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Cone resistive friction sleeve large-deformation anchor rod

A friction sleeve, large deformation technology, applied in the installation of bolts, mining equipment, earth-moving drilling and other directions, can solve the problems of low elongation, unsatisfactory constant resistance effect of large deformation bolts, poor supporting effect, etc. To achieve the effect of ensuring the support effect

Active Publication Date: 2011-06-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a large-deformation anchor rod with a cone-resistance friction sleeve, which overcomes the problems of low elongation and poor support effect of the existing traditional anchor rods, and at the same time overcomes the poor constant resistance effect of the existing large-deformation anchor rods. ideal question

Method used

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  • Cone resistive friction sleeve large-deformation anchor rod
  • Cone resistive friction sleeve large-deformation anchor rod
  • Cone resistive friction sleeve large-deformation anchor rod

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, the present invention includes an outer nut 2, an inner nut 4, a backing plate 3, a bevel tooth friction body 5, a friction sleeve 6, a rod body 8, and the like. The backing plate 3 and the outer nut 2 are sequentially connected to the tail of the friction sleeve 6, wherein a reserved hole 31 is set in the middle part of the backing plate 3 for the friction sleeve 6 to pass through, and the outer nut 2 is connected to the friction sleeve through a thread 61 The barrel 6 and the friction sleeve 6 have a length ranging from 10cm to 150cm, which can be determined according to the allowable displacement of the surrounding rock.

[0036] In order to realize the large deformation performance of the present invention, the inner surface of the friction sleeve 6 is provided with sleeve friction grooves 62, and the sleeve friction grooves 62 ar...

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Abstract

The invention belongs to the field of geotechnical engineering anchoring, and relates to a supporting structure of a large-deformation rock-soil body, in particular relates to an anchor rod. The anchor rod comprises an external nut (2), a base plate (3), a cone-type-tooth friction body (5), a friction sleeve (6) and a rod body (8), and is characterized in that the inner wall of the friction sleeve (6) is provided with a plurality of sleeve friction grooves (62) along a longitudinal direction; and the cone-type-tooth friction body (5) is arranged on the rod body (8). The anchor rod provided bythe invention has the beneficial effects that large deformation of surrounding rock can be automatically adapted so as to automatically extend, and simultaneously the deformation energy of the surrounding rock can be absorbed in the deforming process, thus ensuring the supporting effects of the supporting structure.

Description

[0001] technical field [0002] The invention relates to the field of geotechnical engineering anchoring, and relates to a support structure for large deformation rock and soil bodies, in particular to an anchor rod. [0003] Background technique [0004] Roadway construction in weak surrounding rocks is often faced with large deformations of surrounding rocks converging towards the roadway. Fast damage, both a waste of manpower and material resources, and no support effect. Liu Quansheng and others pointed out in the article "Study on Nonlinear Large Deformation and Support Countermeasures of Cracked Surrounding Rock in Deep Coal Mine" (Rock and Soil Mechanics, No. 10, 2010) that the organizational structure, basic behavior characteristics and engineering response of deep rock mass are different from shallow Fundamental changes have taken place compared with the rock mass in the lower part, which is specifically reflected in the hard and stable surrounding rock in the sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
Inventor 吴顺川高永涛白哲
Owner UNIV OF SCI & TECH BEIJING
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