Automatic microearthquake focus positioning method

Abstract

The invention relates to an automatic microearthquake focus positioning method. The automatic microearthquake focus positioning method comprises the step of establishing k quaternary linear equation sets according to acquired information of n effective channels, wherein n represents the number of the effective channels and is larger than or equal to four; the step of solving all of the quaternary linear equation sets to obtain l sets of results, wherein l is smaller than or equal to k; the step of respectively substituting the l sets of results into a focus positioning target equation to obtain n deviation values corresponding to the effective channels; the step of judging whether the n deviation values are in the error range or not, where if yes, the deviation target function value F(x0, y0, z0) in the focus positioning target equation is output, and if not, the information of the effective channels corresponding to the deviation values not in the error range in the deviation values is changed; the step of establishing the k quaternary linear equation sets according to acquired information of the n effective channels. The automatic microearthquake focus positioning method is achieved through a computer, and time and labor are saved.

Description

technical field [0001] The invention relates to the field of microseismic detection, in particular to an automatic positioning method for a microseismic source. Background technique [0002] When there are rock formation failure events such as cracks in coal mining activities, the instantaneous rupture of the rock mass will excite elastic waves. These elastic waves carry the information of the seismic source, and rely on the elastic medium of the rock mass to propagate to the surroundings. Mine microseismic monitoring is to use vibration sensors to measure these elastic wave signals at a distance, and determine the occurrence time, spatial location, scale, intensity and nature of the rupture according to the characteristics of the monitored microseismic signals, and make effective and reasonable early warnings. Due to its three-dimensional and real-time characteristics, it has broad application prospects in mining, geotechnical, water conservancy and hydropower projects, an...

AI Technical Summary

Problems solved by technology

[0003] The traditional calculation of source location will transform the target equation of source location into a problem of solving a quaternary linear equation. In theory, given the known coordinates of the geophone and the position of the scale, the solution of the equations can be obtained. In fact, although The multiple equations constructed can find multiple solutions, but there may not be a solution that satisfies the objective function. This requires the coordinates of the geophone and our marking of the position of the scale to be as accurate as possible. In this way, when the position is marked, a certain line is found When the channel objective function is large, it is necessary to re-label the channel

For multiple channels, the exact location of each channel must be marked, which is time-consuming and laborious

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