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A kind of mining chemical anchor cable anchor withdrawal device and method

An anchor cable and chemical technology, applied in mining equipment, earth square drilling, installation of bolts, etc., to achieve the effects of simple structure, improved stress environment, and reduced labor intensity

Active Publication Date: 2017-04-12
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to address the defects of existing mechanical anchor removal methods, and propose a mining chemical anchor cable anchor removal device and method, using chemical anchor cables to artificially control the failure time of the anchor body, so as to achieve safe anchor removal Effect

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  • A kind of mining chemical anchor cable anchor withdrawal device and method
  • A kind of mining chemical anchor cable anchor withdrawal device and method
  • A kind of mining chemical anchor cable anchor withdrawal device and method

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Embodiment Construction

[0027] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0028] The mine-used chemical anchor cable anchor withdrawal device of the present invention is mainly composed of a drug bag 2, a diversion pipe 3, a throttle valve 4, a lock 6, a special anchor ring 7 and a joint tray 8. The lock 6 and the tray 8 are worn on the exposed section of the anchor cable 1, and the special anchor ring 7 is arranged between the lock 6 and the tray 8, and the radial direction of the special anchor ring 7 is provided with two asymmetric guides up and down. Orifice 5, a diversion hole 5 on the upper part is provided with a diversion tube 3, and the diversion tube 3 is connected with the medicine pack 2 arranged on the top plate 9, and the medicine pack 2 is filled with a mixture with a concentration of 5-12mol / L Acid liquid; the said guide pipe 3 is provided with a throttling valve 4 .

[0029] The method for withdrawing the anchor...

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Abstract

A mining chemical anchor cable anchor-unhooking apparatus, applicable in anchor-unhooking operations for in tunnels, primarily comprising four parts, namely an explosive charge (2), a diversion tube (3), a specially-made anchor ring (7), and a throttle (4). An acidic solution in the explosive charge (2) is introduced via the diversion tube (3) into a gap between the specially-made anchor ring (7) and an anchor cable (1), the acidic solution corrodes and weakens the anchor cable, and a liquid waste from the reaction is discharged via a diversion hole (5) at the lower side of the specially-made anchor ring (7). Then, a lagging mining pressure is utilized to implement an anchor-unhooking effect. The rate of corrosion can be set by means of controlling the flow rate of the throttle (4) or the concentration of the acidic solution in the explosive charge (2), thus adjusting the time to failure of the anchor cable (1). The apparatus simplifies an anchor-unhooking construction technique, reduces labor intensity for workers, allows artificial control of the time to failure of anchoring, increases the safeness of an anchor-unhooking process, and is structurally simple and easy to promote. Also disclosed is a mining chemical anchor cable anchor-unhooking method.

Description

technical field [0001] The invention relates to a mine-used chemical anchor cable anchor withdrawal device and method, and is especially suitable for the anchor withdrawal operation of roadways. Background technique [0002] Coal roadway bolt and cable support is a support method commonly used in my country. It has the advantages of simple operation and good support effect, but it will also cause a large area of ​​​​the end of the working face to hang from the roof, resulting in the accumulation of gas at the end. Roof and gas management bring great hidden dangers. Therefore, how to ensure that the roof does not collapse before the working face is pushed over, and how to collapse in time after the working face is pushed over is an urgent problem to be solved for the coal roadway support. For this reason, often carry out the operation of moving back anchor in the coal mining operation process. [0003] At present, mechanical anchor withdrawal is widely used, and there are ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/00
CPCE21D20/00
Inventor 张农张天池徐骁勇潘东江
Owner CHINA UNIV OF MINING & TECH
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