Authors

Dynamics of the lake water temperature regime at the bottom of the borehole

DOI: 10.17586/1606-4313-2018-17-2-28-33
UDC 536.4

Dynamics of the lake water temperature regime at the bottom of the borehole

Dmitriyev A.N. , Budovskaya M.E.

For citation: Dmitriev A.N., Budovskaya M.E. Dynamics of the lake water temperature regime at the bottom of the borehole. Vestnik Mezhdunarodnoi akademii kholoda. 2018. No 2. p. 28-33

Abstract
A solution of the temperature regime near the borehole surface - a subglacial lake - where the temperature of the ice is close to the melting point, is proposed and analyzed. The object of the research is the technology of drilling and operation of a 5G deep borehole drilled in the ice sheet at Vostok Russian Research Station in Antarctica. The aim of the work is to create an ecologically safe and competitive technology of maintaining the output of 5G borehole into Lake Vostok in working condition during the process of its investigation. The task of this work is the prediction of the temperature regime dynamics for the lake water rising into the borehole. it is a good practice to solve the problem by transferring heat from the electric heater scattered over the height to the walls of the borehole for their thawing when the values of the temperature difference between the borehole wall and the lake water are small. Understanding the nature of the heat capacity changes, heat and thermal conductivity as a function of temperature is necessary for calculating the parameters of all the thermodynamic processes taking place in the ice massif.In future drilling of boreholes in glaciers and subglacial rocks will be of importance for geological exploration and for exploration of mineral deposits hidden by great ice sheet of Antarctic.

Keywords: Antarctica, deep drilling, ice sheet, ice core, borehole, unsealing, lake water, heat transfer, subglacial Lake Vostok.

All references

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