ISSN (print) 1995-2732
ISSN (online) 2412-9003


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This article examines the problem of decreased throughput of dredges when operated at below zero temperatures. This problem is particularly relevant for deposits located in the Far North, where the mining season is constrained by climate. The authors describe the available techniques that can help extend the mining season and propose an isolation method based on the use of artificial materials. The application of similar structures in the mining industry is considered. The existing facilities are used for storing waste dumps, to protect the environment from dust and for other purposes. Polycarbonate was selected as the most potentially efficient material for the isolation of dredging works. The parameters are analysed that affect the temperature inside the isolated space. These include the following sources of heat: the water of the dredge open cut, insolation, dredge heaters and others. The authors established how each parameter effects the air temperature inside the isolated system. A mathematical model has been developed for determining the temperature inside the isolated space of a dredge open cut depending on the above-mentioned sources of heat. The model allows for heat losses which occur through the walls of the structure and through the gaps between the insulating material and the surface on which it is resting. The authors also give an example showing how the temperature changes in the isolated space and what throughput the dredges can run at when the proposed technique is used in the Far North environment. Depending on the operating conditions and the type of the dredge, this may bring a 25 to 35% increase in the annual throughput. This proves the feasibility of extending the dredge mining season in the winter period.


Placer deposit, dredge, throughput, mining season, winter period.

Victor E. Kislyakov – D.Sc. (Eng.), Professor

Siberian Federal University, Krasnoyarsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ravil Z. Nafikov – Postgraduate Student

Siberian Federal University, Krasnoyarsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Pavel V. Katyshev – Engineer at the Department of Opencast Mining

Siberian Federal University, Krasnoyarsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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