Discussion on the Safety Factors of Slopes Recommended for Small Dams
The design and assessment of the slope stability of small embankment dams is usually not carried out using slope stability calculations but rather by the comparison of proposed or existing dam slopes with those recommended by technical standards or guidelines. Practical experience shows that in many...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Mendel University Press
2017-01-01
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| Series: | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis |
| Subjects: | |
| Online Access: | https://acta.mendelu.cz/65/2/0569/ |
| _version_ | 1819151129764691968 |
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| author | Jan Vrubel Jaromír Říha |
| author_facet | Jan Vrubel Jaromír Říha |
| author_sort | Jan Vrubel |
| collection | DOAJ |
| description | The design and assessment of the slope stability of small embankment dams is usually not carried out using slope stability calculations but rather by the comparison of proposed or existing dam slopes with those recommended by technical standards or guidelines. Practical experience shows that in many cases the slopes of small dams are steeper than those recommended. However, most of such steeper slopes at existing dams do not exhibit any visible signs of instability, defects or sliding. For the dam owner and also for dam stability engineers, the safety of the slope, expressed e.g. via a factor of safety, is crucial. The aim of this study is to evaluate the safety margin provided by recommended slopes. The factor of safety was evaluated for several dam shape and layout variants via the shear strength reduction method using PLAXIS software. The study covers various dam geometries, dam core and shoulder positions and parameter values of utilised soils. Three load cases were considered: one with a steady state seepage condition and two with different reservoir water level drawdown velocities – standard and critical. As numerous older small dams lack a drainage system, variants with and without a toe drain were assessed. Calculated factors of safety were compared with required values specified by national standards and guidelines. |
| first_indexed | 2024-12-22T14:28:30Z |
| format | Article |
| id | doaj.art-23c6508a79124062a967c8426e9a0447 |
| institution | Directory Open Access Journal |
| issn | 1211-8516 2464-8310 |
| language | English |
| last_indexed | 2024-12-22T14:28:30Z |
| publishDate | 2017-01-01 |
| publisher | Mendel University Press |
| record_format | Article |
| series | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis |
| spelling | doaj.art-23c6508a79124062a967c8426e9a04472022-12-21T18:22:49ZengMendel University PressActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis1211-85162464-83102017-01-0165256957610.11118/actaun201765020569Discussion on the Safety Factors of Slopes Recommended for Small DamsJan Vrubel0Jaromír Říha1Brno University of Technology, Faculty of Civil Engineering, Institute of Water Structures, Veveří 95, 602 00 Brno, Czech RepublicBrno University of Technology, Faculty of Civil Engineering, Institute of Water Structures, Veveří 95, 602 00 Brno, Czech RepublicThe design and assessment of the slope stability of small embankment dams is usually not carried out using slope stability calculations but rather by the comparison of proposed or existing dam slopes with those recommended by technical standards or guidelines. Practical experience shows that in many cases the slopes of small dams are steeper than those recommended. However, most of such steeper slopes at existing dams do not exhibit any visible signs of instability, defects or sliding. For the dam owner and also for dam stability engineers, the safety of the slope, expressed e.g. via a factor of safety, is crucial. The aim of this study is to evaluate the safety margin provided by recommended slopes. The factor of safety was evaluated for several dam shape and layout variants via the shear strength reduction method using PLAXIS software. The study covers various dam geometries, dam core and shoulder positions and parameter values of utilised soils. Three load cases were considered: one with a steady state seepage condition and two with different reservoir water level drawdown velocities – standard and critical. As numerous older small dams lack a drainage system, variants with and without a toe drain were assessed. Calculated factors of safety were compared with required values specified by national standards and guidelines.https://acta.mendelu.cz/65/2/0569/small water reservoirsslope stabilityfactor of safety |
| spellingShingle | Jan Vrubel Jaromír Říha Discussion on the Safety Factors of Slopes Recommended for Small Dams Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis small water reservoirs slope stability factor of safety |
| title | Discussion on the Safety Factors of Slopes Recommended for Small Dams |
| title_full | Discussion on the Safety Factors of Slopes Recommended for Small Dams |
| title_fullStr | Discussion on the Safety Factors of Slopes Recommended for Small Dams |
| title_full_unstemmed | Discussion on the Safety Factors of Slopes Recommended for Small Dams |
| title_short | Discussion on the Safety Factors of Slopes Recommended for Small Dams |
| title_sort | discussion on the safety factors of slopes recommended for small dams |
| topic | small water reservoirs slope stability factor of safety |
| url | https://acta.mendelu.cz/65/2/0569/ |
| work_keys_str_mv | AT janvrubel discussiononthesafetyfactorsofslopesrecommendedforsmalldams AT jaromirriha discussiononthesafetyfactorsofslopesrecommendedforsmalldams |