Abstract
ABSTRACT Estimation of critical tractive stress in an open channel is important for finding bank stability and for the design of stable channels. It is also vitally needed for finding bed load transport. Shields' study is applicable for non-cohesive soil on flat surface. Lane made exhaustive study on critical tractive stress for both flat and inclined surfaces and contributed immensely for the design of stable channels. All these studies are, however, applicable for straight channels only. Starting from fundamentals, author has derived equations for critical tractive stresses both for straight and curved channels. It has been shown that the shear stress induced by secondary current in a typical curved channel e.g. in a meandering bend, reduces significantly the critical tractive stress on the outer side of bend. If the stress due to secondary current is very high due to strong flow curvature, critical tractive stress may vanish and the outer bed and bank may cave in even with insignificant forward drag.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
