Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran)
The stability and flow rate of earth dams are influenced by several factors, including geometric characteristics, material permeability, and the height of water upstream. To effectively understand the behavior of unsaturated soils in earth dams, it is essential to apply the principles of unsaturated...
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Shahid Chamran University of Ahvaz
2025-01-01
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| Series: | علوم و مهندسی آبیاری |
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| Online Access: | https://jise.scu.ac.ir/article_19627_a81a6f33ccde0caa2cd935aecd1ec606.pdf |
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| author | Seyed Ali Asghari Pari Seyed Amin Asghari Pari |
| author_facet | Seyed Ali Asghari Pari Seyed Amin Asghari Pari |
| author_sort | Seyed Ali Asghari Pari |
| collection | DOAJ |
| description | The stability and flow rate of earth dams are influenced by several factors, including geometric characteristics, material permeability, and the height of water upstream. To effectively understand the behavior of unsaturated soils in earth dams, it is essential to apply the principles of unsaturated soil mechanics, given the complexities involved. Neglecting uncertainties in geotechnical assessments can lead to incorrect estimates of safety factors for dam slope stability. This research investigates the impact of unsaturated soil conditions on seepage discharge and the safety factor for the downstream of the earth dam under varying scenarios, with a focus on the Seydon Dam in Khuzestan province, Iran. The findings indicate that modeling the dam's soil as a saturated-unsaturated system decreases the computed flow rate through the dam and enhances the downstream slope's safety factor in both probabilistic and deterministic analyses. Additionally, a sensitivity analysis reveals that the earth dam shell's parameters significantly influence downstream slope stability. Spatial variation analysis further indicates that accounting for spatial changes in soil parameters can decrease the safety factor of the downstream slope compared to a standard assessment. |
| format | Article |
| id | doaj-art-6afed8ca6fee445e989cb6290ef0e8e9 |
| institution | DOAJ |
| issn | 2588-5952 2588-5960 |
| language | fas |
| publishDate | 2025-01-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | علوم و مهندسی آبیاری |
| spelling | doaj-art-6afed8ca6fee445e989cb6290ef0e8e92025-08-20T03:09:33ZfasShahid Chamran University of Ahvazعلوم و مهندسی آبیاری2588-59522588-59602025-01-01474516710.22055/jise.2024.47355.212719627Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran)Seyed Ali Asghari Pari0Seyed Amin Asghari Pari1Assistant Professor, Department of Civil Engineering, Technical Faculty, Behbahan Khatam Al Anbia University of Technology,Associate Professor, Department of Civil Engineering, Technical Faculty, Behbahan Khatam Al Anbia University of Technology.The stability and flow rate of earth dams are influenced by several factors, including geometric characteristics, material permeability, and the height of water upstream. To effectively understand the behavior of unsaturated soils in earth dams, it is essential to apply the principles of unsaturated soil mechanics, given the complexities involved. Neglecting uncertainties in geotechnical assessments can lead to incorrect estimates of safety factors for dam slope stability. This research investigates the impact of unsaturated soil conditions on seepage discharge and the safety factor for the downstream of the earth dam under varying scenarios, with a focus on the Seydon Dam in Khuzestan province, Iran. The findings indicate that modeling the dam's soil as a saturated-unsaturated system decreases the computed flow rate through the dam and enhances the downstream slope's safety factor in both probabilistic and deterministic analyses. Additionally, a sensitivity analysis reveals that the earth dam shell's parameters significantly influence downstream slope stability. Spatial variation analysis further indicates that accounting for spatial changes in soil parameters can decrease the safety factor of the downstream slope compared to a standard assessment.https://jise.scu.ac.ir/article_19627_a81a6f33ccde0caa2cd935aecd1ec606.pdfearth damunsaturated soilstability analysisseepage analysis |
| spellingShingle | Seyed Ali Asghari Pari Seyed Amin Asghari Pari Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) علوم و مهندسی آبیاری earth dam unsaturated soil stability analysis seepage analysis |
| title | Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) |
| title_full | Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) |
| title_fullStr | Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) |
| title_full_unstemmed | Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) |
| title_short | Effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state (case study: Seydon dam – Iran) |
| title_sort | effect of unsaturated soil on deterministic and probabilistic analysis of the stability of an earth dam in steady state case study seydon dam iran |
| topic | earth dam unsaturated soil stability analysis seepage analysis |
| url | https://jise.scu.ac.ir/article_19627_a81a6f33ccde0caa2cd935aecd1ec606.pdf |
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