Experimental Study in Self-Burial Submerged Pipelines at Erodible Bed Under Steady Flow

Document Type : Research Paper


1 PhD Candidate of Hydraulic Structure, International Campus of Ferdowsi University of Mashhad, Iran

2 Professor, Department of Water Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran

3 Associate Professor, Department of Water Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran.


Providing safe conditions for water pipelines or other fluids on erodible beds is an important issue in the field of hydraulic engineering. Studies show that the installation of a plate called Spoiler on top of the pipeline increases  the amount of the erosion around the pipe and its self burial stimulation. Most studies about spoiler have been done on a fixed pipe, but in reality, when the scouring hole underneath the pipe is deep enough, the pipe begins to lower as a result of the weight, at when the pipe reaches the bottom of the scour hole, the erosion process stops and then the pipe is covered with sand and buried. The self burial phenomenon has not been studied with the use of a spoiler in the case of actual displacement of the pipe, and due to the fact that the studied pipes have been fixed, the transitional and sedimentary phases have not been observed. Considering the role of pipe displacement in changing the scouring profile, the study of the spatial phenomenon of the pipe  during displacement and observing the actual effect of the spoiler on the self burial performance and its effective parameters are necessary. In this study, this phenomenon has been studied experimentally.


Main Subjects

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Volume 40, Issue 4
February 2018
Pages 47-60
  • Receive Date: 17 March 2016
  • Revise Date: 16 May 2016
  • Accept Date: 28 May 2016
  • Publish Date: 21 January 2018