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Construction and operation of underground gas storages in rock salt should take into account temperature action. Under the geothermal gradient of 3° per 100 m vertically, the temperature at a depth of 1500 m reaches 45 °. The problem of temperature effect on mechanical properties of rock salt is analyzed. It is found that currently, there is almost no information on the behavior of rock salt under increased temperature. The required investigation of temperature influence on the mechanical properties of salt rock mass intended for underground gas storage is justified. The testing equipment for rock salt under increased temperature is described. All tests were carried out on the special equipment model UDS 65/80 for the experimentation on rock salt exposed to variable increased temperatures. The test data on the temperature effect on the rate of rock salt deformation under increased temperature are analyzed. The research findings show that as the temperature is increased from 20 to 70 °, the rate of rock salt deformation grows 3–5 times.

: 1
ISBN: 0236-1493
: 622.03
DOI: 10.25018/0236-1493-2019-01-0-69-76
Authors: Kravcenko O. S., Filimonov Yu. L.

Authors' Information:
Kravcenko O.S., Graduate Student, e-mail: o.kravchenko.msu@inbox.ru,
Mining Institute, National University of Science and Technology MISiS,
119049, Moscow, Russia,
Filimonov Yu.L., Candidate of Technical Sciences,
LLC Gazprom geotechnology, Moscow, Russia.

Key words:
Rock salt, underground gas storage, deformation rate, increased temperature.


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