This project aimed at construction of 1400 m long drainage adit with 8m2 clear section for an export of subsoil water from «Zoravar Andranik» Station to the channel of the Hrazdan River and ceasing the operation of unwatering plants in the vicinity of «Zoravar Andranik» and «Republic Square» Stations.
The underground mining has been carried out under complicated mining and geological conditions with abundant influx of subsoil water, when the thickness of ceiling to the residential buildings and communication lines on the surface was minimal (10 – 15 meters).