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Slope Stability Monitoring and Early-Warning System for Kariba Dam South Bank Slope
Complex deformation processes observed on slow moving landslides are attributed to non-uniform shear surfaces, hydrogeology, rock mass heterogeneity, and uncertainties associated in the determination of the predominant slope failure mechanisms. Effective early warning systems must have a good monitoring system and be designed on sound scientific and mathematical principles. Social, environmental, and economic implications of impending disaster should motivate and determine the accuracy of these systems. Analysis was made of points to consider in designing a monitoring and early warning system for the active landslide on Kariba Dam south bank slope. These considerations included geological conditions, landslide kinematics, and risk scenarios. Displacement and deformation threshold definitions that allow enough time for evacuation of wild life and people that live downstream Kariba Dam are paramount. Potential landslide triggers, that are useful in threshold definition, were identified. The existing monitoring system was modified to take into account strain rates in critical sections of the slope. It will take both a well-designed system and easy to implement evacuation procedure to protect the populace that is susceptible to the imminent disaster.
Slope Stability Monitoring and Early-Warning System for Kariba Dam South Bank Slope
Complex deformation processes observed on slow moving landslides are attributed to non-uniform shear surfaces, hydrogeology, rock mass heterogeneity, and uncertainties associated in the determination of the predominant slope failure mechanisms. Effective early warning systems must have a good monitoring system and be designed on sound scientific and mathematical principles. Social, environmental, and economic implications of impending disaster should motivate and determine the accuracy of these systems. Analysis was made of points to consider in designing a monitoring and early warning system for the active landslide on Kariba Dam south bank slope. These considerations included geological conditions, landslide kinematics, and risk scenarios. Displacement and deformation threshold definitions that allow enough time for evacuation of wild life and people that live downstream Kariba Dam are paramount. Potential landslide triggers, that are useful in threshold definition, were identified. The existing monitoring system was modified to take into account strain rates in critical sections of the slope. It will take both a well-designed system and easy to implement evacuation procedure to protect the populace that is susceptible to the imminent disaster.
Slope Stability Monitoring and Early-Warning System for Kariba Dam South Bank Slope
Motsi, Prospect K. (author) / Mapekula, Lunga (author) / Kalumba, Denis (author) / Chibvura, Charles (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 86-95
2019-03-21
Conference paper
Electronic Resource
English
Slope Stability Monitoring and Early-Warning System for Kariba Dam South Bank Slope
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