Chemically induced compaction bands: Triggering conditions and band thickness
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چکیده
منابع مشابه
Chemically induced compaction bands : 1 Triggering conditions and band thickness
7 8 Key points 9-Compaction band instabilities due to cataclasis and dissolution in rocks 10-Strong chemo-poro-mechanical coupling, grain breakage and chemical softening 11-Regions of instability, compaction band thickness and periodicity 12 13 Abstract 14 During compaction band formation various mechanisms can be involved at different scales. 15 Mechanical and chemical degradation of the solid...
متن کاملChemically induced compaction bands: Triggering conditions and band thickness
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Compaction bands are localized, planar zones of compressed material that form perpendicular to the maximum compressive stress. Compaction bands have been observed in porous sandstone formations in the field and in laboratory compression tests on porous sandstone, plaster, glass beads, polycarbonate honeycombs and metal foams. Because the permeability of the compacted material is much reduced, c...
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This paper derives conditions for localized deformation for a transversely isotropic constitutive relation intended to model the response of geological materials in the axisymmetric compression test. The analysis considers the possibility of shear bands, with dilation or compaction, and pure compaction bands. The latter are planar zones of localized pure compressive deformation (without shear) ...
متن کاملTheory of Compaction Bands in Porous Rock
Compaction bands are narrow planar zones of localized purely compressive (without shear) deformation that form perpendicular to the most compressive principal stress. Such bands have been observed in high porosity rocks in the laboratory and in the field. Because compaction presumably decreases permeability, these bands can act as barriers to flow within reservoirs. Reexamination of the results...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2014
ISSN: 2169-9313
DOI: 10.1002/2013jb010342