%0 Journal Article %1 amrg2014geotechnical %A AMRG, Athapaththu %D 2014 %J Natural hazards %K cohesion coneresistance geostatitics landslide shear slope %N 2 %P 1327-1348 %T A New Geotechnical Method for natural slope exploration and Analysis %U https://www.academia.edu/9805623/A_new_geotechnical_method_for_natural_slope_exploration. %V 75 %X Geotechnical investigation of natural slopes is challengeable especially whennatural slopes having higher gradients and access is difficult. Also, it is even more prob-lematic to find the shear strength parameters spatially to evaluate the stability of slopes asmost of the methods available to find the shear strength parameters in the literature areuneconomical or such methods cannot be applied in vegetated slopes. Recently, authorshave conducted a series of in situ investigations based on the newly developed lightweightdynamic cone penetrometer to examine its applicability in analyzing the slopes coveredwith weathering remnants of decomposed granite. Six patterns were identified based on thepenetration resistance varies with the depth. Spatial variability analysis conducted ondifferent grid spaces showed that the coefficient of variation of cone resistance varies from0 to 35 %. Semi-variogram analysis showed that the Spherical Models can be used toevaluate the spatial variability of weathering remnants of decomposed granite. A series of laboratory calibration tests based on the lightweight dynamic cone penetration tests anddirect shear tests with pore pressure measurements were conducted at different void ratiosand degrees of saturation. Based on the laboratory calibration test results, a method todetermine the void ratio, e , from the data of q d was presented. Based on this, two formulasto evaluate the shear strength parameters, apparent cohesion and friction angle, wereestablished with the cone resistance and degree of saturation. Slight modification wasproposed in evaluating the apparent cohesion with respect to the different fine content inthe soils. As a whole, the proposed method can be successfully applied to individual slopesto determine the profile thickness and to evaluate the shear strength parameters spatially.Based on this, hazard assessment of individual slopes can be mad

@article{amrg2014geotechnical, abstract = { Geotechnical investigation of natural slopes is challengeable especially whennatural slopes having higher gradients and access is difficult. Also, it is even more prob-lematic to find the shear strength parameters spatially to evaluate the stability of slopes asmost of the methods available to find the shear strength parameters in the literature areuneconomical or such methods cannot be applied in vegetated slopes. Recently, authorshave conducted a series of in situ investigations based on the newly developed lightweightdynamic cone penetrometer to examine its applicability in analyzing the slopes coveredwith weathering remnants of decomposed granite. Six patterns were identified based on thepenetration resistance varies with the depth. Spatial variability analysis conducted ondifferent grid spaces showed that the coefficient of variation of cone resistance varies from0 to 35 %. Semi-variogram analysis showed that the Spherical Models can be used toevaluate the spatial variability of weathering remnants of decomposed granite. A series of laboratory calibration tests based on the lightweight dynamic cone penetration tests anddirect shear tests with pore pressure measurements were conducted at different void ratiosand degrees of saturation. Based on the laboratory calibration test results, a method todetermine the void ratio, e , from the data of q d was presented. Based on this, two formulasto evaluate the shear strength parameters, apparent cohesion and friction angle, wereestablished with the cone resistance and degree of saturation. Slight modification wasproposed in evaluating the apparent cohesion with respect to the different fine content inthe soils. As a whole, the proposed method can be successfully applied to individual slopesto determine the profile thickness and to evaluate the shear strength parameters spatially.Based on this, hazard assessment of individual slopes can be mad}, added-at = {2015-02-09T09:35:58.000+0100}, author = {AMRG, Athapaththu}, biburl = {https://www.bibsonomy.org/bibtex/250a39e00e9fedbfa9bec3d64fb3301de/athapaththu}, interhash = {2ac41614f26fedbe63b843441c278ec8}, intrahash = {50a39e00e9fedbfa9bec3d64fb3301de}, journal = {Natural hazards}, keywords = {cohesion coneresistance geostatitics landslide shear slope}, month = {9}, number = 2, pages = {1327-1348}, timestamp = {2015-02-09T09:35:58.000+0100}, title = {A New Geotechnical Method for natural slope exploration and Analysis}, url = {https://www.academia.edu/9805623/A_new_geotechnical_method_for_natural_slope_exploration.}, volume = 75, year = 2014 }