NDLI: Determination method for shear strength parameters of rock-soil mixtures using close-range photogrammetry and 3-D limit equilibrium theory

Content Provider	Springer Nature Link
Author	Zhou, Jia wen Yang, Xing guo Yang, Zhao hui
Copyright Year	2015
Abstract	Using a combination of close-range photogrammetry and three-dimensional (3-D) limit equilibrium theory, a determination method for the shear strength parameters of rock-soil mixture is presented. A close-range photogrammetry method is used for measurement of the 3-D terrain of the experimental target. AutoCAD Lisp and EXCEL VBA are used to perform 3-D limit equilibrium analysis of the stability of sliding mass and perform backanalysis of shear strength parameters. The presented method was used to determine the shear strength parameters of rock-soil mixtures at the Liyuan Hydropower Station. The 3-D terrain of sliding surface could be measured notably well using of closerange photogrammetry. The computed results reveal that the cohesion and friction angle of rock-soil mixtures were 3.15 kPa and 29.88° for test A, respectively, and 4.43 kPa and 28.30° for test B, respectively, within the range of shear strength parameters, as determined by field and laboratory tests. The computation of shear strength parameters is influenced by the mesh grid number, especially the cohesion of the rock-soil mixture. The application of close-range photogrammetry can reduce the site works and improve the computational efficiency and accuracy.
Starting Page	1068
Ending Page	1083
Page Count	16
File Format	PDF
ISSN	16726316
Journal	Journal of Mountain Science
Volume Number	12
Issue Number	5
e-ISSN	19930321
Language	English
Publisher	Science Press
Publisher Date	2015-09-29
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rock-soil mixtures In-situ horizontal push-shear test Photogrammetry Limit equilibrium Shear strength parameters Earth Sciences Geography (general) Environment Ecology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Geography, Planning and Development Geology Global and Planetary Change Nature and Landscape Conservation

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