Results 231 to 240 of about 74,649 (269)

Scour around impermeable spur dikes: a review

ISH Journal of Hydraulic Engineering, 2017
AbstractScour is a natural process in rivers initiated by the erosive action of the activated water. Spur dikes are built across the flow to defend the stream erosion and facilitate the shifting of the river away from the bank. The spur dike weakens due to stream bed scouring and erosion, which is usually documented as the key reason of spur dike ...
Manish Pandey, Z. Ahmad, P. K. Sharma
openaire   +1 more source

Local scour around spur-dikes

Journal of Hydrology, 1983
Abstract Experimental investigations were conducted to study the effects of upstream flow conditions, sediment characteristics, and spur-dike's geometry on the maximum scour depth and scour pattern around a spur-dike. Dimensional analyses to find different non-dimensional terms affecting the phenomenon were obtained and verified with the help of the ...
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Local Scour Associated with Angled Spur Dikes

Journal of Hydraulic Engineering, 2002
A series of experiments were conducted in which the volume of the scour hole associated with model spur dikes was measured in a laboratory flume under clear-water overtopping flows. Spur dike models were angled at 45, 90, and 135° to the downstream channel sidewall with contraction ratios of 0.125 and 0.250.
Roger A. Kuhnle, Carlos V. Alonso, F. Douglas Shields   +2 more
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Scour around spur dikes and bridge abutments

Journal of Hydraulic Research, 2001
Realistic estimation of scour depth around spur dikes and bridge abutments in alluvial rivers is important for safe and economic design of their foundations. Procedures have been developed by previous investigators for determination of design scour depth in steady flows at abutments and spur dikes by making use of the design discharge.
U. C. Kothyari, K. G. Ranga Raju
openaire   +1 more source

Geometry of Scour Holes Associated with 90° Spur Dikes

Journal of Hydraulic Engineering, 1999
The stable pools formed by spur dikes can be a significant factor for improving aquatic habitat in unstable degraded streams. Prediction of the volume and geometry of the scour hole associated with a spur dike yields information that is valuable for assessing the potential benefit to the aquatic habitat.
Roger A. Kuhnle, Carlos V. Alonso, F. Douglas Shields   +2 more
openaire   +1 more source

Erosion of Sand Beds around Spur Dikes

Journal of the Hydraulics Division, 1972
The present status of research on erosion of sand beds around spur dikes is briefly reviewed. The experimental results of erosion of two different sizes of nearly uniform sand are presented. It is shown that a rather simple kinematic model for erosion of sand beds in a long contraction, first proposed by Straub, can be modified for application to ...
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Application of Permeable Spur Dike in Mountain River Training

Applied Mechanics and Materials, 2014
Based on the investigation and indoor experiment, the flow structure and properties of erosion or deposition associated with permeable spur dike were researched. According to the new demands about engineering structure in mountain rivers regulation, the potential action of permeable spur dike in mountain river training was analyzed.
Yin Jun Zhou, Sheng Qian, Ning Ning Sun
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Bank Protection Techniques Using Spur Dikes

2023
A Hydraulic Model Investigation was conducted to evaluate and demonstrate the effects of impermeable spur dikes as a bank protection technique in a concave bend. The tests were conducted to observe channel bed and bank response in a stream with noncohesive banks where suspended load is insignificant. Several parameters relative to spur dike design that
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Effect of Spur Dikes on Flow Through ContractionS

Journal of the Hydraulics Division, 1965
THE GEOLOGICAL SURVEY HAS CONDUCTED TESTS IN THE HYDRAULICS LABORATORY AT THE GEORGIA INSTITUTE OF TECHNOLOGY TO DETERMINE THE DISCHARGE CHARACTERISTICS OF HIGHWAY BRIDGES WITH SPUR DIKES. THE ADDITION OF SPUR DIKES TO A CONTRACTION REDUCES THE RESISTANCE TO FLOW AND INCREASES THE DISCHARGE COEFFICIENT 33 PER CENT FOR ELLIPTICAL DIKES, 23 PER CENT FOR ...
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Discussion of “Study of Scour Around Spur-Dikes”

Journal of the Hydraulics Division, 1962
C. R. Neill, T. K. Chaplin
  +4 more sources