Main Clients and Projects

 
 
 
 

Santo Antônio Tailings Storage Facility, with a volume of more than 40.000.000 m3 of compacted landfill and 500.000.000 m3 of stored tailings. Services provided:

• Conceptual, basic and executive design for more than 20 stages of dam lifting

• Preliminary construction design and dam building stage planning

• Permanent monitoring of the dam through the analysis of the of the instruments reading installed in the dam

• Conceptual, basic and executive design of emergency spillway system

• Conceptual, basic and executive design of surface drainage system including downstream sediments containment  basins

• Several studies of water balance and available capacity of the dam reservoir

• Several studies of the potential downstream damage during a in tailings dam rupture (Dam Break)

• Elaboration of OMS Manuals

• Elaboration of Emergency Plan

• Several Safety Inspections in compliance with the requirements of Federal Law 12.334 (National Policy for Dam Safety)

• Reclamation plan conceptual project for the end of useful life of Morro do Ouro mine and rehabilitation of areas filled with tailings

• Conceptual, basic and executive project of several dikes for reservoir operation optimization, both from the waste disposal and water reuse points of view

• Hydraulic, hydrological and environmental studies on the  reservoir water

• Elaboration of a variety of environmental studies

• Construction Monitoring

Specific Tanks. Lined tanks with double waterproofing barrier for disposal of sulphated tailings. Provided services:

• Conceptual, basic and executive projects of Tanks 4 to 11

• Elaboration of Operation Manuals

• Several safety inspections in compliance with the requirements of Federal Law 12.334 (National Policy for Dam Safety)

PSAT (Processing Santo Antonio Tailings).

Project for reprocessing part of the tailings deposited in Santo Antonio Dam. Perfomed services:

• Consolidation of research information and geotechnical testing for laboratory and field

• Initial geotechnical studies

• Executive project for water storage dyke

• Interpretation of seismic and dilatometric piezocone tests in excavations areas

• Stability analysis of slope excavation considering several mining plans

• Instrumentation project from the area of the excavations

• Reading analysis of installed instrumentation in excavation areas

 

Provided services:

• Consultancy in mining tailings dams with the aim of improving the technical analysis of the Socio-environmental Risk area.

 

Water and Tailings Dam.

Provided services:

• Basic and executive project of 3 lifting stages for tailings dam;

• Conceptual and basic water storage dam projects in RCC (Roller-Compacted Concrete).

• Tailings dam safety inspections in compliance with the requirements of Federal Law 12.334 (National Policy for Dam Safety).

 

Provided services:

• Conceptual project of 3 lifting stages for tailings dam

• Executive project of the Stage 1 for the tailings dam

• Hydrological studies in general

• Water balance and reservoir filling studies

• Executive project of perimeter diversion channel, emergency spillway and overflow channel

• Dam Break studies

• Elaboration of Dam Safety Plans

• Elaboration of Emergency Plans

• Executive project of wasterock storage facility

• Safety inspections in compliance with the requirements of Federal Law 12.334 (National Policy for Dam Safety)

 

Tailings Disposal System – Vené Tailings Dam and others. Provided services:

• Conceptual, basic and executive project of 2 lifting stages for Vené Tailings Dam

• Preliminary project of earthworks and planning of construction stages of dams

• Hydrological studies in general

• Conceptual, basic and executive design of emergency spillway system;

• Conceptual, basic and executive design of surface drainage system

• Dam Break studies

• Elaboration of Dam Safety Plans

• Elaboration of Emergency Plans

• Safety inspections in compliance with the requirements of Federal Law 12.334 (National Policy for Dam Safety)

• Location studies for new dams

• Construction Monitoring

• Pre Feasibility Studies (PFS) of dams according to site reestructuring

 

Stabilization of blocks and sectors of rocky slopes.

Provided services:

• Geological survey field

• Topographical survey field

• Preparation of geological-geotechnical mapping

• Stability analyzes

• Analysis of surface drainage conditions

• Diagnosis of each situation

• Elaboration of executive project

 

Tailings Storage Facility Mirandinha composed of Mirandinha and Santarém Dams.

Provided services:

• Advanced conceptual project of 12 possible alternatives for the Mirandinha Dam and construction and lifting of 110 meters of Santarém Dam

• Geologic structure mapping of the area of influence of the dams

• Preliminary project of earthworks and planning of construction stages of dams

• Preliminary project of the tailings disposal

• Hydrological studies in general

• Conceptual project of the internal drainage system

• Conceptual project of fine contention dyke

• Conceptual project of spilway system of both dams

• Conceptual project of surface drainage system of both dams

• Preliminary reclamation plan project

• Preparation of spreadsheets of implementation and operation quantities

• Preparation of schedules for project implementation

• Histogram preparation of skilled labor and equipment

 

“F” Tailings Dam and Wasterock Storage.

Provided services:

• Conceptual, basic and executive project of 3 lifting stages for tailings dam

• Studies of water balance and reservoir filling

• Conceptual project of wasterock storage

 

Provided services:

• Crosscheck study for the Murici Deposit project (lined deposit facility for hazardous residues)

• Basic study and planning study for dismantling, removal and road transportation of tailings from the Old Dam and the Lavagem Creek Dam to the Murici Deposit

• Executive Project for tailings collection and release from the Old Dam and from Lavagem Creek Dam to the Murici Deposit

 

Provided services:

• Several technical advisory and engineering consulting studies for the installation and operation of the following mines: Maracá Mining, in the state of Goiás, Serra da Borda Mining, in the state of Mato Grosso and Fazenda Brasileiro and Jacobina Minings, in the state of Bahia

• Conceptual and executive project of the Fines Dyke (dam for the containment of gravimetry-originated fine ore) at the Serra da Borda Mining and Metallurgy

• Executive design of the Fines Dyke spillway and the perimeter channeling system for surface waters deviation for release into Casarão Dam’s lake

 

Provided services:

• Executive project of Gregório Dam for iron ore tailings disposal;

• Conceptual, basic and executive projects of Bocaiúva Dam for iron ore tailings storage resulting from the mine expansion project

• Technical and geotechnical advisory services in studies verifying safety and stability of different structures (natural and artificial slopes, containment walls, etc.) in the mine area

• Water balance studies for Gregório Dam and preparation of technical reports for environmental agencies

• Conceptual, basic, and executive projects of the dams surface drainage system;

• Dam Break for Gregório Dam

 

Provided services:

• Basic project of lined sludge disposal landfill for Sabesp’s Taiaçupeba Water Treatment Plant, located in Suzano - SP.

 

Provided services:

• Tailings Storage Facility: analysis of dam alternatives and water reuse;

• Elaboration of internal drainage system project for contaminated and potentially-contaminated surface waters.

 

Provided services:

• Alto Tietê System (SABESP water supply system for the larger São Paulo metropolitan area): conceptual study for Itatinga Dam construction works and Itatinga-Itapanhaú link; analysis of dam alternatives in riprap and roll compacted concrete (RCC).

• Elaboration of the technical proposal for the entire civil construction portion for both powerplants of the Companhia de Força e Luz Cataguazes Leopoldina (MG).

 

Consulting in water resources for the project of HPP Gallito Ciego (34 MW), in Peru.

Provided services:

• Water compatibility studies for uses of irrigation and power generation due to the future power plant installation;

• Lake depletion studies with working volume of 400 hm³.

 

Implementationof the Pachicutza Project.

Provided services:

• Basic and conceptual projects for tailings disposal in dumps;

• Dam alternatives study: hydraulic, hydrological, geological, geotechnical and cost analysis.

 

Provided services:

• Conceptual project for the tailings disposal system;

• Cost analysis of embankment alternatives;

• Hydraulic and hydrological studies..

 

Provided services:

• Consulting services in instrumentation and technical areas and technical/operational evaluationof the concrete structures conditions in several plants.

 

Provided services:

• Studies on water head partition for the HPPs Gatos I and Gatos III;

• Basic project of the HPP Gatos I (33MW).

 

Provided services:

• Hydraulic executive project of the HPP Xingó (5,000 MW – CHESF);

• Hydrological studies of tunnel and hydraulic project and flood reversing construction works of Ribeirão dos Meninos basin (DAEE – SP);

• Hydro-Electrical use ofHPP’s on River Juba - HPP JUBA I (42 MW) and HPP JUBA II (42 MW) (Itamarati Agropecuária):

o Expansion plan in areas irrigated for soy and cotton crops and sale of excess power to CEMAT - Centrais Elétricas Matogrossenses:

o Feasibility studies and basic projects of 5 power plants upstream of JUBA I (~58 MW), including correction adjustments of Rivers Juba and Jubinha;

• Technical advisory in the proposals for the power plants Guilman-Amorin, Santa Branca, Bonfante, Monte Serrat, Gatos I, Rosal, Campos Novos and Cana Brava.

 

Provided services:

• Del Molle Project, Province of San Luis, Argentina: analysis of dam axis alternatives for irrigation, including correction adjustments and preliminary hydraulic and hydrological studies and also structural conceptual studies.