Longwall mining method 110

Abstract

The invention discloses a longwall mining method 110. The longwall mining method 110 is characterized in that a belt downhill channel, an air return downhill channel and a track downhill channel are arranged, the whole panel is provided with a plurality of working faces, an upper gate road and a lower gate road of each working face which is being mined are communicated with the belt downhill channel, the lower gate road is left in a roadway after the working face is mined to serve as the upper gate road of the next working face, and the lower gate road of the next working face is communicated with the air return downhill channel. According to the longwall mining method 110, as the upper gate road and the lower gate road of each working face which is being mined are communicated with the belt downhill channel, and the lower gate road of the next working face is communicated with the air return downhill channel, ventilation of the working face which is being mined is realized by not only the upper gate road and the lower gate road of the working face but also the lower gate road of the next working face, the ventilation quantity of the working face which is being mined is increased, the ventilation speed is also increased, and accordingly, the ventilation performance is improved to further improve the coal mine production security.

Description

technical field [0001] The invention relates to the longwall mining technology in coal mines, in particular to the longwall mining 110 construction method. Background technique [0002] At present, in the process of longwall mining, such as figure 1 The 121 construction method is used as shown, that is, two roadways need to be excavated in one working face, and a coal pillar is reserved as a support. Specifically, each working face 10 includes an upper trough 11, a lower trough 12 and a mining face 13, the upper trough 11 of each working face 10 is connected to the belt downhill passage 14, and the lower trough 12 of each working face 10 is connected back to The wind downhill passage 15 is also provided with a track downhill passage 16 in addition. In the current structure, coal pillars need to be left, resulting in a large waste of resources. Moreover, each working face needs to excavate two roadways, and the working efficiency is low. [0003] In addition, each mining ...

AI Technical Summary

Problems solved by technology

In the current structure, coal pillars need to be reserved, resulting in a large waste of resources

Moreover, each working face needs to excavate two roadways, and the work efficiency is low

[0003] In addition, each mining face 13 is likely to form a dead spot of ventilation during the mining process, and the ventilation volume is not large enough and the wind speed is small, which will easily cause toxic and harmful gases to stay on the mining face 10, causing safety hazards and even mine accidents.

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