Mining monitoring early warning anchor rod

Abstract

The invention discloses a mining monitoring early warning anchor rod arranged in a rock wall. The anchor rod comprises a body and resistance strain gauges arranged on the body, the body comprises a rod body, a supporting plate and a screw cap, one end of the rod body extends into the rock wall, and the resistance strain gauges are uniformly arranged at the parts, extending into the rock wall, of the rod body; the resistance strain gauges are used for detecting the stress borne by different positions of the rod body, the supporting plate and the screw cap sequentially sleeve the portion, outside the rock wall, of the rod body, and the supporting plate is tightly attached to the rock wall; the screw cap is arranged on the outer side of the supporting plate; due to the screw cap, the rod bodyis fixed to the rock wall, a controller is arranged on the supporting plate, and the controller is connected with the resistance strain gauges. The stress state of the anchor rod can be monitored inreal time; when the anchor rod loses efficacy, people can quickly perceive and take corresponding measures to maintain the stability of a roadway support, casualties caused by improper supporting of aroadway are reduced, the safety production level of a mine is improved, and the safety of coal mine personnel and property is guaranteed.

Description

Technical field [0001] The invention relates to the field of mining support equipment, in particular to a monitoring and early warning bolt for mines. Background technique [0002] At present, there are frequent occurrences of unstable roadway support and collapse of roadway roof in coal mines, causing accidents of casualties. Therefore, bolts are commonly used in mines to support the roadway, but the stress after the bolt support cannot be monitored, and it is impossible to judge whether the bolt fails. When the bolt fails, the roof of the roadway still collapses. . Summary of the invention [0003] The purpose of the present invention is to provide a monitoring and early warning bolt for mines, which can monitor the stress of the bolt in real time, and make corresponding support for the roadway according to the state of the bolt and the warning level, thereby preventing the roof of the roadway from collapsing Cause accidents and ensure the safety of coal mine personnel and pro...

AI Technical Summary

Problems solved by technology

[0002] At present, there are frequent occurrences of roadway support instability and roadway roof collapse in coal mines, causing casualties

Therefore, bolts are commonly used to support the roadway under the mine, but the stress suffered by the bolt support cannot be monitored, and it is impossible to judge whether the bolt has failed. When the bolt fails, there is still a phenomenon that the roadway roof collapses

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