Physical Simulation and Theoretical Estimate of Gravity-Induced Lateral Stress in Rocks
I. L. PAN’KOV1,2
1Mining Institute, Ural Branch, Russian Academy of Sciences, ul. Sibirskaya 78a, Perm, 614007 Russia
2Perm National Research Polytechnic University, pr. Komsomol’skii 29, Perm, 614990 Russia
Keywords: напряжение бокового распора, сила тяжести, уплотняющиеся горные породы, пористость, модуль деформации, коэффициент Пуассона, lateral stress, gravity, consolidating rocks, porosity, deformation modulus, Poisson’s ratio
Abstract
Gravity-induced lateral stress in rocks is assessed in the framework of physical simulation using a flexible thin-walled cylinder. Compression of loose geo-materials changes diameter of the cylinder, which allows estimating lateral stress. The observed dependences with various compacted geo-materials are then theoretically approximated based on characteristics of porosity, rock deformation modulus and Poisson’s ratio. The obtained relations are applicable to estimation of gravity-induced lateral stress in an intact rock mass.
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