Soil & Water Res., 2007, 2(3):104-111 | DOI: 10.17221/2104-SWR

On the determination of the stable bed slope of a channel using mathematical modelOriginal Paper

František Křovák
Department of Land Use and Improvement, Faculty of Forestry and Environment, Czech University of Life Sciences in Prague, Prague, Czech Republic

The paper deals with an analysis of selected equations used for the determination of a stable longwise slope calculation of torrential rivers. Irregularity of the gradient, accompanied by heavy bed-load experiencing abrupt changes of the flow as a result of heavy rainfalls of short duration and high intensity, these are typical features impacting the behaviour and characteristics of torrential rivers. The determination of the stable bottom slope, when the river bed is kept unpaved but still provides resistence against harmfull effects of rapids, becomes an essential objective of the study. Three methods are used to determine the stable slope: the first is based on tangent tension (shear stress theory), the second observes a (critical) non-scouring cross-sectional velocity (critical mean channel velocities), and the third applies the bottom layer velocity, (the critical bed velocities). The mathematical hydraulic model HEC-RAS v. 3.1.3 has been used for the verification of the methods in the Jindřichovický creek case study in the Krušné hory.

Keywords: stable bed slope; shear stress theory; critical mean channel velocities; critical bed velocities; HEC-RAS model

Published: September 30, 2007  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Křovák F. On the determination of the stable bed slope of a channel using mathematical model. Soil & Water Res. 2007;2(3):104-111. doi: 10.17221/2104-SWR.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. Dvořák J., Novák L. (1994): Soil Conservation and Silviculture. Development in Soil Science 23. Elsevier, Brázda, Prague
    2. Gordon N.D., McMahon T.A., Finlayson B.L. (1996): Stream Hydrology - An Introduction for Ecologist. J. Wiley, Sussex.
    3. HEC-RAS (Hydrologic Engineering Center's River Analysis System), Version 3.1.3, (May 2005): Computer Program. US Army Corps of Engineers, USA.
    4. HEC-RAS Version 4.0.0 Beta (Nov 2006): Computer Program. US Army Corps of Engineers, USA.
    5. Lopez L. (1993): Torrent control and streambed stabilization. FAO, Rome.
    6. Křovák F. (2002): Adaptation of Jindřichovický creek. Design, LČR OST, Plzeň. (in Czech)
    7. Křovák F., Kovář P. (2005): Discharge modelling on forest torrent sections. Zprávy lesnického výzkumu. Krajina, les a lesní hospodářství. Svazek 49, č. 1-4/2004. VÚLHM Jíloviště-Strnady, 51-54. (in Czech)
    8. Novák L. (1981): Protection and Creation of Landscape II. VŠZ, Praha. (in Czech)
    9. Novák L. (1988): Torrent Bed Stabilization. VŠZ, Praha. (in Czech) www.hec.usace.army.mil

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content