PERENCANAAN TEKNIS PEMBANGUNAN BENDUNGAN PELOSIKA KAB. KONAWE

The Pelosika Dam is one of the national strategic projects located in Konawe Regency, Southeast Sulawesi Province. The construction of this dam is planned to support the sustainable management of water resources and improve the welfare of the people in the surrounding area. The scope of technical planning includes the planning of dam bodies, spillway buildings, avoidance channels, and intake buildings. The analysis was carried out through hydrological calculations with the latest rainfall data from the GPM Satellite for 2022-2024 to determine the planned flood discharge, hydraulic calculations to determine the overflow capacity and dimensions of the avoidance channel, and also stability analysis to ensure the safety of the dam body against rolling force, shear and soil bearing capacity (DDT).
Flood tracing was conducted using the Nakayasu HSS method with a repeat time of Q25th 1089.12 m3/s, Q100th 1144.50 m3/s, Q1000th 1214.92 m3/s and QPMP 1975.88 m3/s. The planning results show that the design of the Pelosika Dam on the dam body uses the type of upright core zone excavation, ogee type overflow building, circle type avoidance building, tower type extraction building that has met the technical aspects and is expected to be able to provide optimal benefits in water supply, flood control, and environmental quality improvement in the Southeast Sulawesi region.