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Anti-rock burst wave-absorbing energy dissipation anchor pole

A rockburst and bolt technology is applied in the field of rockburst-proof, wave-absorbing and energy-consuming bolts, which can solve the problems of low rockburst vibration and disturbance performance, low support reliability, etc. The effect of destroying and enhancing the strength of surrounding rock

Active Publication Date: 2016-08-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an anti-rockburst wave-absorbing energy-consuming bolt, which solves the technical problems in the prior art that the accumulated energy of the rock cannot be actively dissipated, the reliability of the support is not high, and the anti-rockburst vibration and disturbance performance is low.

Method used

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  • Anti-rock burst wave-absorbing energy dissipation anchor pole

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Embodiment Construction

[0019] The embodiments of the present application provide a rockburst-proof wave-absorbing and energy-consuming bolt to solve the problem of ignoring rockburst prevention in the prior art, especially ignoring the factors that dominate rockburst occurrence, such as rock mass cracking, tensile failure, and stress disturbance. The technical problems of low protection reliability and low performance against rockburst vibration and disturbance have been achieved; the technical effect of absorbing the stress wave of rock mass and the energy released during the cracking process, inhibiting rockburst cracking and preventing rockburst has been achieved.

[0020] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0021] A wave-absorbing energy-dissipating anchor rod for preventing rockbursts, comprising: an anchor head, a wave-absorbing damper, a rod body, a tray, and fastener...

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Abstract

The invention belongs to the tunnel support technical field, and discloses an anti-rock burst wave-absorbing energy dissipation anchor pole comprising an anchor head, a wave-absorbing damper, a rod body, a tray and a fastener; the wave-absorbing damper is connected between the anchor head and the rod body; when the rod body axially moves relative to the anchor head, the wave-absorbing damper can move to resist the rod body motions, thus restoring initial state of the rod body. The anti-rock burst wave-absorbing energy dissipation anchor pole can prevent rock cracking, tension damages and rock burst, can prevent rock burst, and can limit the rock burst scale.

Description

technical field [0001] The invention relates to the technical field of roadway support, in particular to a wave-absorbing and energy-consuming bolt for preventing rockbursts. Background technique [0002] Bolt support is the most commonly used support method in the excavation process of underground space, and it can maintain the stability of surrounding rock. [0003] When the buried depth is extremely large and the ground stress is extremely high, rockburst disasters are likely to be induced by excavation and unloading. If the development of rock mass cracking is not actively reduced during the gestation process of rock burst, the rock mass will gradually crack and even form blocks. When the energy in the rock mass is released suddenly, rock burst will easily occur. When a rockburst occurs in the surrounding rock in an unsupported state, on the one hand, a block with a very high speed will be ejected to the excavation space. Conventional bolts, such as pipe-slotted bolts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
CPCE21D21/00
Inventor 冯夏庭赵日茂王兆丰刘继光
Owner NORTHEASTERN UNIV
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