An Anti-Collapse Mechanism for Rock Burst Roadway Anchor Rod

Abstract

The invention discloses an anti-collapse mechanism of rock impact roadway bolts, which utilizes an energy-absorbing component to absorb the ejection energy acting on the first torque nut to achieve a first-level anti-collapse, and then uses a part of the remaining energy to act on the second torque nut. Torque nuts to achieve secondary collapse prevention. If the secondary collapse prevention fails, use the suspension components and deceleration components to consume the remaining energy of the anchor rod, energy-absorbing components, the first torque nut and the second torque nut, and the suspension components and the anchor The rod and the deceleration part form a triangular stable structure. When the bolt collapses, it can effectively control the overall fall of the bolt, prevent the bolt from collapsing or reduce the speed of the bolt collapsing, and realize three-level collapse prevention, which can effectively avoid the bolt and torque. The collapse of the nut can hurt people, which improves the safety of operators.

Description

technical field [0001] The invention relates to the technical field of coal mine safety mining, in particular to a ground pressure roadway bolt anti-collapse mechanism for a rock burst roadway. Background technique [0002] Roadway is the area where rock burst occurs the most. According to incomplete statistics, it accounts for more than 80% of the occurrences of rock burst. When rock burst occurs, it often causes serious damage to roadway, equipment damage and even casualties. People often pay attention to how to prevent major accidents caused by ground pressure, but at the same time, the injury accidents caused by bolt ejection cannot be ignored. When the force on the bolt is suddenly loaded, the force on the bolt and the torque nut will suddenly exceed The strength of the support. When the anchor rod and torque nut still have residual load or energy, the anchor rod and torque nut will suddenly eject, which is easy to cause injury to the operator. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-collapse mechanism for ground pressure roadway bolts to solve the problem that when the bolts and torque nuts still have residual load or energy, the bolts and torque nuts will be ejected suddenly, which is easy to cause injury to the operators. question

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