Influence of Gravel Beds on Erosion of Sand by Submerged Jets
Journal Title: Saudi Journal of Civil Engineering - Year 2018, Vol 2, Issue 1
Abstract
Abstract: This paper shows experimentally effect of gravel beds to reduce erosion of soil downstream of submerged hydraulic jumps by using a physical model, gravel beds are employed downstream of radial gate to dissipate the energy and to control the erodibility of cohesionless soils. Two different types of gravel were considered, natural particle with graded grain sizes, and non-uniform big grain sizes, a state of smooth bed was included to estimate the influence of gravel beds on the scour hole dimensions. A preliminary comparison of the incipient motion values shows that granular soils downstream gravel bed have a smaller free surface flow erosion than the granular soils downstream smooth bed. Additional comparison of the experimental data incipient motion criteria also suggests that decrease void ratio for gravel bed leads to minimize erosion the soil. The gravel beds reduce the maximum scour hole by rate from 47% to 66% in comparing with the smooth bed. Keywords: Gravel beds; smooth bed; submerged hydraulic jump; void ratio; erosion holes
Authors and Affiliations
Amir S Ibraheem, Tarek H Nasrallah, Fahmy S Abdelhaleem, Mohamed E Basiouny
Keywords
Related Articles
- EP ID EP401649
- DOI -
- Views 84
- Downloads 0
Effective Project Preparation Process: A Key Factor to a Successful PPP Infrastructure Development
Abstract:Management of PPP project preparation process according to WEF (2013) is quite complex because it involves large team and multiple stakeholders such as ministries, regulatory organs and regulations, engineering...
A Feasibility Study on the Mechanical Properties of Concrete by Replacing Cement with Animal Bone Powder
Abstract:The indiscriminate disposal of animal waste in the environment has led to the search for solution by recycling these wastes, which includes the use of animal bone waste in the construction industry, as a partial...
Thin Film Nanocomposite Membrane Impregnated with Clay Nanoparticles for Water Desalination
Abstract:Fabrication high performance reverse osmosis (RO) membrane at low cost is necessary in desalination industry. In this paper, we report the use of clay nanoparticles (NPs) to improve RO thin film composite (TFC)...
Physical Characteristics of Grout for Low Density Roads
Abstract:The presented study represents the results of an experimental study handled with developed grouting materials. These experimental studies cover the effects of some mineral Admixtures and chemical admixtures on t...
Influence of Gravel Beds on Erosion of Sand by Submerged Jets
Abstract: This paper shows experimentally effect of gravel beds to reduce erosion of soil downstream of submerged hydraulic jumps by using a physical model, gravel beds are employed downstream of radial gate to dissipate...