Owner: DHW - Algiers / Ministry of Water Resources
Construction Company: Sabir Intl / Hydro Technique SPA
Location: Algiers, Algeria
Period: 12 Months
Technology: Tunneling - TBM Open Shield
Type: Construction of a collector with a diameter of 2.6m over a length of 2500m
Renovation and maintenance of the tunnel-boring machine included technical assistance and excavation of 100 m as a guarantee. The geological condition was very hard rock and huge water. It was challenging to overcome with outdated technology of TBM open shield.