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An optimization method for locating parameters of micro-earthquake source

A seismic source positioning and microseismic technology, which is applied in the field of information processing, can solve the problems of non-unique positioning results, long positioning time, and low positioning accuracy, and achieve the effects of high positioning accuracy, fast convergence speed, and elimination of adverse effects

Inactive Publication Date: 2018-12-18
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0023] In order to solve the technical defects of the prior art in the process of determining the positioning parameters of the microseismic source, such as the location of the source and the time of the earthquake, the positioning parameters are interrelated, the positioning accuracy is low, the positioning time is long, and the positioning results are not unique. The present invention provides a method based on Optimization method of microseismic source location parameters based on particle swarm

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  • An optimization method for locating parameters of micro-earthquake source
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[0070] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0071] In an embodiment, a mine has frequent ground pressure bursts, and a multi-channel 24-bit microseismic monitoring system has been installed for this purpose. The mine has installed 18 shock pickers in different positions, and 9 of them are respectively installed at the -520 level and -840 level. To verify the effectiveness of the present invention, the blasting operation of known position is selected as the research object, and 10 shock pickers have detected effective microseismic signals in the operation process. figure 1 , carry out preprocessing such as denoising and filtering on the signal detected in the field to obtain a signal with a high signal-to-noise ratio, and then select two blasting points with obvious waveform take-off and easy to capture the first arrival for analysis, and their spatial position c...

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Abstract

The invention discloses an optimization solution method for locating parameters of a micro-earthquake source, which takes the minimum residual square sum of the difference between the arrival time picked up by two vibration pickups and the calculated arrival time as an objective, calculates the source position and the equivalent wave velocity by using particle swarm algorithm, and directly calculates the starting time according to the source position and the equivalent wave velocity. The invention provides constraint rules of parameters such as inertia weight, acceleration constant, maximum flying velocity of particles and the like in the PSO solution algorithm in combination with engineering practice, avoids algorithm failure due to improper selection of these parameters, improves the robustness of the solution algorithm, achieves the purpose of reducing iteration times, improving positioning accuracy and algorithm speed.

Description

technical field [0001] The present invention belongs to the microseismic source positioning technology in the field of information processing technology, especially the optimization method of microseismic source positioning parameters. Specifically, when solving the microseismic source positioning parameters, multiple parameters are likely to be interrelated, the convergence speed is slow, and the solution cannot be solved. For the unique problem, a particle swarm optimization (PSO, particle swarm optimization) algorithm is proposed to locate the seismic source, which belongs to the field of information processing technology. Background technique [0002] Effectively monitoring the location of rock micro-fractures can improve the accuracy of monitoring and early warning of coal mine disasters such as rock bursts and coal and gas outbursts. For a long time, the research on the accuracy and precision of seismic source positioning has been a research topic of microseismic monito...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01V1/28G01S5/22
CPCG01S5/22G01V1/288G06F30/20
Inventor 孙红梅贾瑞生彭延军樊建聪崔焕庆孟祥文陈卓艳
Owner SHANDONG UNIV OF SCI & TECH
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