Analysis of Sediment Movement Around Gabion Buildings as River Bank Protectors

Abstract

Urban areas that have developed, if not managed properly, will cause a lot of problems in the future, which not only bring good effects but also bad influences that will disrupt natural conditions and the environment itself. Rivers as one of the potential water resources can contribute to human, animal and plant life. Therefore, there must be a balance between water availability and water demand. The factor that affects the reduced availability of water is due to the sediment that settles at the bottom of the river. The decrease in the river's carrying capacity causes sedimentation on the banks of the river or in the middle of the river channel. Sediment occurs due to an imbalance in the flow velocity in the river. Flow velocity every year can affect the distribution of sediment which is dominated by sediment with fine grain size and sand. To keep the river channel from changing, it is necessary to strengthen it, especially at river bends, namely by making gabion walls. Gabion is a construction made of crushed stone arranged by woven wire. To get a high level of confidence, research and research is carried out using a hydraulics model which in making the model is determined based on the relationship between parameters expressed in dimensionless numbers or using dimensional analysis.