Alexandre Mahfuz

Experience

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  OEC

  Mar 2006 - Mar 2020

  Construction of a new metro line in Rio de Janeiro - Brazil, with 16km of extension (5km in TBM and 11km in NATM) and 6 (six) new stations.- Design, procurement and operation of the TBM EPB Convertible, with 11,51m of diameter, including the implement of the jobsites and facilities.- Excavation in two distinct types of soils: Rock (up to 230 MPa) and cohesionless Sand with high groundwater level. Including: Hyperbaric interventions, transition zones crossing (Rock / Sand), Submerged Breakthrough and launch of the TBM using a sealing ring.- Plan and execute geotechnical investigations and soil treatments.- Monitor subcontractor's performance according to the contractual and technical parameters.- Coordination of works with clients, third parties and other disciplines of the project, including the review of engineering design and planning.- Review contractual issues, including claims and litigations.- Final inspection of tunnels and commissioning of the electromechanical systems (Energy 22kV, Ventilation, Escalators, Elevators, Pumping Systems).- Safety: Ensure that the safety plan is implemented. Including all safety rules and regulations.- Leader of a qualified team, including different cultures and nationalities.- Tax management during the import of the equipments resulting in a reduction of rates of about 20%.- Responsible for all the logistics and assembly of the equipments (circa 3.000 tons), within one of the largest and populated urban centers in Brazil. Show less Construction of a subway station in Rio de Janeiro - Line 1. Excavation of 1.5km in Rock (up to 230 Mpa) using NATM method (Drill and Blast).- Excavation of the tunnel in Rock (up to 230 MPa), using "Drill and Blast" technology.- Assembly and commissioning of the railroad and the electromechanical systems.- Monitor subcontractor's performance according to the contractual and technical parameters.- Safety: Ensure that the safety plan is implemented. Including all safety rules and regulations. Show less Construction of a new metro line in São Paulo - Brazil, with 13 km of extension (6 km in TBM and 7 km in NATM) and 11 new stations.- Tunnel Engineer in the excavation using a Herrenknecht TBM EPB, with 9,5 meters of diameter.- Excavation mainly on a sandy clay soil, with high groundwater level.- Lead shift operation, including excavation, maintenance, grout injection, ring building.- Safety: Ensure that the safety plan is implemented. Including all safety rules and regulations Show less

  • TBM Tunnel Manager

    Aug 2010 - Mar 2020

  • Tunnel Engineer

    Dec 2007 - Jul 2010

  • TBM Site Engineer

    Mar 2006 - Nov 2007
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  SACYR

  Mar 2020 - now

  Construction / TBM Tunnel Manager

  Join Venture of Sacyr | Galvão | SA PaulistaExtension of the Line 2 of the São Paulo Metro. Including 7,3 km of tunnels in TBM and 8 new Stations.Construction manager of the project with 2 stations, 5 Ventilation shafts, 7 km of tunnel with a TBM EPB with 11,65 m of diameter.