Andrade Gutierrez Teixeira Duarte – GESI-TP – Zagope
(GMAC – Groupement Metro d’Alger Centre)
Work’s Geotechnical Consultancy
The project is an extension to North of the Line 1 of Algiers underground , acrossing the downtown in the historic area where is located the Casbah, from the Emir Abdelkader Square to Martyrs Square, with a total extension of 1.750m. The project comprises the following works:
- Tunnel with a total length of 1.450m;
- Martyrs Square Station with 144m long and sections with 23m and 18,5m wide;
- Boumendjel Ali Station with 156m long and 18,5m wide;
- Three ventilation shafts and two shafts to connect to Martyrs’ Square and Ali Boumendjel Stations.
The tunnel crosses a schist mass characterized by presenting different states of weathering and fracturation degree. The ground cover of the tunnel is between 15 and 30m.