Coal rock damage electromagnetic radiation direction finding and positioning system

Abstract

The invention discloses a coal rock damage electromagnetic radiation direction-finding positioning system, which comprises a three-axis electromagnetic sensor array, a signal acquisition module and a direction-finding positioning terminal, wherein the three-axis electromagnetic sensor array is composed of at least four three-axis electromagnetic sensors, and is used for synchronously sensing the magnetic field intensity in three-axis directions based on a tunnel magnetoresistance technology and measuring the space real magnetic field vector; the signal acquisition module is used for acquiring magnetic field vector change information of a plurality of measuring points in real time, extracting magnetic field vector change parameters and transmitting the magnetic field vector change parameters to the direction-finding positioning terminal; and the direction-finding positioning terminal is used for carrying out direction-finding positioning calculation according to the received magnetic field vector change parameters, and carrying out three-dimensional dynamic visual display on a positioning result, positioning time and positioning coordinates. According to the invention, the tunnel magnetoresistance technology is used for direction finding and positioning of coal rock damage electromagnetic radiation; therefore, accurate monitoring and early warning of the coal and rock dynamic disasters are realized, and the method has great significance in prevention and control of the coal and rock dynamic disasters.

Description

technical field [0001] The invention relates to the technical field of coal-rock dynamic disaster prevention and control, in particular to a coal-rock damage electromagnetic radiation direction finding and positioning system. Background technique [0002] Coal-rock dynamic disaster is one of the main disasters in coal mines. As the mining depth continues to increase, the frequency, intensity, and degree of damage of coal-rock dynamic disasters are on the rise, and the number of occurrences and casualties are also on the rise. Electromagnetic radiation generated by coal deformation and fracture is a relatively common physical phenomenon. As a very promising geophysical method, the electromagnetic radiation method has achieved considerable results in recent years in terms of the mechanism of coal-rock failure electromagnetic radiation, signal characteristics, application status and influencing factors of coal-rock dynamic disaster prediction. [0003] At present, coal-rock e...

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Problems solved by technology

[0003] At present, coal-rock electromagnetic radiation technology mainly realizes the monitoring and early warning of rock burst disasters by analyzing the time series changes of electromagnetic precursor signals, but it cannot realize the location of disaster-pregnant areas and cannot guide the precise implementation of prevention and control measures, which has become a key technical bottleneck that needs to be broken through.

In addition, the electromagnetic radiation signal generated by the coal rock failure process can only be received passively, and the frequency and intensity of electromagnetic waves change with time, it is difficult to directly apply the existing electromagnetic radiation receiving device and positioning technology to realize the direction finding and positioning of coal rock damage

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