Umbrella contraction type anti-falling anchor rod structure and using method

Abstract

The invention discloses an umbrella contraction type anti-falling anchor rod structure and a using method. The umbrella contraction type anti-falling anchor rod structure comprises an anchor rod body,a sleeve arranged outside the anchor rod body in a sleeving mode, a plurality of supporting bodies connected with the sleeve and an umbrella arm. A threaded part is arranged at the end, away from thesupporting bodies, of the anchor rod body and connected with a nut, and a first circular ring is fixed to the other end of the anchor rod body. One end of the umbrella arm is hinged to the first circular ring, one end of each supporting body is hinged to the sleeve, and the other end of each supporting body is connected with the middle of the umbrella arm through a hinge piece. The nut is screwedto push the sleeve to open the supporting bodies and the umbrella arm, and thus the umbrella arm is fully embedded into rock and soil. According to the umbrella contraction type anti-falling anchor rod structure and the using method thereof, the umbrella contraction type anti-falling anchor rod structure can be recycled and directly makes contact with the rock and soil without grouting, falling of an anchor rod is prevented, the manufacturing mode and the operation mode are simple, construction is easy, and the anchoring force is high.

Description

technical field [0001] The invention belongs to the technical field of slope support, and in particular relates to an umbrella retractable anti-loosening bolt structure and a using method. Background technique [0002] With the rapid development of infrastructure construction, bolts, as a fast anchoring component, play a key role in the reinforcement of rock and soil and bring convenience to engineering construction. During construction, the original stress field balance of the rock and soil mass is broken after excavation, resulting in structural instability. The formation of a new stress field requires external forces to achieve stability. The anchoring force of the anchor rod is the most common external force for the balance of the new stress field. Due to its simple structure, easy construction and wide range of use, the pole is widely used in construction sites such as slope treatment, road and bridge, underground space engineering, tunnel engineering, and coal mining r...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art that the bolt cannot be recycled, the bolt has been corroded in the rock and soil for a long time, the anchoring force has decreased, and the manufacture and operation of the bolt are complicated. And the method of use, recyclable, no need for grouting to directly contact the rock and soil, can solve the problem of the anchoring force drop caused by the long-term corrosion of the traditional anchor in the rock and soil, the production method and operation method are simple, easy to construct, High anchoring force

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