Engineering three-dimensional dual-source surface wave exploration method and system

Abstract

The invention discloses an engineering three-dimensional dual-source surface wave exploration method and system. A seismic source excitation point and a detector are arranged in an exploration area, aseismic surface wave is excited and generated at the seismic source excitation point, and the seismic surface wave is collected by the detector to obtain seismic surface wave data. The coordinates ofthe seismic source excitation point and the detector are established according to the positions of the seismic source excitation point and the detector, and the seismic source excitation point coordinates and the detector coordinates are obtained. A three-dimensional dual-source surface wave data set is obtained according to the seismic source excitation point coordinates, the detector coordinates and the seismic surface wave data. The planar distribution ranges and the three-dimensional shapes of underground detection targets at different positions of the exploration area are obtained according to the three-dimensional dual-source surface wave data set. According to the method and the system, the three-dimensional dual-source surface wave data set is obtained by establishing the seismicsource excitation point coordinates, the detector coordinates and the seismic surface wave data, and then the planar distribution ranges and the three-dimensional shapes of the underground detection targets at different positions of the exploration area are obtained according to the three-dimensional dual-source surface wave data set.

Description

technical field [0001] The invention relates to the field of surface wave exploration, in particular to an engineering three-dimensional dual-source surface wave exploration method and system. Background technique [0002] Surface wave exploration, also known as elastic wave frequency sounding, is a shallow seismic exploration method. The so-called surface wave is a special seismic wave, which belongs to a kind of ground roll wave, which can be divided into Rayleigh wave (R wave) and Love wave (L wave). Surface wave energy accounts for 2 / 3 of the total energy excited by the seismic source. Among them, the R wave has the strongest energy, the largest amplitude, and the lowest frequency in the vibration wave group, which is easy to identify and measure. At present, Rayleigh surface waves have been widely used in the fields of non-destructive testing and site evaluation. [0003] Due to the limitations of the observation system and data acquisition technology, the seismic dat...

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Problems solved by technology

[0003] Due to the limitations of the observation system and data acquisition technology, the seismic data collected by the two-dimensional surface wave exploration method cannot intuitively understand the plane distribution characteristics and three-dimensional spatial shape of the exploration target.

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