Itabirito, State of Minas Gerais, Brazil

IMPROVED SAFETY AT THE MARAVILHAS II MINING DAM

Client

VALE

Year

2025

Key facts

Mining dam that has retained for years the waste from the mining tailings generated in the Pico mine. Additionally, the dam receives sediments from the upstream area and accumulates water for recirculation at the mine.

Implementation of a new spillway for improving the safety of the dam, with the construction of a stepped canal connected to the reservoir’s intake structure. Maximum flow rate 80.9 m³/s, slope 88 m.

Rehabilitation of an eroded embankment slope with a 250 m long gully, up to 40 m deep and 86 m wide at surface level.

Services

Design of the new spillway, the drainage canal and the rehabilitation of the eroded area.

3D numerical modelling of the system.

Support services during construction.
MARAVILHAS26

Reinforcement of the Maravilhas II mining dam

Installation of a new spillway to improve the safety of a mining dam  Introduction  Commissioned by the mining company VALE, ENGECORPS has developed the conceptual design to reinforce the Maravilhas II...

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