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Interceptor Rio Bogotá
Requirement
tunnelling project
 |
Employment | Sewage |
|---|---|---|
| Geology | Sand, silt, clay | |
| Tunnel Length | 4,371 m, 5,086 m | |
| Diameter | 4,490 mm |
Solution
machine data
| Machine Type | EPB-Schild | |
|---|---|---|
| Support Techniques | Segmental Lining | |
| Cutterhead Power | 630 kW | |
| Torque | 2,380 kNm |
The water authority of Bogotá, the million-resident metropolis (Empresa De Acueducto Y Alcantarillado De Bogota, EAAB) ordered an interceptor to avoid in future the discharge of untreated sewage into the rivers Bogtá, Fucha and Tunjuelo. The aim of this project was the improvement of living conditions of more than three million residents of the districts Fontibon, Kennedy, Puente Aranda and Bosa. The sewage tunnel parallels the Cundinamarca Canal and the Bogotá River and runs from the estuary of Fucha to the confluence of Tunjuelo with the Bogotá River. The length of the tunnel is 9,4 km with a diameter of more than 4 m and is lying till 15 m under earth´s surface.
On June 23, 2009, the excavation of the "Interceptor Rio Bogotá-Fucha" was finalized successfully and ahead of schedule. The Herrenknecht EPB Shield EPB3750AH could excavate the two sections of 4,371 and 5,086 meters through sand, silt and clay in only 19 months. The galleries were characterized with challenging curves with space curves and continuous rise and slope. 44,000 segments were precisely built in – in compliance of a range of tolerance of about 5 millimetres – and 200,000 m³ of ground was excavated.
