Coal mining face end hanging roof treatment device

Abstract

The invention discloses an overhanging roof treatment device at the end of a coal mining face, which weakens the overhanging roof by means of fracturing. Moreover, during fracturing, there is no need for special staff to visit the site in person, and a walking device can be used to automatically The treatment device is placed in the position to be treated where the end of the coal mining face is suspended, and then automatically drills, and automatically extends the fracturing drill pipe into the fracturing borehole, and realizes the fracturing after automatic plugging. The weakening treatment of the suspended roof improves the safety of the coal mining face and prevents the occurrence of gas, fire and other problems; the sealing and sealing mechanism of the present invention can perform sealing and sealing between the pressure drill pipe and the end face of the drilled hole, In order to use the high pressure fracturing mechanism to fracturing the suspended roof, at the same time, the plugging mechanism is simple and convenient for plugging, and can automatically ream holes and realize top pressure plugging.

Description

technical field [0001] The invention specifically relates to a ceiling suspension treatment device for an end of a coal mining face, and relates to the related field of ceiling suspension treatment. Background technique [0002] At present, in the coal mining face, generally speaking, the two ends are leaning against coal pillars, so the overhanging roof is relatively large, but the overhanging range of the old empty roof is very harmful, whether it is from roof management or from gas, The fire prevention and other angles belong to the scope of safety hazards. Therefore, it is generally necessary to control the maximum overhang distance of the end. However, it is often difficult to weaken the top plate at the overhang because the top plate at the overhang is relatively hard, so the maximum overhang distance is often large. After the overhanging distance is too large, the hard roof is often sudden when danger occurs, so it has greater danger. Therefore, in order to control t...

AI Technical Summary

Problems solved by technology

[0002] At present, in the coal mining face, generally speaking, the ends of the two ends are leaning against the coal pillars, so the suspended roof is relatively large. Fire prevention and other angles belong to the scope of safety hazards

Therefore, it is generally necessary to control the maximum suspension distance of the end. However, it is often difficult to weaken the roof at the suspension because the roof at the suspension is relatively hard, so the maximum suspension distance is often large, and this kind of When the ceiling suspension distance is too large, because the hard roof is often sudden when danger occurs, it has a greater risk. Therefore, in order to control the excessive ceiling suspension distance of the end of the coal face, it is necessary to Weakening the suspended roof, that is, using fracturing to achieve weakening treatment, so as to shorten the distance of the suspended roof, ensure the release and removal of gas, and prevent accidents such as gas and fire

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