Modeling of Sedimentation Pattern in Bukit Merah Reservoir, Perak, Malaysia

摘要

Numerical modeling assessment were conducted in order to determine the sedimentation and hence able to predict the sedimentation pattern in Bukit Merah Reservoir, Perak, Malaysia. Bukit Merah is one of the oldest reservoirs in Malaysia constructed in 1902. Simulation of flow distribution and sediment transport were made in CCHE2D mathematical model for quantitative assessment. This research only simulates of up to 7 years due to time limitation. The velocity distribution shows significant impact to sediment distribution and accumulation. The accumulation observed at the upstream and downstream is likely resulted from the bank and local erosion in the reservoir. Through the predicted model, the sediment on the eastern side of the upstream had risen high enough to form a delta. The delta is rapidly accumulating the coarsest fraction of the sediment while finer sediment distributed entirely into the reservoir.