EXPERIMENTAL INVESTIGATION OF POROPERM PROPERTIES OF GEOMATERIALS IN NONUNIFORM STRESS FIELD

The research methodology for anisotropic permeability of geomaterials due to nonuniform stress state is theoretically justified and tested on a laboratory scale. The poroperm properties of fine grain sand and cryogel are investigated in diametral compression tests of cylindrical specimens with a cen...

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Veröffentlicht in:	Journal of mining science 2020-09, Vol.56 (5), p.706-712
Hauptverfasser:	Nazarova, L. A., Golikov, N. A., Skulkin, A. A., Nazarov, L. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Compression Compression tests Earth and Environmental Science Earth Sciences Flow rates Flow velocity Geomaterials Geomechanics Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Mineral Resources Natural gas Permeability Properties Stress Stress distribution
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Beschreibung
Zusammenfassung:	The research methodology for anisotropic permeability of geomaterials due to nonuniform stress state is theoretically justified and tested on a laboratory scale. The poroperm properties of fine grain sand and cryogel are investigated in diametral compression tests of cylindrical specimens with a center hole. The time-independent flow rate is measured in various areas of side surfaces of the specimens. The inverse coefficient problem on empirical permeability–effective stress relationship is formulated, and its solvability is demonstrated.
ISSN:	1062-7391 1573-8736
DOI:	10.1134/S1062739120057020