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Graded tensile anchor rod and supporting system

A bolt and rod body technology, which is used in the installation of bolts, mining equipment, earth drilling and mining, etc., can solve the problem of small application range of bolts

Pending Publication Date: 2021-06-08
华能煤炭技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first object of the present invention is to provide a graded tensile anchor to solve the technical problem of the small applicable range of the anchor existing in the prior art

Method used

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  • Graded tensile anchor rod and supporting system
  • Graded tensile anchor rod and supporting system
  • Graded tensile anchor rod and supporting system

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Embodiment Construction

[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] This embodiment provides a graded tensile anchor, such as figure 1 and figure 2 As shown, the graded tensile anchor includes a rod body 100, a fastening assembly and at least one sleeve 200. Along the axial direction of the rod body 100, the two ends of the rod body 100 are respectively a fastening end 110 and a connecting end 120. The fastening assembly can Installed on the fastening end 110 and fastening the rod body 100 to the surrounding rock 400; each sleeve 200 is sleeved on the outside of the rod body 100 layer by layer, between the rod body 100 and the adjacent sleeve 200 ...

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Abstract

The invention provides a graded tensile anchor rod and a supporting system, and relates to the field of mine roadway protection devices. The graded tensile anchor rod comprises a rod body, a fastening assembly and at least one sleeve, wherein the two ends of the rod body serve as a fastening end and a connecting end respectively in the axial direction of the rod body, and the fastening assembly can be arranged at the fastening end and fasten the rod body to surrounding rock; and the sleeves are arranged outside the rod body in a sleeving mode layer by layer, the rod body and the adjacent sleeves can slide relatively, every two adjacent sleeves can slide relatively, and the sleeves can be fixedly connected with the rod body or the adjacent sleeves. According to the graded tensile anchor rod, in the process that the surrounding rock is subjected to tension deformation or even cracks are formed, relative slippage can occur between every two adjacent sleeves or between the sleeves and the rod body, then grading of the sleeves and the rod body is achieved, and therefore, the graded tensile anchor rod can adapt to large deformation of the surrounding rock through graded deformation of the graded tensile anchor rod; and pretightening force is continuously provided during surrounding rock deformation, so that large anchoring force is kept after surrounding rock deformation, and the application range is large.

Description

technical field [0001] The invention relates to the technical field of mine roadway protection devices, in particular to a graded tensile bolt and a support system. Background technique [0002] In the prior art, bolts are usually used to anchor the surrounding rock of the roadway. However, the scope of application of the bolts in the prior art is small, and under the conditions of relatively large deformation of the surrounding rock such as mine soft rock, large buried depth, and large mining height, etc. not applicable. Contents of the invention [0003] The first object of the present invention is to provide a graded tensile anchor to solve the technical problem of the narrow application range of the anchor existing in the prior art. [0004] The graded tensile anchor provided by the present invention includes a rod body, a fastening assembly and at least one sleeve. Along the axial direction of the rod body, the two ends of the rod body are respectively fastening ends...

Claims

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Application Information

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IPC IPC(8): E21D21/00E21D20/02
CPCE21D21/0033E21D20/02Y02A10/23
Inventor 马新根陈良发李永元顾雷雨李朝孙福龙栗磊冯来宏胡金柱
Owner 华能煤炭技术研究有限公司
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