Method for obtaining microearthquake wave velocity based on space geometry relationship

A geometric relationship and microseismic wave technology, applied in the field of obtaining microseismic wave velocity based on spatial geometric relationship, can solve the problems of affecting the stability and positioning accuracy of the positioning algorithm, increase the workload, and inaccurate velocity models, and achieve high practical engineering application value. , the effect of improving the solution efficiency and improving the convergence speed
CN104502964AActive Publication Date: 2015-04-08LIUZHOU YUANCHUANG EFI TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
LIUZHOU YUANCHUANG EFI TECH
Publication Date
2015-04-08

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Abstract

The invention relates to a method for obtaining a microearthquake wave velocity based on a space geometry relationship. The method comprises the following steps: constructing an inequation of microearthquake equivalent wave velocity V according to the space geometry relationship of an earthquake focus point and a base station, constructing a regularly changing time difference fitness function shaped like a quadratic function with an upward opening, proposing a monotonous unidirectional searching algorithm, and resolving an optimum wave velocity. The method perfectly solves the problem that a velocity model in microearthquake positioning is inaccurate or non-unique, and does not need any prior engineering experience; the microearthquake wave velocity can be quickly and precisely solved according to the observation data of sensors for microearthquake arrival time, so that the positional accuracy of a microearthquake positioning algorithm in a later period is guaranteed, the rate of convergence and the stability of the algorithm are improved, and the method has an extremely high practical engineering application value.
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Description

technical field

[0001] The invention relates to microseismic monitoring, in particular to a method for obtaining microseismic wave velocity based on spatial geometric relationship. Background technique

[0002] Microseismic monitoring is one of the main monitoring technologies for mine dynamic disasters. A microseismic event is determined through the location of the source and its occurrence time, and the energy released is calculated, and then the strength and frequency of the microseismic activity are counted, and the potential distribution of the microseismic event is judged based on the location of the microseismic event. The law of mine disaster activities. In recent years, this technology has been widely used in the monitoring, monitoring and evaluation of rock mass structure stability in underground projects such as mines, coal mines, tunnels, geothermal projects, and nuclear projects, and open-pit projects such as slopes, roadbeds, and dams.

[0003] It is one of th...

Claims

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