Determination of Shear Strength Parameters of Rock Mass using Back Analysis Methods and Comparison of Results with Empirical Methods

Ehsan Bakhtiyari, Ali Almasi, Akbar Cheshomi and Jafar Hassanpour
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Ehsan Bakhtiyari: School of Geology, College of Sciences, University of Tehran
Ali Almasi: School of Geology, College of Sciences, University of Tehran
Akbar Cheshomi: School of Geology, College of Sciences, University of Tehran
Jafar Hassanpour: School of Geology, College of Sciences, University of Tehran

European Journal of Engineering and Technology Research, 2017, vol. 2, issue 11, 35-42

Abstract: In this study, using the collected data from 4 slope failures in one of the central mines of Iran, the shear strength parameters of jointed and crushed rock masses using back analysis method are calculated and its results are compared with the values obtained from the empirical methods. In this regard, firstly, the identification of failures is investigated and then geometrical and geological engineering parameters of slopes are collected and recorded by field survey. At this stage, using the Hoek-Brown criterion, shear strength parameters of the rock mass are estimated. Then, using appropriate software for slope stability analysis (limit equilibrium method software: SLIDE and numerical method software: FLAC), and assuming that safety factor is one, the shear strength parameters for sliding surfaces are determined. Finally, the results obtained from this analysis are compared with the results of the empirical methods and then suggestions are made to modify the input data of empirical method

Keywords: Back Analysis; Limit Equilibrium; Numerical Analysis; Hoek-Brown Criterion. (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:epw:ejeng0:v:2:y:2017:i:11:id:60518

DOI: 10.24018/ejeng.2017.2.11.518

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