Stability of Fractured Rock Massifs: Geotechnical Characterization: Case of the Excavation N°11 of the Taza‐Al Hoceima Expressway in Bouârma. (Al Hoceima, Northern Morocco)

International Journal of Civil Engineering
© 2025 by SSRG - IJCE Journal
Volume 12 Issue 3
Year of Publication : 2025
Authors : Youssef ElBalghiti, Mouna El Mkhalet, Nouzha Lamdouar
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Youssef ElBalghiti, Mouna El Mkhalet, Nouzha Lamdouar, "Stability of Fractured Rock Massifs: Geotechnical Characterization: Case of the Excavation N°11 of the Taza‐Al Hoceima Expressway in Bouârma. (Al Hoceima, Northern Morocco)," SSRG International Journal of Civil Engineering, vol. 12,  no. 3, pp. 56-66, 2025. Crossref, https://doi.org/10.14445/23488352/IJCE-V12I3P106

Abstract:

This article examines the geotechnical behavior of rock masses, emphasizing the role of discontinuities and the critical assessment of rock joints, which significantly influence the overall stability of the massif. The study focuses on several unstable sections of the Taza-Al Hoceima expressway in the Moroccan Rif mountains, an area notorious for landslide and rockfall risks. To quantitatively assess stability and better understand the rock massif's behavior, numerical modeling is conducted using the Joint Rock module specifically designed for discontinuous environments. This modeling simulates complex interactions between an intact rock and identified discontinuities, revealing potential weakness zones and sliding risks, particularly in unfavorable sections. In conclusion, this research highlights the necessity of a multidisciplinary approach that integrates geology, geotechnics, and numerical modeling for engineering projects in complex geological contexts characterized by high mechanical anisotropy. These findings contribute significantly to enhancing safety measures and informing design strategies in geotechnically challenging environments.

Keywords:

Stability, Geology, Risk, Rocky behavior, Numerical modeling.

References:

[1] H.H. Einstein et al., “The Effect of Discontinuity Persistence on Rock Slope Stability,” International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, vol. 20, no. 5, pp. 227-236, 1983.
[CrossRef] [Google Scholar] [Publisher Link]
[2] Ghader Saadati et al., “AI-Powered Geotechnics: Enhancing Rock Mass Classification for Safer Engineering Practices,” Rock Mechanics and Rock Engineering, pp. 1-31, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[3] Mohamed Master, “Susceptibility to Ground Movements in the Province of Chefchaouen (Central Rif, Morocco),” Thesis, Earth Sciences, University of Western Brittany - Brest, pp. 1-321, 2011.
[Google Scholar] [Publisher Link]
[4] H. Harmouzi et al., “Geomorphological and Geological Analysis of Akchour Landslide (Rif, Morocco),” Geo-Eco-Trop, vol. 42, no. 1, pp. 19-32, 2018.
[Google Scholar] [Publisher Link]
[5] R.E. Hammah, T. Yacoub, and J.H. Curran, “Variation of Failure Mechanisms of Slopes in Jointed Rock Masses with Changing Scale,” Third Canada-US Rock Mechanics Symposium, Toronto, Canada, vol. 3956, pp. 1-8, 2009.
[Google Scholar] [Publisher Link]
[6] J. Rousseau, “Numerical Modeling of the Dynamic Behavior of Structures under Impact with a Discrete Elements / Finite Elements Coupling,” Thesis, Joseph Fourier University, pp. 1-200, 2009.
[Google Scholar] [Publisher Link]
[7] ASTM-D6032/D6032M–17, Standard Test Method for Determining Rock Quality Designation (RQD) of Rock Core, ASTM International. [Online]. Available: https://webstore.ansi.org/standards/astm/astmd6032d6032m17#:~:text=1.1%20This%20test%20method%20covers,such%20as%20mining%20and%20civil
[8] Z.T. Bieniawski, Engineering Rock Mass Classifications: A Complete Manual for Engineers and Geologists in Mining, Civil, and Petroleum Engineering, John Wiley & Sons, pp. 1-272, 1989.
[Google Scholar] [Publisher Link]
[9] Evert Hoek, Practical Rock Engineering, RocScience, 2007. [Online]. Available:
https://www.rocscience.com/assets/resources/learning/hoek/Practical-Rock-Engineering-Full-Text.pdf
[10] E. Hoek, and E.T. Brown, “Practical Estimates of Rock Mass Strength,” International Journal of Rock Mechanics and Mining Sciences, vol. 34, no. 8, pp. 1165-I186, 1997.
[CrossRef] [Google Scholar] [Publisher Link]
[11] Noemie Lebret, “Structural and Metallogenic Context of the Magnetite Skarns of Beni Bou Ifrour (eastern Rif, Morocco) Contributions to the Geodynamic Evolution of the Western Mediterranean,” Thesis, University of Orléans, pp. 1-476, 2014.
[Google Scholar] [Publisher Link]
[12] G. Suter, “Geological Maps of the Rif at 1/500,000, Sheets 245a and 245b,” Notes and Memoirs of the Geological Service of Morocco, 1980.
[Google Scholar]
[13] Magdalena Stelzer, “Numerical Studies on the PLAXIS Jointed Rock Model,” Mather Thesis, Graz University of Technology, 2015.
[Google Scholar]
[14] Hatef Hashemi et al., “Evaluation of Rock Nail Wall Performance in Jointed Rock Using Numerical Method,” Geotechnical and Geological Engineering, vol. 33, pp. 593-607, 2015.
[CrossRef] [Google Scholar] [Publisher Link]
[15] Luis Gonzalez de Vallejo, and Mercedes Ferrer, Geological Engineering, CRC Press, pp. 1-700, 2011.
[Google Scholar] [Publisher Link]
[16] R.B.J. Brinkgreve, W. Broere, and D. Waterman, “Plaxis: 2D - Version 8,” Delft University of Tehnology & PLAXIS bv, pp. 1-18, 2004.
[Google Scholar] [Publisher Link]