In 2015, 10 km southwest of Tbilisi, a landslide resulted into the collapse of the road body (Tskneti – Samadlo Roadway) on the areas 340 and 35 m long.

The specialists had a task to develop the complex project solutions on ground protection on the parts of the roadway under reconstruction.

The problem solution required:

• flattening the slope upper part and extraction of the landslide debris;
• fastening the eroding edge of the rock mass by means of nails and installation of the rope cover system;
• installation of flexible rockfall barriers above the protected area.

The project documentation included the following:

• inspection of the destroyed road sections;
• engineering and geotechnical research;
• modeling the latent processes which can develop after a landslide;
• complex ground protection project for the reconstruction and improvement of the destroyed road sections;
• the project on landslide hazard slopes strengthening;
• the project on the additional nail strengthening of landslide hazard areas located above the curb level.

In course of construction the following solutions were implemented:

• nail strengthening of the soil mass under the concrete groundwork foundation and higher (to prevent its further displacement);
• construction of the concrete foundation based on GEOIZOL-MP root piles;
• assembling the reinforced earth embankment with front precast concrete units;
• nail strengthening of landslide hazard areas located above the curb level using the 2D-Geo system.

Устройство армогрунтовой насыпи

Общий вид сооружения

Нагельное закрепление склона с применением системы 2D-Geo

Customer: CAUCASUS ROAD PROJECT Ltd

Implementation: 2016-2018.