Method and device for analyzing time-lapse seismic observation data

Abstract

The embodiment of the invention provides a time-lapse seismic observation data analysis method and device, and the method comprises the steps: detecting the site conditions of an observation site, anddetermining the arrangement types of an excitation point and a receiving point according to the site conditions of the observation site; performing a site experiment to obtain basic parameters; whenthe arrangement type is a linear type, arranging the positions of the excitation point and the receiving point according to the basic parameters; when the arrangement type is a regular grid type, calculating observation parameters according to the basic parameters, and arranging the positions of the excitation point and the receiving point according to the observation parameters; selecting different time points to excite the excitation point, and obtaining seismic waves received by the receiving point; calculating seismic images of the observation site at different times according to the seismic waves received by the receiving point; and acquiring site data, establishing a corresponding relationship according to the site data and the seismic images, and performing data analysis through thecorresponding relationship. By the adoption of the method, the seismic data of an expansive soil bank slope and a dam landslide can be reflected in time and space, and then abnormity can be accurately recognized.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a method and device for analyzing time-lapse seismic observation data. Background technique [0002] Seismic data acquisition is the basis of seismic exploration. The quality of seismic data collected in the field directly affects the exploration results, especially for seismic data detection of expansive soil bank slopes and dam landslides. Due to the complexity and variability of the crustal structure, seismic data needs to be more accurate. precise. [0003] At present, for the detection of expansive soil bank slopes and embankment landslides, a single survey line is usually arranged, and then seismic data are detected by seismic imaging methods, seismic refraction methods, surface wave methods and other seismic detection methods. [0004] However, the processing of seismic data by the above method only analyzes the transient seismic data of a specific section at ...

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Problems solved by technology

[0004] However, the processing of seismic data by the above method only analyzes the transient seismic data of a specific section at a specific moment, and cannot reflect the time-lapse change image of the landslide process; limited by a single time and transient data, the ability to identify anomalies is poor. weak

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