Journal
ADVANCES IN CIVIL AND INDUSTRIAL ENGINEERING, PTS 1-4
Volume 353-356, Issue -, Pages 562-570Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMM.353-356.562
Keywords
fine sandstone; confining pressure; hydraulic pressure; strength; deformation
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In order to study sandstone rock strength and deformation parameters under pore water pressure conditions, triaxial compression tests of different hydraulic pressure were executed. Fitting equations of fine sandstone confining pressure and hydraulic pressure coupling effects were established. This research show that fine sandstone rock strength increases with confining pressure increases. Rock mass strength and cohesion have negative exponential relationship with hydraulic pressure. When the hydraulic pressure is 3MPa, elasticity and confining pressure fit to logarithmic relationship. Fine sandstone Elasticity modulus decreases with hydraulic pressure increases. Poisson's ration and hydraulic pressure fit to linear relationship.
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