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

Active Publication Date: 2021-10-08
CENT SOUTH UNIV
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Problems solved by technology

However, in the actual application environment, there are many factors that affect the positioning results and accuracy of passive seismic sources. If only a single seismic source is used for positioning, there may be large errors in the positioning results, especially when applied to the stability of dams with high slopes. In the safety detection of micro-cracks inside the large-volume dam body, inaccurate positioning results will lead to untimely maintenance of the dam body and cause accidents. Instructive location monitoring method

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

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Embodiment Construction

[0039]The positioning method provided by the present invention is to use active source information to correct the accuracy of passive source positioning, which triggers the active source in the target area sequentially and records relevant data; Carry out preliminary positioning; then find the active source that is the closest to the time difference of the passive source as the target active source, that is, the distance between the target active source and the passive source is close; finally use the accurate wave velocity of the target active source to carry out the preliminary positioning results of the passive source correction. The following embodiments will be described by taking the method applied to a dam body as an example, but in other feasible embodiments, the method can also be applied in other fields.

[0040] The present invention will be further described below in conjunction with examples. In this example, if figure 1 As shown, the positioning method includes...

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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.

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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/307G01V1/36G01V2210/129
Inventor 董陇军邓思佳
Owner CENT SOUTH UNIV
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