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A method for judging the similarity of trace diagrams for rock mass joint and fissure model testing

A joint fissure and model inspection technology, applied in character and pattern recognition, image analysis, image enhancement, etc., can solve the problems of strong subjectivity and difficulty in reaching a unified standard, and achieve the effect of overcoming the too strong subjectivity of graphic inspection

Active Publication Date: 2020-08-11
TIANJIN UNIV
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Problems solved by technology

This method is too subjective, the results obtained vary from person to person, and it is difficult to reach a unified standard; on the other hand, graphic inspection has characteristics that cannot be replaced by numerical inspection. Comprehensively reflect the density, length, spacing and even relative position of joints and fissures from macro to micro

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  • A method for judging the similarity of trace diagrams for rock mass joint and fissure model testing
  • A method for judging the similarity of trace diagrams for rock mass joint and fissure model testing
  • A method for judging the similarity of trace diagrams for rock mass joint and fissure model testing

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific formulas.

[0047] as attached figure 1 As shown, a method for discriminating similarity of trace graphs for rock mass joint fissure model inspection includes the following steps:

[0048] Step A: List the original actual trace diagram and simulated trace diagram;

[0049] Step B: Determine the similarity threshold r as the basic standard for judging the similarity in the following steps. The similarity threshold r is set in the range of [0.7,0.9] according to the actual engineering precision requirements. If r=0.85 is set, it represents the following Only when the relevant indicators generated in the above steps all reach 0.85 can the two trace diagrams be judged as similar.

[0050] Step C: Preprocessing of the original actual trace graph and the simulated trace graph. Specifically include:

[0051] Step C1: If the actual or simulated trace is a color i...

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Abstract

The invention discloses a trace map similarity judging method for rock joint fissure model test, which belongs to the fields of geotechnical engineering and computer graphics. The method includes the following steps: S1, listing an original actual trace map and a simulated trace map; S2, determining similarity thresholds as the basic standard of similarity judging in subsequent steps; S3, preprocessing the original actual trace map and the simulated trace map; S4, making a similarity analysis of the overall gray values; S5, making a similarity analysis of the gray gradation curves; S6, carrying out characteristic direction similarity matching; and S7, making a similarity analysis of the gray density distribution curves. By combining computer image processing and the professional features of geotechnical engineering, the defect that graphics test is too subjective in the previous process of 3D terrain modeling validity test is overcome. The visual analysis of a trace image is converted into a strict algorithm, and thus, a quantitative standard is provided for the validity test of a model.

Description

technical field [0001] The invention relates to the fields of geotechnical engineering, geological three-dimensional modeling analysis and computer graphics, in particular to a method for discriminating the similarity of trace diagrams used for rock mass joint fissure model inspection. Background technique [0002] The structural plane of rock mass reflects the nature of discontinuity, inhomogeneity and anisotropy of rock mass, and plays a key role in controlling the mechanical properties, hydraulic properties and engineering stability of rock mass. However, the joints and fissures inside the rock mass are difficult to be directly observed, and there are a large number of them, which brings great challenges to the analysis of rock mass stability. At the same time, with the development of computer technology, geological three-dimensional modeling technology is becoming more and more mature, and the fine modeling of rock mass with discrete fracture network in the formation has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06T7/00G06T7/136
CPCG06T7/0002G06T7/136G06T2207/10004G06T2207/30184
Inventor 李明超韩帅
Owner TIANJIN UNIV
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