Proceedings of the Rocscience International Conference (RIC 2023)

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Landslide Disaster Risk Reduction Through Slope Stabilization: A Case Study of eThekwini, KwaZulu Natal, South Africa

Authors
S. T. Mudenge1, *, G. Fourie1, L. Sobhee-Beetul2, D. Kalumba1
1University of Cape Town, Cape Town, South Africa
2Cape Peninsula University of Technology, Cape Town, South Africa
*Corresponding author. Email: shiellajc@gmail.com
Corresponding Author
S. T. Mudenge
Available Online 8 November 2023.
DOI
10.2991/978-94-6463-258-3_13How to use a DOI?
Keywords
landslide; slope stability analysis; disaster risk reduction; safety factor; ground anchors
Abstract

Landslides are a severe geological hazard which mainly occur when the forces which cause downward earth movement of a slope exceed the strength of the constituent materials. The main causes of landslides can be broadly categorized as hydrogeological, morphological and physical. The triggering mechanisms include human activities and natural causes such as excessive rainfall or snowfall, volcanic activity and seismic actions. In April 2022, a subtropical depression along the coastal region of eThekwini, KwaZulu Natal, South Africa caused intense precipitation averaging 200–450 mm over a five-day period. The cyclone impact resulted in the deadliest and most catastrophic landslides in recent times and unprecedented infrastructural damage.

The mass earth movements and associated deposits caused significant geomorphic alterations. In the aftermath of landslides, disaster risk reduction approaches are vital in minimizing the impact and for preventing further mass movements. In order to rehabilitate the failed slopes, this study investigated the geometries, geotechnical and morphological characteristics of the residual slopes. A susceptibility model of the zone was developed to classify the risk of sliding and an earth support system was designed to stabilize the slope. The computations demonstrated that landslide disaster risk reduction can be achieved through measures which predict and mitigate the likelihood of slope failure in geohazard areas.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Rocscience International Conference (RIC 2023)
Series
Atlantis Highlights in Engineering
Publication Date
8 November 2023
ISBN
978-94-6463-258-3
ISSN
2589-4943
DOI
10.2991/978-94-6463-258-3_13How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - S. T. Mudenge
AU  - G. Fourie
AU  - L. Sobhee-Beetul
AU  - D. Kalumba
PY  - 2023
DA  - 2023/11/08
TI  - Landslide Disaster Risk Reduction Through Slope Stabilization: A Case Study of eThekwini, KwaZulu Natal, South Africa
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 127
EP  - 133
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_13
DO  - 10.2991/978-94-6463-258-3_13
ID  - Mudenge2023
ER  -