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Year 2025
 
Vol 66, Issue 2, [04 - 2025] - Full papers

Assessment of a rock planar slide along an expressway in Vietnam

DOI:10.46326/JMES.2025.66(2).05

  • Affiliations:

    1 Thuyloi University, Hanoi, Vietnam
    2 University of Transport and Communications, Hanoi, Vietnam
    3 Phenikaa University, Hanoi, Vietnam

  • *Corresponding:
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  • Received: 24th-Nov-2024
  • Revised: 6th-Mar-2025
  • Accepted: 21st-Mar-2025
  • Online: 1st-Apr-2025
Pages: 39 - 49
Views: 59
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Abstract:

This paper presents an assessment of a rock planar slide, which took place at km 108 along the Tien Yen-Mong Cai expressway, an extension of the Halong-Vandon expressway in Vietnam. Half of the expressway has been covered by a large volume of rock deposit after its movement. The height of the slope in this study is 16 m and its width is 200 m. The main head scarp is about 11 m high. The sliding angle of the failure surface is from 12÷150. The stratigraphy mostly consists of weathered jointed siltstone, which is located in the upper part of the Ha Coi formation (J1-2hc2). The sedimentary rocks are thick bedded, fine-grained sandstones interbedded with medium-bedded chocolate pink siltstones or thin-bedded shales. In general, they are medium to thick bedded with the thickness of rock layer from 0.3÷0.8 m. The upper rock layer is the 9b-1 layer with RQD = 0÷36% whereas the lower one is the 9b-2 layer with RQD = 0÷92%. The topsoil layer is 0.5÷2.5 m thick. Rockplane and Plaxis computer softwares were adopted to perform stability analysis of the slope. Results showed that the overall factor of safety of the slope before treatment is lower than 1.0, which is in good agreement with the instability of the slope. In order to apply the countermeasures, part of the slope will be first excavated with an angle of 450. Then, the prestressed ground anchor system will be installed. After treatment, the overall factor of safety of the slope was increased to larger than 1.30, which meets the requirement by the Vietnam code.

How to Cite
Do, N.Tuan, Nguyen, L.Chau, Nguyen, T.Quang and Nguyen, D.Quoc 2025. Assessment of a rock planar slide along an expressway in Vietnam. Journal of Mining and Earth Sciences. 66, 2 (Apr, 2025), 39-49. DOI:https://doi.org/10.46326/JMES.2025.66(2).05.
References

Amarasinghe, M. P., Robert, D., Kulathilaka, S. A. S., Zhou, A., Jayathissa, H. A. G., (2024). Slope stability analysis of unsaturated colluvial slopes based on casestudies of rainfall‑induced landslides. Bulletin of Engineering Geology and the Environment, 83, 476.

Bayer, B., Simoni, A., Mulas, M., Corsini, A., and Schmidt, D. (2018). Deformation responses of slow-moving landslides to seasonal rainfall in the northern Apennines, measured by InSAR. Geomorphology, 308, 293-306.

Deng, D.P., Li, L., Zhao, L.H., (2017). Limit equilibrium method (LEM) of slope stability and calculation of comprehensive factor of safety with double strength-reduction technique. Journal of Mountain Science, 14, 2311-2324.

Dang, K., Sassa, K., Konagai, K., Karunawardena, A., Bandara, R. M. S., and Hirota, K. (2019). Recent rainfall-induced rapid and long-traveling landslide on 17 May 2016 in Aranayaka, Kagelle District, Sri Lanka. Landslides, 16(1), 155-164.

Do, T. N., Nguyen, L. C., Tuan, N. Q., and Vu, T. T. H. (2024). Rock planar slide - A case study at Tien Yen-Mong Cai expressway, Vietnam. Proceedings of the 5th International Conference on Geotechnics for Sustainable Infrastructure Development, 1637-1650.

Gong, S., Juang, C., and Wasowski, J. (2021). Geohazards and human settlements: Lessons learned from multiple relocation events in Badong, China - Engineering geologist's perspective. Engineering Geology, 285, 106051.

Hammah, R.E., Yacoub, T.E. and Corkum, B.C.Curran, J. H. (2005). The shear strength reduction method for thegeneralized Hoek-Brown criterion. Proceedings of the 40th U.S. Symposium on Rock Mechanics.

Hoek, E., Bray, J.W. (1981). Rock slope engineering. E and FN Spon and imprint of Chapman and Hall. London, UK, 357 pages.

Mokhtar, S., Rad, M.Y., (2020). Uncertainty Analysis of the Stability Parameters of Rock Walls. Archives of Civil Engineering, 16(4), 703-721.

Nguyen, L. C., Tien, P. V., and Do, T. N. (2020). Deep-seated rainfall-induced landslides on a new expressway: a case study in Vietnam. Landslides, 17, 395-407.

Oberhollenzer, S., Tschuchnigg, F., Schweiger, H.F., (2018). Finite element analyses of slope stability problems using non-associated plasticity. Journal of Rock Mechanics and Geotechnical Engineering., 10(6), 1091-1101.

River bureau (1997). Manual for river works in Japan. Ministry of construction.

TCVN 13346:2021. The landslide prevention engineering on road requirements for investigation and design.

Zheng, Y., Tang, X., Zhao, S., Deng, C., Lei, W., (2009). Strength reduction and step-loading finite element approaches in geotechnical engineering. Journal of Rock Mechanics and Geotechnical Engineering., 1(1), 21-30.

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