Roki tunnel is a road construction,which connects South and North Ossetia. It is located on the section of the Transcaucasian highway, which lies under the mountain Sokhs. Its length exceeds three and a half kilometers. The northern gate of the passage is at an altitude of 2,040 meters above sea level, the mark of the south has crossed the line of 2,110 m.
The construction of the passage began in the thirtiesXX century. It was marked by a loud explosion, which was carried out a few kilometers from the Upper Ruk settlement. The main goal pursued by the creators of the project “Roki Tunnel” was to unload railway lines going in the direction of the Caspian and Black Seas.
At the moment, the facility serves the highway leading from Russia to the cities of South Ossetia. Ten years ago, it provided the shortest road to the border areas of Iran and Turkey.
After a long idle, which amounted toalmost forty years, it was decided to continue to build the Roki tunnel. N. Nagaevsky spoke as the master plan developer. He used drawings of Ruten Glagolev. This fact was discussed in detail in the periodical "Planned economy", which came out in circulation in 1976.
The total cost of the planned work amounted toalmost 100 million rubles. It should be borne in mind that the original path was significantly reduced. According to R. Glagolev, the Roki tunnel was supposed to originate from a place called Ruk. The main difference of this area is the minimal threat of avalanches. However, the savings were so obvious that his recommendations were ignored.
In the future, the technical condition of the passagedemanded global modernization. This was facilitated by the insufficiently thorough research. Employees of the Leningrad and Caucasus branches of Giprotrans complained about the complexity of the relief characteristics of the region. The road through the Roki tunnel lay at great depth, which also impeded the large-scale research work of engineers.
To eliminate the risk of collapse of the maincorridor, workers built an auxiliary. It was used only for reconnaissance purposes, and later became a component of the ventilation system of the building. The main rock in which the tunnel was laid was rocky ground.
The tunnel penetrated the main Caucasian ridgeimmediately from two sides. Explosive activity was carried out at the southern and northern portals. For these purposes, the new Austrian method was used. It was involved at that time the latest and most productive equipment. The construction was carried out almost around the clock.
Removal of mining was carried out on trucks of Soviet production. Frost-resistant concrete M 300 was chosen for decoration. In one calendar month, sinkers mastered up to 45 meters of soil.
Reconstruction of the tunnel began seven years ago.In 2010, its first stage started, during which the technical adit was updated. The old cover of the corridors was completely removed and replaced, modern communication lines were installed.
To overcome 600 meters of output,it took exactly thirty days of continuous work of two teams at once. In 2012, all the planned actions were completed, and under Roki Pass, a temporary road connection was temporarily open, but only in test mode.
The next stage was to changewaterproofing layer, the expansion of the cross section of the passage and the finishing of the internal space of the structure. On November 5, 2014, the official opening of the passage under the mountain Sohs took place.
