Mine microearthquake signal preliminary wave moment extracting method based on correlation analysis

Abstract

The invention discloses a mine microearthquake signal preliminary wave moment extracting method based on correlation analysis, belonging to analytic processing methods of mine microearthquake signals. The mine microearthquake signal preliminary wave moment extracting method has the functions of intelligently identifying a time difference between two signals, realizing automatic displacement and alignment and judging the correlation of the mine microearthquake signals. The mine microearthquake signal preliminary wave moment extracting method mainly comprises the following five steps: firstly, reading the mine microearthquake signals; secondly, solving a correlation function of the two mine microearthquake signals; thirdly, solving a time difference during the maximum correlation according to the solved correlation function; fourthly, displaying one signal according to the calculated time difference; and fifthly, solving a correlation coefficient of the two aligned mine microearthquake signals, and judging the correlation. According to the mine microearthquake signal preliminary wave moment extracting method, the problems of intelligently identifying the time difference of arrival of the mine microearthquake signal and judging whether the mine microearthquake signals come from the same focus are preferably solved.

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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