"The work was carried out in January-April 2021

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To cross the Yenisei, Edinstvo engaged the contractor R.PARTNER from Khabarovsk, which has experience in horizontal directional drilling (HDD). According to R.PARTNER, its specialists performed HDD of four wells, two on each bank, with a total length of 2,452 m (647 m, 586 m, 640 m, 579 m), and laid plastic pipes in them for laying cable. For this work, the company used two HDD machines - Drillto ZT 50-100AT and Vermeer D130×150 (two similar units were stationed as backup in Korotchaevo, 70 km from Novy Urengoy, in case the main machines failed).

in difficult climatic conditions slovenia whatsapp resource - at low temperatures. In addition to the main work, site preparation work was completed, winter roads were prepared to sites on the right and left banks, a winter road across the Yenisei River between the right and left banks was prepared. Winter roads were maintained throughout the entire period of work," the R.PARTNER representative informed.

Between the points where the optical cable exited the HDD borehole on the left and right banks of the Yenisei, there was more than 1 km left in the riverbed. This section of the cable was intended to be buried in the river bed. For this purpose, Irkutsk-based OOO Akva-Eko was involved in the construction, which launched a mini-excavator from the Japanese company Kubota along the bottom of the Yenisei, having removed its engine (the machine was powered by a diesel generator on the surface). A diver operated the excavator. Due to this ingenious technology, which was invented by specialists from OOO Akva-Eko, the fiber-optic cable was buried 1.5 m in the bottom of the Yenisei, which protected it from ice drift, anchors, ejecta fishing line (fins) and objects that the powerful river drags along the bottom and tears any unprotected communications with them.

Considering the significant distances between settlements and the harsh conditions of the Far North, the company used fully self-sufficient shift housing camps (VZhG) to carry out cable work. More than 150 employees of the Unity Construction and Installation Department of various specialties worked in these VZhGs in 45-day shifts throughout the construction.

The construction and installation department of the company Edinstvo carried out work in the most difficult weather conditions. Photo: ComNews
The construction and installation department of the company "Edinstvo" carried out work in the most difficult weather conditions. Photo: ComNews


Vladimir Kruglik, Head of the Production and Technical Department of Edinstvo LLC, noted that the company not only laid the fiber-optic communication line in the ground, but did so in the most gentle way, cutting a narrow trench in the frozen ground. "This method disturbs the soil cover the least, which facilitates land reclamation. After carrying out all the work, the company also ensured the restoration of aquatic bioresources, releasing a total of more than 100 thousand young northern fish," Vladimir Kruglik said.