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Saulius Vaikasas, Raimundas Baublys, Ramūnas Gegužis
Riverbed stability assessment under Lithuanian conditions
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
In many cases riverbed self-regulation processes are similar in natural and canalized channels, however dynamic equilibrium is steady in
natural rivers, while hydrodynamics processes are in progress in regulated ones. Prof. Grischanin’s criterion M was used as one of the
criteria to evaluate bed stability of natural and regulated rivers. This hydrodynamics criterion is widely known and used in large rivers of
the former USSR, but it has not been sufficiently studied under Lithuanian natural conditions. The following research showed that values
of this criterion are close to 1 (0.9 +/–0.12) in small natural rivers of Lithuania, and much lower or higher in regulated ones. This indicates
that the natural riverbeds are relatively stable, while recovery processes of riverbeds are still in progress in canalized streams. We consider
that Grischanin’s stability criterion M could assess recovery level of river beds.
Keywords:regulated streams; rivers bed stability; Grishanin’s criterion.
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