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An anti-blocking device for a gob water drainage drill hole

An old-fashioned water-draining technology, used in safety devices, drainage, earth-moving drilling, etc.

Active Publication Date: 2011-08-24
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a device for dredging and anti-blocking of old empty water drilling holes, to overcome the labor-intensive, time-consuming and high cost of existing methods. At the same time, it cannot effectively solve the problem of drilling and plugging

Method used

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  • An anti-blocking device for a gob water drainage drill hole
  • An anti-blocking device for a gob water drainage drill hole
  • An anti-blocking device for a gob water drainage drill hole

Examples

Experimental program
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Effect test

Embodiment 1

[0026] see Figure 1-Figure 2 , a kind of old empty water dredging and anti-blocking device for drilling holes, including a drill bit 1, a support tube 2, a pup joint 7 and an expansion mechanism arranged on the support tube 2 connected sequentially from top to bottom, the drill bit 1 and the support tube 2 Both are provided with drain holes and the two are connected by threads, the support pipe 1 and the short joint 7 are connected by splines, the inner diameter of the pipe wall of the support pipe 2 is larger at the top and smaller at the bottom, and a diameter-reducing step is provided at the transition. The expansion mechanism includes an upper support ring 6, a spring 4, a lower support ring 9 and a link mechanism. The upper support ring 6 and the lower support ring 9 are connected to the two ends of the spring 4 respectively, and the two free ends of the two link mechanisms are respectively fixed. On the upper support ring 6 and the lower support ring 9 , two linkage mec...

Embodiment 2

[0032] Due to the complexity of the deposits in the old goaf, if the thickness of the muddy matter is large, a connecting pipe can be added between the drill bit 1 and the support pipe 2 according to its thickness, and the connecting pipe can be a normal core pipe.

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PUM

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Abstract

The invention relates to an anti-blocking device for a gob water drainage drill hole. The invention aims to solve the problems of labor consuming, time consuming, high cost and low efficiency in solving the drill hole blocking in the prior art. The technical scheme provided in the invention is the anti-blocking device for the gob water drainage drill hole. The anti-blocking device for the gob water drainage drill hole comprises a drill bit, a stay tube, a pipe nipple and an expansion mechanism arranged on the stay tube, wherein the drill bit, the stay tube, the pipe nipple and the expansion mechanism are disposed in succession from top to bottom; the drill bit and the stay tube, both being provided with weep holes, are in threaded connection; the stay tube connects with the pipe nipple through a spline; the stay tube has a large internal diameter in the upper part while a small internal diameter in the lower part, with a diameter variation step being arranged in a diameter variation transition area. The expansion mechanism includes an upper support ring, a spring, a lower support ring and link mechanisms, wherein the upper ring and the lower ring are respectively connected to the two ends of the spring, the two free ends of the two link mechanisms are respectively fixed on the upper support ring and the lower support ring; the two link mechanisms are disposed in a vertical sliding chute arranged in the tube wall; and the upper support ring is fixedly connected onto the inner wall of the stay tube.

Description

technical field [0001] The invention belongs to the technical field of mine water exploration and discharge, and relates to a device for dredging accumulated water in a goaf of a mine, in particular to a device for dredging old empty water boreholes and preventing blocking holes in the goaf. Background technique [0002] In the process of coal mine production, after the coal seam is mined, a goaf will be formed. Because the roof falls behind the goaf and the falling objects are not dense and there are gaps, there will be water accumulation in the goaf after a period of time. This kind of water is called old goaf. water. The amount of stagnant water in the old goaf is related to the water supply level near the goaf. Generally, there is stagnant water in the old goaf, and the longer the time, the more the stagnant water will be. Old empty water is one of the basic water hazards faced by mines. The old empty water in the upper layer will threaten the mining of the lower coal s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/00
Inventor 姬中奎刘其声靳德武王新
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP