Evaluating Empirical Equations to Predict Downstream Scour Depth of Jet Ski Overflows: A Case Study in Shahid Abbaspour Dam

Abstract

Shahid Abbas pour Dam is located at a distance of about 50 kilometers from Masjed Soleiman and a distance of about 150 km North East of Ahwaz. Flood disposal systems and energy dissipation in the construction of a dam are built to prevent flood damage and water depletion in excess of the capacity of dam reservoir. In bucket thrower, water flow reaches the ground bed in front of the structure after passing through the edge of the bucket and the formation of a parabolic curve. Although high-speed flow is associated with energy loss; but due to the collision speed and energy bed erosion and creating a scour hole will be possible. That's why 20 equations were provided to determine Scour depth of the spillway coastal martyr of Shahid Abbas pour Dam; was modeled by Mike software; was coded by Matlab software and was compared with the current situation. The results showed the following equations were introduced as the prior equations to estimate the scour depth in the research range of the present study: 1. National Institute of Science and Technology Laboratory of the French hydraulic; 2-Mason; 3- The organization of study and development of electrical equipment in France. These equations are highly adapted to the existing scour according to local circumstances and information available from the region.