The Confluence SHP is being built on the border of the municipalities of Turvo and Prudentópolis, in the state of Paraná. The project has more than 4 km of internal access to the main units, and its bus, located downstream of the confluence of the Marrecas and Cachoeira rivers, will be executed in roller compacted concrete and fertilizers for temporary diversion of the river.
At the end of the work, the barred water in an area of more than 28 hectares will flow through a tunnel of 971 m long, 4.5 m in diameter and will travel more than 3,000 m through the adduction channel, until reaching the loading chamber and high pressure water intake. At this point, the water will be directed to the forced conduit, 260 m long, 3.40 m in diameter and unevenness of approximately 101 m, arriving at the Powerhouse, where there will be 2 Francis-type turbines that together will generate 27.5 MW of power.
The structures for diversion of the river are already in the completion phase, and this month the execution of the concrete compacted to the busbar roll was started. The adduction tunnel is underway and has passed a challenging initial stretch, with an upward trend in daily advancement.
On the other hand, the excavation works of the tunnel outlet, with more than 340 thousand m³ of excavation, exceeded 40% of the advance. The adduction channel works are also underway, with an initial focus on the underground crossings of the existing streams and rainwater drainage. The powerhouse is in the execution phase of the concrete structure, and more than half of the walls were concreted using the sliding forms method.