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Hole bottom fixing device and method utilizing hole bottom fixing device to put sleeve in coal seam for extraction

A fixing device and hole bottom technology, which is applied in drilling equipment and methods, earthwork drilling, drilling equipment, etc., can solve the problems of tediousness, many accidents in the hole, time-consuming and laborious, etc., and achieve simple and reasonable structure design. Guaranteed grip

Pending Publication Date: 2017-07-14
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When drilling in geological anomalies such as soft coal seams, broken coal seams, and fault fracture zones, it is difficult to discharge slag and the stability of the hole wall is poor, resulting in many accidents in the hole such as drill sticking and buried drilling.
The rapid pipe running process requires that after the casing is lowered to the bottom of the hole, since there is no rooting point at the inner end, the hole protection flower pipe is easily taken out by the drill pipe during the drilling process; it must be manually The method of resisting or resisting the casing again is cumbersome, time-consuming and labor-intensive

Method used

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  • Hole bottom fixing device and method utilizing hole bottom fixing device to put sleeve in coal seam for extraction
  • Hole bottom fixing device and method utilizing hole bottom fixing device to put sleeve in coal seam for extraction
  • Hole bottom fixing device and method utilizing hole bottom fixing device to put sleeve in coal seam for extraction

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Effect test

Embodiment 1

[0029] combined with Figure 1-Figure 3 , a hole bottom fixing device of the present invention, comprising a cylinder 1, a plurality of bar-shaped grooves 2 are evenly opened on the circumferential surface of the cylinder 1, and several fixed wings 3 equal in number to the bar-shaped grooves 2 are also included. The fixed wing 3 is installed in the strip groove 2, one end is rotatably connected to the bottom of the strip groove 2, and the length of the other end can be received in the strip groove 2.

[0030] Further, one end of the strip groove 2 is provided with a rotating shaft 4, and one end of the fixed wing 3 has a shaft hole, and the shaft hole is connected with the rotating shaft, and one end of the fixed wing 3 rotates inside the strip groove 2 Connect, realize the opening of fixed wing 3 by the gravity of fixed wing 3 self here;

[0031] Further, there are four strip grooves 2 and four fixed wings 3 .

[0032] Further, one end of the cylinder 1 is also fixedly conn...

Embodiment 2

[0044] combined with Figure 1-Figure 4 , a hole bottom fixing device of the present invention, comprising a cylinder 1, a plurality of bar-shaped grooves 2 are evenly opened on the circumferential surface of the cylinder 1, and several fixed wings 3 equal in number to the bar-shaped grooves 2 are also included. The fixed wing 3 is installed in the strip groove 2, one end is rotatably connected to the bottom of the strip groove 2, and the length of the other end can be received in the strip groove 2.

[0045] Further, one end of the fixed wing 3 is connected to the torsion spring 5, and the torsion spring 5 is connected to one end of the strip groove 2 through the pin shaft 6, and the fixed wing 3 is normally opened by the action of the torsion spring 5;

[0046] Further, there are four strip grooves 2 and four fixed wings 3 .

[0047] Further, one end of the cylinder 1 is also fixedly connected with a second cylinder 7 with a diameter smaller than that of the cylinder 1, the...

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Abstract

The invention provides a hole bottom fixing device and a method utilizing hole bottom fixing device to put a sleeve in a coal seam for extraction and relates to the technical field of mining. The hole bottom fixing device comprises a column body. A plurality of strip-shaped grooves are formed uniformly in the circumferential surface of the column. The hole bottom fixing device further comprises fixed wings with the number being equal to the number of the strip-shaped grooves. The fixed wings are mounted in the strip-shaped grooves, one ends of the fixed wings are rotatably connected at the bottoms of the strip-shaped grooves, and the other ends of the fixed wings can be collected in the strip-shaped grooves. The hole bottom fixing device is reasonable in structural design and can be applied to fixing the sleeve after putting of the sleeve in the soft coal seam, and when the drill is withdrawn, the drill does not take out the sleeve.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a hole bottom fixing device and a coal seam casing drainage method using the device. Background technique [0002] With the expansion of coal mine production scale and the continuous increase of mining depth, the geological conditions of mines are becoming more and more complex. When drilling in geological anomalies such as soft coal seams, broken coal seams, and fault fracture zones, it is difficult to discharge slag, and the stability of the hole wall is poor, resulting in many accidents in the hole such as drill sticking and buried drilling. The rapid pipe running process requires that after the casing is lowered to the bottom of the hole, since there is no rooting point at the inner end, the hole protection flower pipe is easily taken out by the drill pipe during the drilling process; it must be manually The method of resisting or resisting the casing again is cumbersome, tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01E21B7/20
CPCE21B7/20E21B23/01
Inventor 王康健葛新玉刘宇飞李磊王磊
Owner HUAINAN MINING IND GRP
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