Transport Sediment Analysis Using Bed-load: Case Study Bilibili Reservoir

This study conducted to analyze transport sediment using bed-load in the Bilibili reservoir case, South Sulawesi, Indonesia. The laboratory test has done to determine the basic characteristics of samples consisting of sediment concentration tests and specific gravity tests. Furthermore, the data analysis using Van Rijn formulation to calculate bed sediment discharge (Qb) and flow rate (Q), and analysis result found the relationship between bed sediment discharge and flow rate expressed in equation y = 12.314x1.4292 where y = x. Qb = Q. Therefore, the existing sediment transport amount of the Bilibili reservoir for 2014 to 2018 is 1.102 million tons, 1.426 million tons, 0.737 million tons, 1.277 million tons, and 0.895 million tons, respectively. Besides, total sediment is 216,9261.2 tons/year equivalent to 6,142 m3/year, and the percentage of bed sediment transport to total sediment is 70.5%. The analysis results also indicate an increase in bed sediment discharge due to an increase in river water discharge. The condition explains that increasing the flow rate causes the amount of transported sediment to increase.