AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION

CUI Min; CAI Jia

2014 Vol. 20, No. 2

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CUI Min, CAI Jia. AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION[J]. Journal of Geomechanics, 2014, 20(2): 159-164.

Citation:

CUI Min, CAI Jia. AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION[J]. Journal of Geomechanics, 2014, 20(2): 159-164.

AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION

CUI Min,
CAI Jia

CNOOC Research Institute, Beijing 100027, China

Received Date: 21 February 2014

Publish Date: 25 June 2014

Abstract

Abstract

Finite strain determination is an important research for deformation characteristics of rocks. In order to improve the precision and the velocity, and ameliorate the status which is laborious and time consuming methods availability for manual finite strain determination, we take automatic method of finite strain determination by MICASRG algorithm, which is short for Multiply Images Constrained Automated Seeded Region Growing, and set the quartz sandstone of Daqing Mountain as an example. Based on multiply images and information of color, the MICASRG can recognize the grain without the necessity for the special equipment. In addition, this method enhances the contrast gradient between the inner and the boundary of the grain by the Canny operator. The results of automatic identified and handcrafted have the great comparability on centroid, area, major axis, minor axis and finite strain determination, and reflect the feasibility of this method. We also give a satisfied explanation about the poor correlation on orientation of the major axis between auto-identified and handcrafted.
- structural deformation /
- finite strain determination /
- multiply images /
- quartz sandstone /
- auto-method

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References

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