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A coal seam drilling and fixing device

A technology for fixing holes and coal seams, applied in drill pipes, drill pipes, drilling equipment, etc., can solve problems such as drilling blockage and scrapping, reduce man-hours and material waste, improve the qualified rate of drilling holes, and solve the problem of hole collapse and blockage. Scrap effect

Inactive Publication Date: 2018-05-22
HENAN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies in the prior art, the present invention provides a coal seam drilling and fixing device that mechanically reinforces the hole wall while drilling, which can effectively solve the problems caused by coal seam drainage drilling. The technical problem of drilling blockage and scrapping caused by hole collapse

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  • A coal seam drilling and fixing device
  • A coal seam drilling and fixing device
  • A coal seam drilling and fixing device

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Embodiment Construction

[0027] Such as Figure 1-Figure 5 As shown, a coal seam drilling and fixing device of the present invention includes a cylindrical body 1 with a central passage, and the two ends of the cylindrical body 1 are coaxially provided with a male connector 2 and a female connector 3 respectively. 1. The outer surface is evenly provided with at least two telescopic fixed hole structures along the circumferential direction.

[0028] Each telescopic fixed hole structure includes a long slot 15 opened along the axial direction of the cylinder 1, and the bottom of the long slot 15 on the cylinder 1 is provided with a through hole 4 whose length and width are smaller than the long slot 15. 15 is provided with a bidirectional conical rotor 5 protruding from the outer surface of the cylindrical body 1, the side of the bidirectional conical rotor 5 is symmetrically provided with a first guide plate 6 along the length direction, and the side of the bidirectional conical rotor 5 is along the T...

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Abstract

The invention discloses a hole fixing device for drilling a coal seam. The hole fixing device comprises a cylinder with a central channel, wherein a convex connecting part and a concave connecting part are arranged at two ends of the cylinder in the same axial direction respectively; and at least two retractable hole fixing structures are uniformly arranged on the outer surface of the cylinder along the peripheral direction. The hole fixing device disclosed by the invention can be used for fixing a drilled hole in a drilling process; a wall surface of the drilled hole can be fixed in a normal construction and drilling process, so as to protect the drilled hole, and a condition that the drilled hole is scrapped, caused by the fact that a hole wall in the hole collapses to block the hole, is prevented; the drilling and hole forming yield is remarkably improved, extra procedures are not needed, and extra material consumption is not caused, so that the wastes of labor hours and materials are greatly reduced; and the drilling and extraction time is effectively prolonged, the gas extraction effect is improved, and the problem that the drilled hole is scrapped due to hole collapsing and blocking in a coal seam extraction process is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of coal seam drilling engineering, and in particular relates to a coal seam drilling and fixing device capable of reinforcing boreholes during coal seam drilling. Background technique [0002] When drilling coal seams in coal mines, especially in the construction of gas drainage drilling, hole collapse often occurs, which easily makes the drilling scrapped, reduces the hole formation rate, and causes great waste. Gas disaster safety accidents have seriously affected safe production. In some mines, screens of polymer materials are placed in the holes to prevent the holes from collapsing and blocking the drill holes. The cost of labor and materials is very high; moreover, as the coal is broken during mining, the screens become sundries and mix into the coal, which will not only cause Reduce the coal quality, and the screen pipe impurities will seriously pollute the atmosphere when the coal is burned. So far,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00E21B17/042E21B17/10
CPCE21B17/00E21B17/042E21B17/1014
Inventor 许彦鹏程永新王兆丰边强刘发义吕高磊郭振宇李洪杰
Owner HENAN POLYTECHNIC UNIV
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