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A Large Deformation Prestressed Anchor Rod

A prestressed, large deformation technology, applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of inconvenient construction, poor anchoring effect, complex structure, etc., and achieve low cost, convenient installation, and good working mechanical properties Effect

Active Publication Date: 2016-07-20
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition to the above research and results, there are still many researches and products on large-deformation prestressed anchor rods that have not been retrieved. However, due to the complex structure, poor anchoring effect and inconvenient construction, these anchor rods have not been popularized and applied in engineering.

Method used

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  • A Large Deformation Prestressed Anchor Rod
  • A Large Deformation Prestressed Anchor Rod
  • A Large Deformation Prestressed Anchor Rod

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The following combination Figure 2 to Figure 5 , the present invention is further described:

[0029] Depend on figure 2 It can be seen that a large deformation prestressed anchor rod includes a slotted capped cylinder 1 , a tapered wedge 2 , a gasket 3 , a lock nut 4 , and an anchor rod body 5 . The anchor rod body 5 passes through the slotted capped cylinder 1, the tapered wedge 2, the gasket 3, and the lock nut 4 in sequence, the slotted capped cylinder 1 is embedded in the drilling hole, and the slotted capped cylinder 1 Matching with the tapered wedge 2 through frictional contact, the front end of the tapered wedge 2 is inserted into the slotted capped cylinder 1, and finally locked and fixed by the washer 3 and the lock nut 4 from the outside.

[0030] Depend on image 3 It can be seen that the anchor rod body 5 includes an anchor segment 5A, a free segment 5B and an outer anchor segment 5C. The anchoring section 5A is connected with the free section 5B, and...

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Abstract

The invention discloses a large-deformation prestressed anchor rod, which comprises a slotted capped cylinder, a tapered wedge, a gasket, a lock nut, and an anchor rod body. The anchor rod passes through the slotted capped cylinder, Conical wedge, gasket, lock nut, slotted capped cylinder inserted into the drill hole, slotted capped cylinder and conical wedge match through frictional contact, and the front end of the conical wedge is inserted into the slotted belt The cap cylinder, gasket and lock nut are locked and fixed from the outside. The anchor rod body is a threaded solid steel bar or hollow steel pipe, one end of the anchor rod body is twisted or straight, the middle part of the anchor rod body is sinusoidal, and the other end of the anchor rod body has an external thread. Simple structure, convenient operation, strong deformation ability, anti-loosening function, good working mechanical properties, low cost, easy processing, convenient installation, especially suitable for underground projects such as coal mines and tunnels.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering anchoring, and more specifically relates to a large-deformation prestressed anchor rod, which is suitable for coal mines, highway tunnels and slope engineering, and other geotechnical engineering involving weak rock mass anchoring and support, and can be used in surrounding areas. Maintaining a certain anchoring force in the case of large deformation of the rock is conducive to the lasting safety and effectiveness of the anchorage support system. Background technique [0002] During the production and construction of deep underground projects such as coal mines and tunnels, support problems for weak surrounding rocks are often encountered. Due to the large deformation of soft rocks under the action of high ground stress and the long duration, more support measures have been put forward. high demands. At present, anchor bolts are often used to reinforce surrounding rock in enginee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00E21D20/00
Inventor 戴永浩陈卫忠杨建平伍国军田洪铭
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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