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Study of Loading Orientation Effect on Shear Strength of Rock Mass Discontinuities with Infilling Based on Laboratory Methods
, M.Sc. Thesis Sharif University of Technology ; Sadaghiani, Mohammad Hosein (Supervisor)
Abstract
Recently, Needs for construction of rock structures and underground ones such as tunnels, dam foundations, power plants and caverns built to keep oil, gas and nuclear waste has increased dramatically. In order to design, construct and excavate these underground structures safely and economically, full understanding of rock mass properties, suitable tools and practical techniques of drilling are necessary. Because of existing this discontinuities, including joints and layered rock masses and their effects on mechanical behavior of rock mass, it is necessary for the geomechanical profile, shear strength and failure mechanism of rock mass to be accurately indentified. Shear strength criterions...
Study on Effect of Regular Roughness and Filling of Discontinuity in Shear Strength of Rock Mass with Laboratory Tests
, Ph.D. Dissertation Sharif University of Technology ; Sedghiani, Mohammad Hossein (Supervisor)
Abstract
Effect of discontinuities on shear behavior and shear strength of rock masses are very important. Infill materials found in natural rock discontinuities may cause a reduction in joint shear strength, influencing rock mass stability. Many researches have been done in the field of behavior of infilled and unfilled discontinuities. The models and relationships developed through such studies will be of immense help to mining and civil engineering projects in rock masses. Rough surfaces in rock masses are found in rock joints. In general this research includes studies on the effect of joint surface mechanical and geometrical characteristics, asperity orientation and infill materials mechanical...