Two dimensional (2-D) physical model flow movement in alluvial river base

The Musi River in South Sumatra province experiences frequent landslides, particularly along its outer bends near the main road in Bailangu Village. Current slope stabilization efforts involve the construction of structural buildings at landslide-prone areas. However, it is crucial to conduct research on the flow characteristics of the riverbed, especially at the bend locations, to provide valuable insights for future improvement plans. This study employs a topographic survey approach, including situational maps, long sections, and cross sections, along with sediment sampling from the river. Additionally, physical model experiments are conducted in the laboratory to simulate real conditions and depict phenomena observed in the physical river model that align with the field prototype, assisted by laboratory-scale river simulations. The experimental results reveal a strong correlation between erosion depth (de) at specific distances (x) and flow discharge (Q) during running tests of varying durations (10, 15, 20, 25, and 30 minutes), with correlation values of 98.8%, 97.8%, 89.6%, 70.49%, and 92.5%, respectively. Although the 25-minute experiment exhibits a relatively lower correlation value compared to others (74.49), it still indicates a significant relationship between flow discharge and erosion depth, as evidenced by the positive correlation (+) among the existing parameters.