Passive seismic source positioning method and system based on active seismic source correction, terminal and readable storage medium

Abstract

The invention discloses a passive seismic source positioning method and system based on active seismic source correction, a terminal and a readable storage medium. The method comprises the following steps: acquiring an active seismic source signal and a passive seismic source signal based on an arranged micro-seismic sensor; carrying out the preliminary positioning of the passive seismic sources based on the passive seismic source signals, and correcting the preliminary positioning of each passive seismic source through employing the active seismic source signals; wherein the correction process comprises the following steps of: based on the actual arrival time difference of passive seismic source signals received by two micro-seismic sensors, and actual arrival time difference of each active seismic source signal received by the two micro-seismic sensors, determining one active seismic source as a target active seismic source; using the wave velocity when the microseismic sensor receives the target active seismic source signal as the velocity constraint when the microseismic sensor receives the passive seismic source signal, and using the velocity constraint to correct the initialpositioning of the passive seismic source. The positioning result of the passive seismic source is corrected by using the information of the active seismic source, and the positioning precision of thepassive seismic source is improved.

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...

AI Technical Summary

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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