Paper Information

Journal:   PLANT PROTECTION (SCIENTIFIC JOURNAL OF AGRICULTURE)   FALL 2016 , Volume 39 , Number 3 #M0079; Page(s) 13 To 24.
 
Paper: 

CONTROL OF EROSION AT RIVERS CONFLUENCE

 
 
Author(s):  SHAFAI BEJESTAN M., GHANBARI ADIVI E.*
 
* FACULTY OF WATER SCIENCES ENGINEERING, SHAHID CHAMRAN UNIVERSITY OF AHVAZ, IRAN
 
Abstract: 

Using riprap is one of the common and economical methods for rivers bed protection against scouring. In this study, some stone sizes, under different hydraulic conditions have been tested to determine the criteria that affecting the stable size, of riprap at the threshold and failure conditions. In this investigation, it was found that in a constant flow ratio (Qr), with decreasing tail water depth and with increasing tail water velocity, the stability size of riprap was increased. Also it revealed that a constant size of riprap, with increasing flow ratio (Qr) in the threshold situation, tail water depth was increased and tail water velocity was decreased. At the constant size of riprap, with increasing total flow (Qt), in the threshold situation, tail water depth was increased and the stone with larger size will begin the incipient motion.

 
Keyword(s): THRESHOLD MOTION, RIVER CONFLUENCE, RIPRAP, FLOW RATE
 
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