Une adaptation du traitement d'images numériques de lames minces a l'analyse de la structure d'un gres a divers stades de la compression

• Autorzy: Gamond J. F. , Młynarczuk M. , Obara B.
• Konferencja: Proceedings of the 14th French-Polish Colloguium "Soli and Rock Mechanics. soil Mechanics - Geomaterials" Grenoble, August 29-31, 2007
• Języki publikacji: FR

Abstrakty

EN

Experimentally deformed sandstone specimens are used to study the onset, localization and mature stages of faults and fractures. These rupture mechanisms are studied through image processing of thin sections. Poorly defined grain boundaries, often observed in our sandstones, necessitate to create a specific processing algorithm. It allows us to quantify the changes of the grain size on each thin section, aspect ratio and preferred orientation generated by the progressive localization of the shear band.

Słowa kluczowe

EN

localization and mature stages of faults and fractures; progressive localization

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2008
• Tom: Vol. 30, nr 1-2
• Strony: 287--294
• Opis fizyczny: bibliogr, 10 poz.,

Twórcy

autor

Gamond J. F.

autor

Młynarczuk M.

autor

Obara B.

• LGIT, Observatoire de Grenoble, BP 53, 38041 Grenoble cedex, France,

Bibliografia

• [1] BIED A.E., SULEM J., MARTINEAU F., Microstructure of shear zones in Fontainebleau sandstone, International Journal of Rock Mechanics & Mining Sciences, 2002, 39, 917–932.
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• [3] CEREPI A., DURAND C., BROSSE E., Pore microgeometry analysis in low-resistivity sandstone reservoirs, Journal of Petroleum Science and Engineering, 2002, 35, 205–232.
• [4] HEILBRONNER R., KEULEN N., Grain size and grain shape analysis of fault rocks, Tectonophysics, 2006, 427, 199–216.
• [5] MŁYNARCZUK M., Description of sandstones structures by automated image analysis procedures, Proc. 9th European Congress on Stereology and Image Analysis, Zakopane, 2005, 100–109.
• [6] OBARA B., Identification of transcrystalline microcracks observed in microscope images of a dolomite structure using image analysis methods based on linear structuring element processing, Computers & Geosciences, 2007, 33, 151–158.
• [7] RAWLING G.C., GOODWIN L.B., Structural record of the mechanical evolution of mixed zones in faulted poorly lithified sediments, Rio Grande rift, New Mexico, USA, Journal of Structural Geology, 2006, 28, 1623–1639.
• [8] SERRA J., Image Analysis and Mathematical Morphology, London, 1981, Academic Press.
• [9] SERRA J., MŁYNARCZUK M., Morphological Merging of Multidimensional Data, Proceedings of STERMAT Conference, Kraków, 2000.
• [10] SULEM J., OUFFROUKH H., Shear banding in drained and undrained triaxial tests on a saturated sandstone: Porosity and permeability evolution, International Journal of Rock Mechanics & Mining Sciences, 2006, 43, 292–310.