Eighth International Conference on Case Histories in Geotechnical Engineering
Slope Stability Monitoring and Early-Warning System for Kariba Dam South Bank Slope
Publication: Geo-Congress 2019: Embankments, Dams, and Slopes (GSP 305)
ABSTRACT
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.
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Information & Authors
Information
Published In
Geo-Congress 2019: Embankments, Dams, and Slopes (GSP 305)
Pages: 86 - 95
Editors: Christopher L. Meehan, Ph.D., University of Delaware, Sanjeev Kumar, Ph.D., Southern Illinois University Carbondale, Miguel A. Pando, Ph.D., University of North Carolina Charlotte, and Joseph T. Coe, Ph.D., Temple University
ISBN (Online): 978-0-7844-8207-0
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
Published in print: Mar 21, 2019
ASCE Technical Topics:
- Continuum mechanics
- Dam failures
- Dams
- Deformation (mechanics)
- Disaster risk management
- Disasters and hazards
- Embankment dams
- Engineering mechanics
- Failures (by type)
- Geohazards
- Geomechanics
- Geotechnical engineering
- Landslides
- Man-made disasters
- River bank stabilization
- River engineering
- Rivers and streams
- Rock masses
- Rock mechanics
- Rockfill dams
- Slope stability
- Slopes
- Solid mechanics
- Structural mechanics
- Water and water resources
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