Journal
JOURNAL OF HYDRAULIC ENGINEERING
Volume 131, Issue 2, Pages 85-96Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)0733-9429(2005)131:2(85)
Keywords
channel stabilization; channel improvements; bank stabilization; geometry; fluvial hydraulics; China
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More than 50 years river training practices in the Lower Yellow River provide valuable experience in river management for flood control in rivers having rapid flow changes. silting beds, and active channel migrations and are of importance in understanding the fluvial processes in regulated rivers with high sediment loads. Planned channel alignments for river training in the Lower Yellow River usually consist of a series of consecutive moderate bends representing the natural tendency of flows. Flow guide works. namely spur dikes, were constructed on the concave banks of the planned bends to protect the channel against scouring and migration by deflecting the current away from bends and further guiding the main flow from one bend to the next one. As a result, well-planned flow guide works can play a crucial role in limiting channel shifting and migration and in establishing a relatively stable channel. Enough flow guide works, on both sides together reaching about 80% of the channel length, may change the transitional and braided channel patterns to a confined meandering pattern.
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