A hydraulic jump stilling basin with six legs concrete elements

Mahmood Shafai Bejestan, Shahid Chamran University, Ahvaz, Iran
P Chahardahcherik, Shahid Chamran University of Ahvaz, Iran

Abstract

The hydraulic jump stilling basins are among the kinetic energy dissipater structures which are commonly designed downstream of gates, chutes and drop structures. The geometric dimensions of this structure depend mostly to the hydraulic jump characteristics as well as the quantities of the uplift pressure. In the present paper series of experimental tests have been conducted for a basin which its bed is covered with six-legs concrete(SLC) element tied together. The elements are placed on the top of alluvial bed to study the characteristics of the jump. Tests were performed for different flow conditions (Froude number ranged from 5.07 to 8). The results showed that generally the SLC elements reduce the jump length and the sequent depth. The average reduction was found to be equal to 24.8% and 14.3% respectively. The maximum scour depth at the downstream of the SLC basin also found to be reduced significantly and the scour hole is developed faraway from the basin.

This paper has been withdrawn.
 
Jun 29th, 4:00 PM Jun 29th, 6:00 PM

A hydraulic jump stilling basin with six legs concrete elements

Portland, OR

The hydraulic jump stilling basins are among the kinetic energy dissipater structures which are commonly designed downstream of gates, chutes and drop structures. The geometric dimensions of this structure depend mostly to the hydraulic jump characteristics as well as the quantities of the uplift pressure. In the present paper series of experimental tests have been conducted for a basin which its bed is covered with six-legs concrete(SLC) element tied together. The elements are placed on the top of alluvial bed to study the characteristics of the jump. Tests were performed for different flow conditions (Froude number ranged from 5.07 to 8). The results showed that generally the SLC elements reduce the jump length and the sequent depth. The average reduction was found to be equal to 24.8% and 14.3% respectively. The maximum scour depth at the downstream of the SLC basin also found to be reduced significantly and the scour hole is developed faraway from the basin.