Coal mine roadway support normalization auxiliary monitoring device and method based on bolt linkage

Abstract

The invention discloses an auxiliary monitoring device and method for normalization of coal mine roadway support based on bolt linkage, and relates to the technical field of coal mine roadway support. In the present invention, several anchor rods are sequentially connected with electrically conductive pull wires in a tensioned state, and the conductance pull wires include stranded wire bodies that are staggeredly distributed among several anchor rods. The loop outgoing line and incoming line end of the anchor rod are jointly connected to the main processing module; the exposed rod of the anchor rod is reinforced and connected with a main fixing base, and the two sides of the main fixing base are fixed and symmetrical with side fixing rods. The present invention collects the standard electric energy information during installation by using the tensioned conductance cable, and then performs state comparison, analysis and judgment when any anchor rod in the inner loop of the conductance cable is abnormal, and through the targeted arrangement of the conductance cable loop, forms The linkage type and spreading type multi-bolt point geotechnical condition monitoring realizes the overall safety monitoring of the roadway.

Description

technical field [0001] The invention belongs to the technical field of coal mine roadway support, and in particular relates to a normalized auxiliary monitoring device and method for coal mine roadway support based on bolt linkage. Background technique [0002] Underground mining is the main method of coal mining in my country. Underground mining requires a large number of tunnels to be excavated underground. Using tunnel support to keep the tunnel smooth and the surrounding rock stable is of great significance to the construction and production of coal mines. The basic purpose of supporting the roadway is to ease and reduce the movement of surrounding rock, so that the section of the roadway will not be excessively reduced, and at the same time prevent the scattered and damaged surrounding rock from falling. [0003] In the support structure of the coal mine roadway, the bolt is the most basic part of the roadway support in the contemporary coal mine. The bolt strengthens t...

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Problems solved by technology

[0004] However, the rock and soil around the roadway are affected by some unstable factors, and a certain amount of deviation occurs in the surrounding rock of the roadway, which easily leads to a certain amount of state and position changes of the bolt along with the surrounding rock. Although some knowledge of the local surrounding rock and anchor There will be a certain amount of state and position changes of the pole, but there will be a big safety hazard for the overall support of the roadway

[0005] There are also some bolts that are not stable enough during installation. When there are factors such as mining and blasting in the roadway or around the rock and soil, the anchor rods that are not installed firmly will also shift a small amount, which will also affect the current position of the roadway. Maintain overall safety performance

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