Underground coal mine directional long drilling recyclable fixed-point grouting device

A grouting device and long drilling technology, which is applied in directional drilling, earthwork drilling, wellbore/well parts, etc., can solve the problems of increased drilling cost, difficult drilling, complicated manufacturing process, etc., and achieve improved drilling efficiency. Improve construction efficiency, reduce drilling construction costs, and realize the effect of recycling and reuse

CN113309487AActive Publication Date: 2021-08-27XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-08-27

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Abstract

The invention discloses an underground coal mine directional long drilling recyclable fixed-point grouting device. The recyclable fixed-point grouting device is composed of a large-diameter drill rod, a rubber plug, a small-diameter drill rod, a metal plug, a bypass water tool and a one-way valve, the rubber plug, the metal plug and the bypass water tool are all provided with through holes, the large-diameter drill rod is fixedly connected with the rubber plug, the small-diameter drill rod is in threaded connection with the metal plug, the one-way valve is fixed into a through hole in the metal plug, the small-diameter drill rod and the metal plug can freely pass through a through hole in the large-diameter drill rod, the metal plug can pass through a through hole in the rubber plug under the action of force to form sealing, and the small-diameter drill rod can penetrate through the bypass water tool to form simple sealing. The invention further discloses an underground coal mine directional long drilling recyclable fixed-point grouting method. Deep hole fixed-point grouting of a directional long drill hole can be achieved, directional drilling difficulty and even drill hole scrapping caused by local hole section stratum breakage are avoided, and the hole forming rate and the hole forming efficiency of the directional drill hole are improved.
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Description

Technical field

[0001] The present invention relates to directional drilling underground mine, and more particularly, to a coal mine directional drilling long recyclable pointing grouting apparatus and method.

[0002] technical background

[0003] With the development of coal mine directional drilling technology and equipment, directional drilling its trajectory control, high precision drilling, effective long distance, etc., applied to coal mine gas drainage, water damage prevention, geological exploration, and many other abnormal body areas, the protection of mine safety and efficient production play an important role in promoting.

[0004] Directional drilling underground mine strata Art different purposes and different sets borehole formed technology solutions to meet the basic needs of conventional drilling directional drilling, the formation of complex formation for directional drilling the aperture segment drilling large curvature, large when the diameter reaming, grouting...

Examples

Embodiment Construction

[0044] DRAWINGS Below, further detailed description of the technical solution of the present invention through specific embodiments.

[0045] See figure 1 A coal mine borehole retrievable directional length grouting pointing device, a large-diameter drill pipe 1, the rubber plug 2, a small diameter drill rod 3, a metal plug 4, the water will bypass the check valve 8 and the 5 composition.

[0046] Large-diameter drill of the present embodiment is selected to be within the level of formula 1, i.e. flat large-diameter drill pipe; small diameter drill may be chosen to the level of formula 3, i.e. the level of the small-diameter drill pipe.

[0047] The rubber stopper 2 and a metal plug provided with a through-hole 4, the large-diameter drill pipe 1 is slightly larger than the inner diameter of the outer diameter of the plug 4 to the metal, the metal is slightly larger than the outer diameter of plug 4 2 the inner diameter of the rubber stopper, the said large-diameter rod with a rubb...