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Risk assessment and prediction of safety factor for circular failure slope using rock engineering systems

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Abstract

Circular failure is generally observed in the slope of soil, highly jointed rock mass, mine dump and weak rock. Accurate estimation of the safety factor (SF) of slopes and their performance is not an easy task. In this research, based on rock engineering systems (RES), a new approach for the estimation of the SF is presented. The introduced model involves six effective parameters on SF [unit weight (γ), pore pressure ratio (r u), height (H), angle of internal friction (φ), cohesion (C) and slope angle (\(\beta\))], while retaining simplicity as well. In the case of SF prediction, all the datasets were divided randomly to training and testing datasets for proposing the RES model. For comparison purposes, nonlinear multiple regression models were also employed for estimating SF. The performances of the proposed predictive models were examined according to two performance indices, i.e., coefficient of determination (R 2) and mean square error. The obtained results of this study indicated that the RES is a reliable method to predict SF with a higher degree of accuracy in comparison with nonlinear multiple regression models.

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  1. Department of Mining Engineering, Arak University of Technology, Arak, Iran

    Hadi Fattahi

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  1. Hadi Fattahi
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Correspondence to Hadi Fattahi.

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Fattahi, H. Risk assessment and prediction of safety factor for circular failure slope using rock engineering systems. Environ Earth Sci 76, 224 (2017). https://doi.org/10.1007/s12665-017-6549-1

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