Seismic noise imaging exploration method and apparatus, and storage medium

Abstract

The embodiment of the invention discloses a seismic noise imaging exploration method and apparatus, and a storage medium. The method is applied to an exploration system including a three-component detector and a plurality of single-component detectors; and the plurality of single-component detectors are arranged on the circumference using the location of the three-component detector as the center.The method comprises: acquiring first data, including two horizontal component data and one vertical component data, of by the three-component detector; acquiring a plurality of second data characterizing a vertical direction by the plurality of single-component detectors; determining the velocity of a surface layer based on the plurality of second data and the vertical component data; and determining a velocity model that characterizes a correspondence relationship between the depth and velocity of the stratum according to the surface layer velocity and the first data; and determining a velocity profile of the testing area based on the velocity model.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a seismic noise imaging exploration method, device and storage medium. Background technique [0002] At present, the inversion method of seismology using actual observation record data is still mostly used in the study of deep structures, such as the single-point seismic noise imaging method, which usually uses three-component low-frequency geophones to collect data, and then uses the collected data to obtain the measured level The vertical spectral ratio curve (Horizontal-to-Vertical Spectral Ratio, HVSR), and then calculate the formation velocity, but in the calculation process, it relies heavily on the shear wave velocity of the underground surface. However, when using the HVSR single-point noise imaging method, it is difficult to determine the accurate surface shear wave velocity, which is usually a given empirical value, which will lead to relatively large calcul...

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Problems solved by technology

[0002] At present, the inversion method of seismology using actual observation record data is still mostly used in the study of deep structures, such as the single-point seismic noise imaging method, which usually uses three-component low-frequency geophones to collect data, and then uses the collected data to obtain the measured level and the vertical spectral ratio curve (Horizontal-to-Vertical Spectral Ratio, HVSR), and then calculate the formation velocity, but in the calculation process, it relies heavily on the shear wave velocity of the underground surface

When using the HVSR single-point noise imaging method, it is difficult to determine the accurate surface shear wave velocity, which is usually a given empirical value, which will lead to relatively large calculation deviations and unstable calculation results

However, there is currently no effective solution to this problem

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