TRIAXIAL COMPRESSION TESTING OF FROZEN SOILS FOR THE DETERMINATION OF RHEOLOGICAL PARAMETERS


https://doi.org/10.17073/2500-0632-2017-3-18-22

Полный текст:


Аннотация

Detailed investigation of mechanical, deformation and rheological properties of frozen soils is an actual issue, as they are basis of civil-engineering survey for underground constructions in  permafrost holding more than 50% of the territory of Russia. The majority of modern software  packages which calculate structures stability considering stress state of soils massive, demand  knowledge of mechanical and rheological parameters defined by triaxial compression tests. The  current article presents: estimation method of frozen soils rheological parameters by triaxial  compression testing; required equipment and the research results. The samples of frozen soil 10  – 50 m depth from Kharasavey gas field were used as test material. Mostly they are presented  by loam, clay and sand. The experiments were run at the range of temperature from −3 oC to  −6 oC. Triaxial compression testing was provided by the laboratory equipment which allows to  run experiments in the mode of automatic load, maintenance and deformation processes  registration. Test procedure of rheological parameters identification under conditions of long-term triaxial compression considered incremental load Stage duration was equal to 24 hours. The  experiments were run until th specimen’s failure. As a result of the testing, mechanical, deformation and rheological parameters for frozen soils are defined at temperatures −3 oC  −6  oC. The achieved results can be interpreted in different models (Mohr-Coulomb, Drucker-Prager,  Tresca etc.). The described experiments were carried out at LLC Gazprom Geotechnology for the  design of underground drill cutting s storages in permafrost.


Об авторах

V. A. AGEENKO
National University of Science and Technology “MISIS”
Россия
Address: Leninskiy prosp 4, Moscow, Russia, 119049


M. N. TAVOSTIN
National University of Science and Technology “MISIS”
Россия

Associate professor

Address: Leninskiy prosp 4, Moscow, Russia, 119049



I. S. VAKULENKO
National University of Science and Technology “MISIS”
Россия
Address: Leninskiy prosp 4, Moscow, Russia, 119049


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Дополнительные файлы

Для цитирования: AGEENKO V.A., TAVOSTIN M.N., VAKULENKO I.S. TRIAXIAL COMPRESSION TESTING OF FROZEN SOILS FOR THE DETERMINATION OF RHEOLOGICAL PARAMETERS. Горные науки и технологии. 2017;(3):18-24. https://doi.org/10.17073/2500-0632-2017-3-18-22

For citation: Ageenko V.A., Tavostin M.N., Vakulenko I.S. TRIAXIAL COMPRESSION TESTING OF FROZEN SOILS FOR THE DETERMINATION OF RHEOLOGICAL PARAMETERS. Mining science and technology. 2017;(3):18-24. https://doi.org/10.17073/2500-0632-2017-3-18-22

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