A method for extracting the first arrival time of mine microseismic signal based on correlation analysis

Abstract

A method for extracting the first arrival time of mine microseismic signals based on correlation analysis belongs to the analysis and processing method of mine microseismic signals. Its function is to intelligently identify the time difference between the two signals, realize automatic shift alignment and judge the correlation of mine microseismic signals. This method is mainly divided into five steps: one is to read the mine microseismic signal; the other is to solve the correlation function of the two mine microseismic signals; The third is to calculate the time difference at the time of maximum correlation according to the solved correlation function; the fourth is to shift one of the signals according to the calculated time difference; the fifth is to solve the correlation coefficient of the aligned microseismic signals of the two mines to judge their correlation sex. The invention preferably solves the problems of intelligently identifying the arrival time difference of mine microseismic signals and judging whether the mine microseismic signals come from the same seismic source.

Description

technical field [0001] The invention relates to a method for analyzing and processing mine microseismic signals, in particular to a method for extracting first arrival time of mine microseismic signals based on correlation analysis. Background technique [0002] In natural earthquakes, engineering blasting, explosions and other shock events, some of the energy will inevitably be converted into shock waves, which will spread around the source of the earthquake. The first arrival wave picking of mine microseismic signals is a very critical and important issue in vibration research. In source location, accurate and fast picking up of the first arrival moment is the basis for accurate source location or signal analysis. The technology of analyzing and processing the collected mine microseismic signals to determine the arrival time of the mine microseismic signal's first arrival is called the first arrival wave picking technology. The first arrival wave picking technology has a...

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Problems solved by technology

[0015] The purpose of the present invention is to address the problems existing in the prior art, to provide a method for extracting the first arrival time of mine microseismic signals based on correlation analysis, to solve the problem of intelligent identification of first arrival time in mine microseismic signal processing, mine microseismic signal alignment and The problem of judging whether the mine microseismic signal comes from the same source

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