1. Construction Projects in Turkmenistan Ashgabad Drainage – Communication Tunnel 2009 - 2012

2. Task Lowering of groundwater level in most flooded areas of the city. Lowering of groundwater level in most flooded areas of the city. Collection and transport drainage water and sewage outside the boundaries of the city by gravity through the Karakum River Collection and transport drainage water and sewage outside the boundaries of the city by gravity through the Karakum River Installation of utilities – water pipes, electrical cables, low-voltage lines inside the tunnel. Installation of utilities – water pipes, electrical cables, low-voltage lines inside the tunnel.

3. General Information Tunnel construction is carried out under complex hydro geological conditions in the city with already developed system of communication. Tunnel construction is carried out under complex hydro geological conditions in the city with already developed system of communication. Seismicity of the area – up to 10 points Seismicity of the area – up to 10 points The length of the tunnel with the outer diameter of 6m – 16500km The length of the tunnel with the outer diameter of 6m – 16500km The length of the tunnel with the outer diameter of 3.5m – 13820km The length of the tunnel with the outer diameter of 3.5m – 13820km There are 31 Construction Chamber which were constructed by the method of “wall in the ground” There are 31 Construction Chamber which were constructed by the method of “wall in the ground”

4. Construction of Drainage-communication tunnel

5. Fragments of construction chambers

7. Typical Chamber Total 21

8. Karakum River Underground Passage

9. Construction Chamber

10. Impervius Waterproofing & Anti-corrosion

11. Application Technique Impervius Anti-corrosion Coatings

12. Work in Progress 2009

13. Training 2009

14. VIDEO PRESENTATION