Anchoring device of telescopic recoverable anchor rod and using method of anchoring device

Abstract

The invention discloses an anchoring device of a telescopic recoverable anchor rod and a using method of the anchoring device, and belongs to the field of underground engineering supporting and the technical field of geotechnical engineering. The device comprises an anchor rod, an anchor rod end recycling device, a metal resistance increasing sleeve and an annular tray, wherein the anchor rod end recycling device is composed of a metal support, a sliding metal pipe and an L-shaped high-strength metal clamp, and the anchor rod can be separated from an anchoring device by applying external force to enable the anchor rod to move deeply in the metal resistance increasing sleeve. When a coal mining working face of a coal mine is stoped, the anchor rod needs to be pulled out, and gas explosion caused by sparks generated by cutting of a coal cutter and the anchor rod is prevented; the anchor rod can be pulled out of the anchor hole, the anchor rod can be recycled, economic cost is saved, meanwhile, the situation that the anchor rod is left in a rock-soil body, pollution and the like are caused, and the follow-up underground space development is affected is avoided, and under the condition that the supporting requirement is not affected, the anchor rod has the advantages of being safe to use, convenient and fast to install, environmentally friendly, good in economic benefit and the like.

Description

technical field [0001] The invention relates to an anchoring device of a retractable retractable anchor rod and a method for using the same, and is especially suitable for the field of underground engineering support and the technical field of geotechnical engineering. Background technique [0002] Bolt support is widely used in surface engineering such as slopes and foundation pits and underground engineering such as tunnels, mining, water conservancy and hydropower. As one of the commonly used support forms to support the stability of slopes and surrounding rocks, bolt support has the characteristics of low cost, flexible use and good support effect compared with other support methods. However, the disadvantages of traditional bolts (non-recyclable, low reuse rate, etc.) can no longer be ignored. For example, when the coal mining face is mined in a coal mine, the bolt needs to be pulled out to prevent the coal cutter and the bolt from cutting sparks and causing gas combust...

AI Technical Summary

Problems solved by technology

However, the anchoring device of the existing recoverable anchor technology is still complicated, the reliability of the anchoring device is difficult to guarantee, the fixing section of the anchor is single, and the fixing strength is weakened

In general, the existing recoverable bolts and their recovery devices have problems such as complex construction and high production costs, and there is still a large room for improvement in economic benefits

Therefore, the problem of non-recyclable traditional bolts needs to be effectively solved, and it is urgent to develop a low-cost, easy-to-manufacture, and easy-to-operate recyclable bolt anchoring device.

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