A Practical Classification to Sustainable Road Slope Stability Assessment, Alanya-Konya Roadway, Turkey: Case Study

Authors

  • Ahmed Ibraheem Mohamed
  • Ali Ferhat Bayram

Keywords:

Slope Stability analysis, Rock mass classification, SMR, field observations, Alanya-Konya roadway

Abstract

Today, a vast range of slope stability analysis tools exist for both rock and mixed rocksoil slopes. As is well known, Rock mass classification systems (RMR, SMR,GSI, Q, CSMR..etc), can be used to assess rock slope stability, hence, this paper intended to employing SMR classification, to prove that a rigorous rock mass classification will give more reliable if uncertain parameters are dropped and considered indirectly. The present study was carried out of 14 rock cuts in which 3 different causes of instability (Planer, Wedge, Toppling) along Hadim – Gevne dam segment of the Konya –Alanya roadway,this road distingueshed with existence of different lithological units. However, the cut slopes are located within recrystallized limestone, hard to extremely hard and highly jointed. In order to determine engineering geological properties of the rocks exposed along the roadway, then assess stability of the cut slopes, fourteen cut slopes were detailed identified. During field investigation all field observations/measurements parameters were recorded, which involved a detailed discontinuity surveys discontinuity conditions, geometrical relationship between slope and rock discontinuities (dips angles and slope), slope excavation methods; and underground water condition. Based on the field observations, stability analyses of the cut slopes and SMR values concluded that the slopes can be categorized into partially stable (50%), unstable (30%) and completely unstable (20%) with probable planar failure mode (20%), toppling failure mode (27%) and wedge failure mode (53%) . To ensure slope stability of road cuts against failure, flattening with different angles, sometimes constructing rock block walls may also be adopted beneficially.

References

Eberhardt, E.,2003, Rock slope stability analysis-Utilization of advanced numerical techniques. Earth and Ocean sciences at UBC. Vancouver, Canada. 42p.

Aksoy, C. ,2008, Review of rock mass rating classification: historical developments, applications, and restrictions. Journal of mining science, 44(1), 51-63.

Basahel, H.and Mitri, H.,2017, Application of rock mass classification systems to rock slope stability assessment: A case study. Journal of rock mechanics and geotechnical engineering, 9(6), 993-1009.

Morales, M., Panthi, K.and Botsialas, K.,2019, Slope stability assessment of an open pit mine using three-dimensional rock mass modeling. Bulletin of Engineering Geology and the Environment, 1-16.

Pastor, J. L., Riquelme, A. J., Tomás, R.,2019, Clarification of the slope mass rating parameters assisted by SMRTool, an open-source software. Bulletin of Engineering Geology and the Environment, 1-12.

Tomas, R., Cuenca, A., Cano, M.,2012, A graphical approach for slope mass rating (SMR). Engineering Geology journal, 124, 67-76.

Turan,A.,1990, Geology, stratigraphy and tectonic development of Hadim (Konya) and southwest of Taurus, PhD. thesis published, Selcuk University, documentation center. YÖK database.

Romana, M. (1985). New adjustment ratings for application of Bieniawski classification to slopes. In the Proceedings of the international symposium on role of rock mechanics, Zacatecas, Mexico.

Pantelidis, L. (2009). Rock slope stability assessment through rock mass classification systems. International Journal of Rock Mechanics and Mining Sciences, 46(2), 315-325.

Bieniawski, Z. (1979). The geomechanics classification in rock engineering applications. In the 4th ISRM Congress.

Bieniawski, Z. (1989). Engineering rock mass classifications: a complete manual for engineers and geologists in mining, civil, and petroleum engineering: Wiley- interscience Publication,,NEW YORK.

Trenouth, W. R., & Gharabaghi, B. (2016). Highway runoff quality models for the protection of environmentally sensitive areas. Journal of Hydrology, 542, 143–155.

Published

2019-07-03

How to Cite

Ahmed Ibraheem Mohamed, & Ali Ferhat Bayram. (2019). A Practical Classification to Sustainable Road Slope Stability Assessment, Alanya-Konya Roadway, Turkey: Case Study . International Journal of Environmental Pollution and Environmental Modelling, 3(1), 22-26. Retrieved from https://ijepem.com/article/view/volume-3-issue-1-article-3

Issue

Section

Articles