was constructed.
LLC «SGM» has played the role of the General Contractor for the construction
of Gryazovetskaya CS, Volkhovskaya CS, Sheksninskaya CS, Babaevskaya CS, Pikalevskaya
CS and Elizavetinskaya CS. This gas pipeline secured the gas supply into Nord Stream
Three underwater crossings were constructed under the Neva River, the Sheksna River and the Saimaa Canal in challenging geological conditions. Pipeline laydown on these sections was performed by the microtunneling method
Construction of the crossing under the Saimaa Canal was complicated with heterogeneous geological soil composition. The microtunnel was formed by use of special equipment directly through a cliff, thus the necessity to stop the ship traffic was avoided
Two gas pipeline sections across Saint Petersburg – Vyborg railroad and Scandinavia motor way were constructed by microtunneling method
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