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Geomechanics and Engineering Volume 13, Number 4, October 2017 , pages 571-584 DOI: https://doi.org/10.12989/gae.2017.13.4.571 |
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Assessment of rock slope stability by slope mass rating (SMR):A case study for the gas flare site in Assalouyeh, South of Iran |
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Mohammad Azarafza, Haluk Akgün and Ebrahim Asghari-Kaljahi
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| Abstract | ||
| Slope mass rating (SMR) is commonly used for the geomechanical classification of rock masses in an attempt to evaluate the stability of slopes. SMR is calculated from the RMR89-basic (basic rock mass rating) and from the characteristic features of discontinuities, and may be applied to slope stability analysis as well as to slope support recommendations. This study attempts to utilize the SMR classification system for slope stability analysis and to investigate the engineering geological conditions of the slopes and the slope stability analysis of the Gas Flare site in phases 6, 7 and 8 of the South Pars Gas Complex in Assalouyeh, south of Iran. After studying a total of twelve slopes, the results of the SMR classification system indicated that three slope failure modes, namely, wedge, plane and mass failure were possible along the slopes. In addition, the stability analyses conducted by a number of computer programs indicated that three of the slopes were stable, three of the slopes were unstable and the remaining six slopes were categorized as \'needs attention\' classes. | ||
| Key Words | ||
| geomechanics; slope mass rating (SMR); rock mass rating (RMR); Assalouyeh | ||
| Address | ||
| Mohammad Azarafza: Department of Geology, University of Isfahan, Isfahan, Iran Haluk Akgün: Department of Geological Engineering, Geotechnology Unit, Middle East Technical University, Ankara, Turkey Ebrahim Asghari-Kaljahi: Department of Earth Sciences, University of Tabriz, Tabriz, Iran | ||