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Multi-section anchoring automatic yielding anchor rod and anchoring method

A technology of yielding bolts and anchoring, which is applied in the installation of bolts, earthwork drilling, mining equipment, etc. It can solve the problems of overall anchorage failure and deformation of the anchorage area of ​​the anchorage, and achieve the prevention of anchoring agent failure, simple application and operation, The effect of preventing anchor failure or anchor rod breaking

Active Publication Date: 2019-07-09
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the local deformation of the anchorage area of ​​the anchor rod leads to the failure of the overall anchorage, the present invention provides a multi-section anchorage automatic yielding anchor rod and an anchoring method. The specific technical scheme is as follows

Method used

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  • Multi-section anchoring automatic yielding anchor rod and anchoring method
  • Multi-section anchoring automatic yielding anchor rod and anchoring method
  • Multi-section anchoring automatic yielding anchor rod and anchoring method

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Embodiment Construction

[0023] to combine Figure 1 to Figure 3 As shown, the present invention provides a multi-segment anchorage automatic yielding anchor rod and an anchoring method. The specific implementation is as follows.

[0024] The specific structure of a multi-stage anchoring automatic yielding anchor rod includes a rod body 1, a tray 2, a lock nut 3, a yielding sleeve 4, an annular tooth cutter 5, an annular rubber ring 6 and a yielding block 7, such as figure 1 shown. Set the pressure relief sleeve 4 and the pressure relief block 7 on the rod body 1 to achieve multi-section anchoring, and set the annular rubber ring 6 to prevent the eccentricity of the anchor rod during installation and the anchoring agent in the middle to flow into the free section. The annular tooth cutter 5 can The anchoring agent stirs quickly and strengthens the anchoring effect.

[0025] The anchor rod body 1 is welded with a pressure block 7, and the connection strength between the pressure block 7 and the rod b...

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Abstract

The invention provides a multi-section anchoring automatic yielding anchor rod and an anchoring method, and relates to the technical field of yielding anchor rods. The anchor rod comprises a rod body,a tray, a lock nut, a yielding sleeve, an annular serrated knife, an annular rubber ring and a yielding stop block; the yielding stop block is welded to the anchor rod body, and the connection strength between the yielding stop block and the rod body is smaller than the tensile strength of the anchor rod; and the yielding sleeve is further arranged on the rod body, and the annular rubber ring andthe annular serrated knife are arranged on the yielding sleeve. When the anchor rod is used for anchoring, firstly, roadway surrounding rock is drilled, and the hole diameter is equal to the outer diameter of the annular rubber ring; secondly, an anchoring agent is installed on the yielding sleeve in the middle of the anchor rod body, then a drilling machine is used for driving the rod body to rotate; and finally the lock nut and the tray are arranged, and pre-tightening force is applied, so that the anchor rod realizes multi-section automatic yielding after anchoring. The technical problem that the whole anchor rod loses efficacy due to local deformation of surrounding rock is solved, and the anchor rod has the advantages of being high in adaptability, easy to operate and the like.

Description

technical field [0001] The invention relates to the technical field of yielding bolts, in particular to a multi-segment anchoring and automatically yielding bolt, and a method for anchoring surrounding rock by using the bolt. Background technique [0002] With the increase of large-scale mining and mining depth, compared with shallow tunnel engineering, deep engineering rock mass is in a complex geomechanical environment with high ground pressure, high temperature, high karst water pressure and strong mining disturbance. After the excavation of the deep roadway, the deformation of the surrounding rock is large, the deformation characteristics are complex, and the control is difficult. The end anchoring commonly used in the shallow part is prone to unanchoring and the bolt is pulled out under the strong deformation of the surrounding rock; later, the full-length anchoring bolt is used to increase the anchoring force of the bolt through the full-length anchoring, but due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02
CPCE21D20/02E21D21/0026E21D21/0093
Inventor 蒋宇静陈永强栾恒杰王亚华颜鹏王刚蒋力帅
Owner SHANDONG UNIV OF SCI & TECH
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