![]() ![]() Kahraman S, Alber M (2006) Estimating unconfined compressive strength and elastic modulus of a fault breccia mixture of weak blocks and strong matrix. Kalender A, Sonmez H, Medley E, Tunusluoglu C, Kasapoglu KE (2014) An approach to predicting the overall strengths of unwelded bimrocks and bimsoils. Jiang JW, Wei X, Joachim J, Markus S, Pan JJ, Zhang W (2016) Research on mechanical parameters of coarse-grained sliding soil based on CT scanning and numerical tests. Int J Rock Mech Min Sci 48:95–102ĭing XL, Zhang HM, Huang SL, Lu B, Zhang Q (2012) Research on mechanical characteristics of unsaturated soil-rock mixture based on numerical experiments of Mesostructure. Eng Geol 137–138:53–63Ĭoli N, Berry P, Boldini D (2011) In situ non-conventional shear tests for the mechanical characterisation of a bimrock. IEEE Transactions on Pattern Analysis and Machine Intelligence - Special issue on interpretation of 3-D scenes-part II archive 14(2):239–256Ĭoli N, Berry P, Boldini D, Bruno R (2012) The contribution of geostatistics to the characterisation of some bimrock properties. The above movement characteristics of gravels proved that the proposed method is valid for the quantitative description of changes in spatial position and spatial attitude.īesl PJ, McKay ND (1992) A method for registration of 3-D shapes. The movement of the gravels was consistent with the testing method, in which the load was applied on the top of the specimen, and the movement also agreed with the macro-deformation of the triaxial specimen. Rotation of the gravels was found during the triaxial test, which indicates that changes in the spatial attitude of the gravels occurred. Generally, the lateral displacement of gravels near the outside of the specimen was greater than that of the gravels close to the axis. The axial displacement of gravels was largest in the upper part of the specimen, and decreased from the top to the bottom of the specimen. The deformation of the surrounding soil played a controlling role in the movement of the gravel. There were no obvious contacts between the gravels because the gravel content was low. The point set data was used to calculate the spatial movement of the gravels, including the changes in spatial position and spatial attitude, by using the iterative closest point (ICP) algorithm. Point set data of each gravel was generated according to surface nodes of the gravel. CT scanning and numerical modeling methods were applied to establish a true three-dimensional numerical model based on triaxial testing of mixed soil. A quantitative analysis method for reconstructing the spatial movement of gravels in a triaxial mixed soil specimen is proposed. ![]()
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