Analysis of Gidabo Earth Fill Dam by Introducing Geotextile Reinforcement
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Date
2015-11
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Addis Ababa University
Abstract
Soil reinforcement is now well established technique for geotechnical applications in most parts of the world. This thesis includes the application of soil reinforcement technique for slope stability of earth fill dams. The dam section designed by WWDSE has been considered for the case study. The slopes of dam are then considered to be reinforced with horizontal layers of geotextile and the percent improvement of factor of safety under static loading has been studied. The statically optimized section has been checked for stability against dynamic loading. The analysis is carried out by state of the art software package, Geo-Slope software. It is found that much steeper slopes may be provided to the earth dams by providing geotextile reinforcing layers. The suitable length of reinforcing layers, spacing between them and offset from the face needs to be determined for the required slopes of dam. The statically optimized section is found to be stable against the earthquake loading. This technique may be particularly useful for high earth dams and may result in lesser construction cost as well as construction time.
KEYWORDS : geotextile reinforcement,earth fill dam, reinforced slopes,dynamic analysis, earthquake, Geo-Slope software
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Keywords
geotextile reinforcement;earth fill dam; reinforced slopes;dynamic analysis; earthquake;Geo-Slope software