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VRUBEL, J. ŘÍHA, J.
Originální název
Discussion on the Safety Factors of Slopes Recommended for Small Dams
Typ
článek v časopise ve Scopus, Jsc
Jazyk
angličtina
Originální abstrakt
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.
Klíčová slova
small water reservoirs, slope stability, factor of safety
Autoři
VRUBEL, J.; ŘÍHA, J.
Vydáno
6. 3. 2017
Nakladatel
Mendel University Press
Místo
Brno
ISSN
1211-8516
Periodikum
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
Ročník
Volume 65
Číslo
2/2017
Stát
Česká republika
Strany od
569
Strany do
576
Strany počet
8
URL
https://acta.mendelu.cz/65/2/0569/
Plný text v Digitální knihovně
http://hdl.handle.net/11012/68383
BibTex
@article{BUT136665, author="Jan {Vrubel} and Jaromír {Říha}", title="Discussion on the Safety Factors of Slopes Recommended for Small Dams", journal="Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis", year="2017", volume="Volume 65", number="2/2017", pages="569--576", doi="10.11118/actaun201765020569", issn="1211-8516", url="https://acta.mendelu.cz/65/2/0569/" }