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Urban two-dimensional seismic obstacle-crossing observation system optimized geometry-variable design method

A seismic observation system and design method technology, applied in the field of urban geophysical exploration, can solve problems such as the inability to efficiently determine the impact of obstacle segments, and achieve the effect of reducing complexity

Active Publication Date: 2017-10-24
GEOPHYSICAL EXPLORATION CENT CHINA EARTHQUAKE ADMINISTATION
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Problems solved by technology

[0006] The embodiment of the present invention provides a method for optimizing the variable view design of the urban two-dimensional seismic obstacle observation system, which is used to solve the problem in the prior art that the influence of the obstacle section on the normal observation system cannot be quickly and efficiently determined

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] figure 1 is the diagram of the conventional seismic observation system provided by the embodiment of the present invention, such as figure 1 As shown in the figure, the 12 coverage reference lines of the common central point and the actual statistical results of the coverage times of each common central point are shown in the figure.

[0029] figure 2 It is the diagram of the seismic observation system affected by the obstacle section provided by the...

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Abstract

The present invention discloses an urban two-dimensional seismic obstacle-crossing observation system optimized geometry-variable design method and belongs to the urban geophysical exploration technical field. The invention aims to solve the problem that the influence of an obstacle section on a normal observation system cannot be quickly and efficiently determined in the prior art can be solved. According to the method, received permutations in a single-shot conventional seismic observation system to be processed are divided into at least one effective permutation segment according to positional relationships between the position of each detection point and the range of each of all obstacle segments; and the comprehensive planar graph of the seismic observation system is drawn according to the positions of shot points and the effective permutation segments, and the number of times of coverage of a common midpoint is put into statistics according to the planar graph of the seismic observation system, wherein the number of times of coverage of the common midpoint is the number of times of repeated observation which is formed by identical reflection points on an underground interface which are located between the shot points and the detection points.

Description

technical field [0001] The present invention relates to the technical field of urban geophysical exploration, and more specifically relates to a method for optimizing and variable-observation design of an urban two-dimensional seismic obstacle observation system. Background technique [0002] When performing seismic exploration work, the relative positional relationship between the excitation point and the receiving array is called the seismic observation system. In the process of urban two-dimensional seismic exploration, when the seismic survey line must cross some obstacle survey sections such as rivers, highways, residential alleys, etc., it is necessary to adopt a reasonable change in the observation system design (abbreviated as variable view design) to ensure that the seismic data from the underground The reflected wave event of the interface is continuously tracked. [0003] At present, the variable appearance design usually relies on experienced field production ma...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/13G01V1/16G01V1/20
CPCG01V1/003G01V1/13G01V1/168G01V1/20
Inventor 姬计法何银娟李倩刘保金李稳邓小娟石金虎谭雅丽
Owner GEOPHYSICAL EXPLORATION CENT CHINA EARTHQUAKE ADMINISTATION
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