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Publication detail
ŘÍHA, J. VRUBEL, J.
Original Title
Evaluation of the stability of slopes of dams of small water reservoirs in relation to the requirements of CSN 75 2410
Type
conference paper
Language
English
Original Abstract
Small reservoirs are defined by the Czech national standard ČSN 75 2410 as a schemes with dam height smaller than 9 m and with reservoir capacity less than 2 million m3. In some cases designing and assessing a slope stability of small embankment dams is not carried out using slope stability calculations. For these dams standard ČSN 75 2410 recommends the maximal upstream and downstream slopes based on embankment material classification. Even so the margin of safety of these recommended slopes is not assigned. Aim of this paper is to evaluate safety reserve included in recommended slopes for the most frequent homogenous embankment dams. The safety factors for individual variants were evaluated using the PLAXIS 2D and the GeoStudio Slope/W software. The results indicated reasonable safety reserve in case of embankments provided with toe drain, much less safety was achieved in cases with small dams with phreatic surface reaching the downstream slope. Rather small safety factors for upstream slopes are related to the rapid drop of water level in the reservoir at undrained conditions. Logically the safety factor is strongly influenced by shear strength parameters of the soils.
Keywords
small embankment dam, reservoir, stability, Czech national standard
Authors
ŘÍHA, J.; VRUBEL, J.
RIV year
2015
Released
29. 9. 2015
Publisher
Instytut Meteorologii i Gospodarki Wodnej, Panstwowy Instytut Badawczy, Waszawa
Location
Waszawa, PL
ISBN
978-83-64979-09-5
Book
Eksploatacja budowli pietrzacych - diagnostyka i zapobieganie zagroženiom
Pages from
213
Pages to
225
Pages count
13
BibTex
@inproceedings{BUT117336, author="Jaromír {Říha} and Jan {Vrubel}", title="Evaluation of the stability of slopes of dams of small water reservoirs in relation to the requirements of CSN 75 2410", booktitle="Eksploatacja budowli pietrzacych - diagnostyka i zapobieganie zagroženiom", year="2015", pages="213--225", publisher="Instytut Meteorologii i Gospodarki Wodnej, Panstwowy Instytut Badawczy, Waszawa", address="Waszawa, PL", isbn="978-83-64979-09-5" }