A large deformation self-repairing rockburst resistant bolt

A self-repairing and anti-rockburst technology, which is applied in the installation of bolts, sheet pile walls, mining equipment, etc., can solve the problems of reducing the safety of the support system, increasing the load of the bolt, and accelerating the corrosion rate of the bolt. Simple, Integrity Retaining, Effect of Reliable Anchor Force

Active Publication Date: 2018-07-20
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] All of the anchors mentioned above can achieve the effect of yielding pressure. However, after the surrounding rock is deformed, the broken rock mass increases the load of the anchor. The corrosion rate reduces the safety of the support system

Method used

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  • A large deformation self-repairing rockburst resistant bolt

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Embodiment Construction

[0028] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0029] A large deformation self-repairing anti-rockburst bolt, such as figure 1 As shown, it includes a rod body 1, a pressure relief device 2 and a self-repairing device; the rod body 1 is in a solid cylindrical shape and is made of round steel. The end close to the deep part of the borehole 1a is the head end ( figure 1 The left end shown), with the end of the rod body 1 away from the deep part of the borehole 1a as the tail end ( figure 1 The right end shown), the head end of the rod body 1 is connected with the pressure relief device 2, the tail end of the rod body 1 is connected with the support backing plate 12 and the nut 13 respectively through threads, the support backing plate 12 is a metal support backing plate, and the nut 13 A nut of equal strength is used to thread the rod body 1. A stopper 14 f...

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Abstract

The invention discloses a large-deformation self-repairing anti-rockburst anchor rod, which comprises a rod body, a yielding device and a self-repairing device, wherein the yielding device is sheathed on the head end of the rod body; the outer side of the yielding device is provided with an anchoring agent layer; the self-repairing device comprises a casing pipe and an expansion body pipe, wherein the casing pipe and the expansion body pipe are sheathed out of the rod body; the self-repairing device also comprises a piston, a compression bag, a liquid passing pipe and a pressure bearing check valve, wherein A component adhesive is filled in the compression bag is filled with A component adhesive, B component adhesive is filled in the expansion body pipe is filled with B component adhesive, the casing pipe is positioned on the tail end of the yielding device, the expansion body pipe is positioned on the tail end of the casing pipe, the liquid passing pipe is filled arranged inat the end part, which is near the end part of the casing pipe, of the expansion body pipe, the pressure bearing check valve is arranged in the liquid passing pipe, and the piston and the compression bag are independently arranged in the casing pipe. The invention provides the large-deformation self-repairing anti-rockburst anchor rod which has the advantages of a simple structure, safety and easiness in manufacturing and processing, can provide resistance when a large deformation is generated, and realizes the self-repairing of a rock mass fracture.

Description

technical field [0001] The present invention relates to the field of geotechnical engineering anchoring support, in particular to the field of rockburst prevention, and specifically refers to a large rockburst support that is suitable for surrounding rock support threatened by rockbursts and has practical significance for effectively preventing damage caused by rockbursts. Deformation self-repairing rockburst resistant bolt. Background technique [0002] Rockburst is a phenomenon of dynamic instability induced by certain factors after excavation and unloading of hard and brittle surrounding rock with complete structure under high ground stress conditions, which often causes catastrophic damage to underground engineering. Frequent occurrence is a major engineering disaster recognized by rock mechanics and engineering circles. Research on rockburst control technology is the ultimate goal, which is to propose prevention and control measures for the possibility and intensity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00E02D5/74
CPCE02D5/74E21D21/00E21D21/0093
Inventor 刘士雨俞缙蔡燕燕常方强涂兵雄
Owner HUAQIAO UNIVERSITY
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