Thin coal seam bedding long drill hole extraction system and method
A technology of long drilling and thin coal seam, which is used in earth-moving drilling, mining equipment, wellbore/well components, etc. Mining concentration and service life, the effect of improving the rigor
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[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention. examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0027] like figure 1 As shown in the figure, the embodiment of the present invention discloses a thin coal seam long-drainage drilling system along the bed, including a structure in the hole, and the structure in the hole includes an outer plug 1, an inner plug 2, a grouting pipe 3, and a grouting pipe 4. Polyurethane injection pipe 5, orifice connection device 6, extr...
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