Version 1
: Received: 19 June 2022 / Approved: 21 June 2022 / Online: 21 June 2022 (04:33:51 CEST)
How to cite:
Mkilima, T. The Impact of Soil Cohesiveness on Earth-fill Dam Stability under Rapid Drawdown. Preprints2022, 2022060282. https://doi.org/10.20944/preprints202206.0282.v1
Mkilima, T. The Impact of Soil Cohesiveness on Earth-fill Dam Stability under Rapid Drawdown. Preprints 2022, 2022060282. https://doi.org/10.20944/preprints202206.0282.v1
Mkilima, T. The Impact of Soil Cohesiveness on Earth-fill Dam Stability under Rapid Drawdown. Preprints2022, 2022060282. https://doi.org/10.20944/preprints202206.0282.v1
APA Style
Mkilima, T. (2022). The Impact of Soil Cohesiveness on Earth-fill Dam Stability under Rapid Drawdown. Preprints. https://doi.org/10.20944/preprints202206.0282.v1
Chicago/Turabian Style
Mkilima, T. 2022 "The Impact of Soil Cohesiveness on Earth-fill Dam Stability under Rapid Drawdown" Preprints. https://doi.org/10.20944/preprints202206.0282.v1
Abstract
For embankment slope stability, soil cohesivity is one of the most important shear strength parameters. The effect of cohesiveness on the slope stability of a homogeneous embankment dam under rapid drawdown loading conditions was examined in this study. With the use of numerical modeling in GeoStudio, different situations were explored based on cohesiveness (0 kN/m2, 5 kN/m2, 10 kN/m2, and 15 kN/m2) under a 1 m per day drawdown rate. The factor of safety value obtained from the long-term steady-state condition under 15 kN/m2 cohesion was equivalent to a 116.8% increase from the one obtained under 0 kN/m2 cohesion. The factor of safety values obtained after subjecting the embankment to different soil cohesion levels yielded a p-value of 1.91 x 10-41, according to the Analysis of Variance. The calculated p-value (alpha value) is less than 0.05, suggesting that the differences between the examined cohesiveness values based on the list of the factor of safety values are statistically significant. The findings derived in this study show that it is significant to capture the effect of material characteristics during the design phase of an embankment dam.
Keywords
embankment; numerical modeling; factor of safety; soil cohesiveness; slope stability
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
