Journal of Marine Science and Technology

Journal of Marine Science and Technology

Experimental investigation The effect of T-shape spur dike's angel on Rip Rap stability to bank protection of navigation river in 90 degree bend

Document Type : Original Manuscript

Authors
niam shehni karamzadeh
seied habib mosavi jahromi
mohammad mahmodian shoshtari
mahmod shafaie bajestan
10.22113/jmst.2015.15677
Abstract
One of the most important topics in river engineering is protection of banks. Because of change in flow characeristics the banks of rivers will be remove that it is very sever. Use of spur dikes is one of the common methods for protection of banks but there is a problem in this field that is protection of spur dikes which there isnt many reserch about its. Because the spur dikes are very useful in the bends therefore this research carried out in the 90 degree bends. In this resech the goal is investigation of the of spurdikes angel on stability if riprap. For achievement of this goal use three length of nose of spur dike ( 50%,75% and 100% of body length of spur dike) and three diameter of rip rap(1.51cm,1.12cm,0.72cm). the results showed that in all of the experiments increase in angel of nose cause decrese in froude number of flow, densimetric froud number of sediment in failure of riprap and then decrese of riprap stability.
Keywords
T shape spur dikes
riprap stability
90 degree bend
bank scour

  • Receive Date 16 November 2012
  • Revise Date 20 November 2012
  • Accept Date 20 November 2012
  • Publish Date 01 December 2015