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Tunnels to the Nizhegorodskaya are completed

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14.09.2018

In the first half of September, right and left running tunnels were drilled from the access chamber at the site № 25.3 site to the Nizhegorodskaya station of the Big Circle Line.

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Herrenknecht S-832 "Olga" and Herrenknecht S-328 "Svetlana" tunneling complexes have passed more than 1 km at a depth of 26 meters in the watered grounds since November last year.

The route of the section stretched under the industrial and transport infrastructure of the Lefortovo and Nizhegorodskiy districts. The main difficulties were connected with the sinking under the railway tracks of the Gorkovskiy direction. To ensure that during the passage of the shields under the tracks to prevent subsidence or warping of the rails, special safety bags were used.