Forward-movement coal cutting and retracting filling mining method for open-air end slope

Abstract

The invention discloses a forward-movement coal cutting and retracting filling mining method for an open-air end slope. On a strip mine end slope pit bottom, a tunnelling machine inwards automaticallycarries out forward-movement type mining and roadway coal cutting, then, a loading mechanism is used for conveying falling coal to a coal conveying belt through a scraper chain in the tunnelling machine, and finally, the coal is conveyed out of the roadway through a coal conveying belt machine. When the tunnelling machine carries out tunnelling to a mining stop line, the tunnelling machine automatically lowers a cutting head, a filling device on the tunnelling machine is controlled to lower a filling bag, and then, slurry is injected into the filling bag through a slurry injection pipeline through a retracting way. According to the forward-movement coal cutting and retracting filling mining method, the problems that an open-air end slope coal briquettes are difficult to recover and an endslope structure is poor in stability by traditional mining are solved, a coal resource recovery rate is improved, earth surface subsidence brought by end slope mining is reduced, and environmentally-friendly mining is realized. In addition, according to the method disclosed by the invention, quick pipe arrangement and mining and filling automation can be realized, the mining efficiency and the production safety of coal resources can be obviously improved, and coal production cost and the labor intensity of workers can be greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a mining method in which the open-pit end-side advances to cut coal and retreats to fill, and is suitable for open-pit end-side coal pressing mining. Background technique [0002] In the production process of open-pit mines, many coal resources are often unable to be recovered effectively, resulting in a large waste of resources. In the coal production bases of Ordos and Shenfu in the Inner Mongolia and Shanxi regions, there are a large number of open-pit mine side and hillside outcrop coal, with a total amount of hundreds of millions of tons. In the past, this part of coal resources was often abandoned or adopted low-recovery room-and-pillar mining. , Not only lost a large amount of coal resources, but also planted disasters for the stability of Duanbang. At the same time, conventional roadway mining has high intensity, low mining efficiency, and many potential safet...

AI Technical Summary

Problems solved by technology

[0002] In the production process of open-pit mines, many coal resources are often unable to be effectively recovered, resulting in a large waste of resources

In the coal production bases of Ordos and Shenfu in the Inner Mongolia and Shanxi regions, there are a large number of open-pit mine side and hillside outcrop coal, with a total amount of hundreds of millions of tons. In the past, this part of coal resources was often abandoned or adopted low-recovery room-and-pillar mining. , not only lost a large amount of coal resources, but also brought disasters to the stability of Duanbang

At the same time, conventional roadway mining has high intensity, low mining efficiency, and many potential safety hazards

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