A passive seismic source location method, system, terminal and readable storage medium

A seismic source positioning and active seismic source technology, applied in seismology, seismic signal processing, instruments, etc., can solve problems such as accidents, untimely dam maintenance, positioning result errors, etc., to improve positioning accuracy, reduce the number, and prevent expansion penetrating effect
CN111781641BActive Publication Date: 2021-10-08CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2021-10-08

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Abstract

The invention discloses a passive seismic source positioning method, system, terminal and readable storage medium. The method includes: acquiring active seismic source signals and passive seismic source signals based on arranged microseismic sensors; performing preliminary positioning of the passive seismic source based on the passive seismic source signals, And use the active source signal to correct the preliminary positioning of each passive source; wherein, the correction process is: based on the actual arrival time difference of the passive source signal received by the two microseismic sensors, and the actual arrival of each active source signal received by the two microseismic sensors The time difference determines an active source as the target active source, and then uses the wave velocity when the microseismic sensor receives the target active source signal as the velocity constraint when the microseismic sensor receives the passive source signal, and then uses the velocity constraint to correct the preliminary positioning of the passive source. The invention uses the information of the active seismic source to correct the positioning result of the passive seismic source, thereby improving the positioning accuracy of the passive seismic source.
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Description

technical field

[0001] The invention belongs to the technical field of seismic source positioning, and in particular relates to a passive seismic source positioning method, system, terminal and readable storage medium based on active seismic source correction. Background technique

[0002] With the improvement of national strategic needs and the level of production technology, the types and quantities of dams (dams, tailings dams, etc.) are increasing year by year. In the natural environment, due to complex hydrogeology and engineering geology, the dam is not only affected by water pressure and other static loads during operation, but also impacted by dynamic loads; over time, the dam will be affected by different Degree of aging, disease, cracks and other factors produce defects and potential safety hazards. Therefore, these dams with high potential energy and important strategic tasks are very likely to experience instability and collapse accidents, causing huge losses to...

Claims

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