To build a metro station on Kopylova they plan to freeze the soil

In Krasnoyarsk, they are looking for a contractor to build a foundation pit for a vestibule for a metro station on Kopylova Street and plan to freeze the soil for this. The corresponding tenders appeared on the government procurement website.

The first contract is planned to be concluded for the creation of a pit structure for an inclined entrance vestibule. Its preliminary cost is 171.61 million rubles. The construction period is 120 days from the date of signing the contract. As in other sections of the metro construction, it will be necessary to create the foundation pit from secant piles. Recall that the depth pit of the dismantling panel chamber located nearby – 48.7 meters.

The second contractor will have to carry out a complex of construction and installation work to freeze the soil during the construction of the escalator tunnel. The tunnel itself, in which the escalator will be located, will have a diameter of 8.5 meters. The problem is that it must pass through an “aquifer complex”, which can lead to subsidence.

Therefore, it was decided to freeze the soil, which will stabilize it, after which the tunnel will be immediately closed with a lining of cast iron tubing. The draft agreement states that during the work there should be 4 refrigeration units on site – three working and one reserve. The duration of the contract is 510 days from the date of connection of the contract. The initial cost of the work is 108.8 million rubles.