Effects of Discontinuities Dip-Direction on Anisotropy Strength
Discontinuities are responsible for mechanical anisotropy causing directional variation of rock strength. Therefore the effect of discontinuity dip and dip direction on anisotropic response of rocks has been the focus of researches. Although numerous studies have been concentrated on the effect of dip variation, but no attention has been paid to the dip-direction variation on the strength response of the rocks. Hence, the effects of dip-direction on the rock mass strength were studied through testing of artificial material. Specimens were fabricated using plaster. A specific mold was used for this purpose. The samples were tested under triaxial tests subjected to different confining pressures. A parameter was defined known as .Anisotropy Effect. in order to highlight the changes in strength of rocks due to the discontinuities dip-direction variation. The details of the investigations, tables of the evaluated test results and the empirical equation deduced are presented in the paper. Discontinuities are responsible for mechanical anisotropy causing directional variation of rock strength. Therefore the effect of discontinuity dip and dip direction on anisotropic response of rocks has been the focus of researches. Although numerous studies have been concentrated on the effect of dip variation, but no attention has been paid to the dip-direction variation on the strength response of the rocks. Hence, the effects of dip-direction on the rock mass strength were studied through testing of artificial material. Specimens were fabricated using plaster. A specific mold was used for this purpose. The samples were tested under triaxial tests subjected to different confining pressures. A parameter was defined known as .Anisotropy Effect. in order to highlight the changes in strength of rocks due to the discontinuities dip-direction variation. The details of the investigations, tables of the evaluated test results and the empirical equation deduced are presented in the paper.
anisotropy confining pressure discontinuity angle anisotropy effect
A.Ghazvinian M.R.Hadei
Tarbiat Modares University, Tehran, Iran
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）