pit coal mining will produce a large amount of exfoliation. If all of the open-pit coal is discharged to form an external dump, it will occupy a large amount of land. Generally speaking, the outer dump of a 10-million-ton open-pit coal mine occupies a large amount of land. The land area is more than 40 square kilometers. As the mining progresses, the inner drainage space is vacated in the mining pit, and the exfoliated material realizes inner drainage to form an inner dump. With the advancement of the working line, the inner dump is gradually followed up. According to the early construction layout of the coa...

AI Technical Summary

Problems solved by technology

[0003] However, according to the production experience of previous open-pit mines, during the transition period, the two mining areas will carry out stripping operations at the same time, and the production organization and management will be complicated. Reduce production, or even stop production

During the transition period, the development and transportation system is complicated. If the layout is not properly managed, the transportation distance will be increased, the transportation system will be chaotic, and the normal production of the open-pit mine will be affected.

However, the mine needs to complete production expansion in accordance with the requirements of the state during the diversion period, which will cause problems: the contradiction between diversion and capacity expansion

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