| Summary: | Bener Reservoir construction is an initial plan that will function for the
purposes of irrigation, electric power, etc. The hydroelectric power is in the
Bogowonto River. Since the buildings are constructed with very high costs, the
dam must meet the necessary design volume, safety, and the spillway should be
able to pass over the flood discharge plan. To support the work of Bener Dams,
modeling is then conducted. This modeling was done in the Hydraulics
Laboratory of Civil and Environmental Engineering, Gadjah Mada University
with a scale of 1: 100.
This study aimed to compare the results of the analysis and experiment of
the spillway in order to get the illustration of the hydraulic safety of the dam. The
model simulations performed at several time in periodic flood of two annual
discharges to the maximum flood discharge (QPMF), so that the exact illustration
of the hydraulic behavior of the spillway structure can be discovered.
Based on the result, it was known that the spillway capacity of the building
is still within the safety limits, but there are some differences between the results
of the analysis and the measurement of the water level in the existing models,
especially in the discharge channel . It is because of the unevenness of the water
flow that pass through the transition channel which caused by the bending water
flow by the transition channel and ultimately causing the cross flow. Overall, the
simulation model is still needed for further evaluation to investigate the hydraulic
phenomenons that occured.
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