Effect of debris on the upstream hydraulic head of sluice gate

Abstract

Debris caused during flood events and transports by the river maybe lead to many hydraulic troubles due to accumulated debris upstream hydraulic structures. Debris caused during flood events and transported by rivers leads to many hydraulic troubles due to accumulated debris upstream of the hydraulic structure. Therefore, many authors were preoccupied with stopping or reducing this debris from accumulating. Many studies dealt with the debris' effect on hydraulic structures, especially on scour at the weir and pier. However, studies on hydraulic flow characteristics under the sluice gate are few and limited. In this study, the effect of accumulated debris upstream sluice gate on the approached water depth was highlighted. The study found that the approached water level increased by 14% when accumulated debris increases, while a 40% decreased upstream water level led to debris passage beneath the gate. The gate opening and debris volume were more sensitive to the water depth upstream the sluice gate.