Publication detail

Evaluation of the stability of slopes of dams of small water reservoirs in relation to the requirements of CSN 75 2410

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"
}