Self Drilling Soil Nails Solution for Sochi
The 22nd Winter Olympic Games were held in Sochi, Russia, in February 2014, and visitors from all over the world attended. Sochi has a subtropic climate and is a famous resort city along the coast of the Black Sea. In preparation for the Games, adequate facilities and significant infrastructure improvements were required. Soil nails were used for the Kurortny Bypass and the Laura Biathlon Stadium to overcome challenges with regard to geotechnical instability and access, and installation difficulties for equipment and materials. Over 2,800 athletes plus visitors demanded increased road capacity from the airport to the Olympic Games facilities and Sochi City.
Sochi’s landscape is diverse with mountains, sea and slopes. It also lies in an area with high seismic activities-up to 8.0 on the Richter scale. These circumstances led to challenges with regard to geotechnical instability and access, and installation difficulties for equipment and materials. The transportation infrastructure necessary to support the Olympics included roads, tunnels, bridges and railroads. Many of the routes encompassed significant elevation changes from sea level to 2,500m into the Caucasus Mountains. Retaining walls and slope improvents were needed for widening of narrow roadways, and excavation support systems were required for many of the new facilities constructed.
Quick and reliable technologies were essential for Sochi’s projects. Self drilling soil nails were chosen for many project, two of which are presented here. Self drilling soil nails were beneficial because they were drilled and grouted in one operation and also offered significant cost savings. They were also suitable for working in Sochi’s variable terrain.