Thermodynamic Properties of Soft Sedimentary Rock in Geotechnical Engineering

Abstract:

In geotechnical engineering such as supporting of deep and soft rock roadway ,oil drilling , and construction of military underground defensive facility, thermodynamic properties of soft sedimentary rock has guiding significances .The study of the thermal constitutive behavior of rock under temperature has been done for many years, and many achievement have been got on this issue. In this paper, some experimental researches on the thermo-mechanical characteristics of soft sedimentary rock have been presented. Some test results have been simulated with a thermo-elasto-viscoplastic model. The results show that the proposed thermo-elasto-viscoplastic model reflects the visco-elastoplastic properties of rock，and can describe the thermo-mechanical behaviors of soft shale rocks in not only drained conventional triaxial compression tests but also drained triaxial creep tests. So it can be used for analysis of theology and stability of rock engineering.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 687-691
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.687
• Online since: May 2012
• Authors: Jing Yin Wang, Fang Liu
• Keywords: Creep Test, Rock Properties Test, Soft Rock

References

[1] International Atomic Energy Agency. The use of scientific and technical results from underground research laboratory investigations for the geological disposal of radioactive waste. Vienna: International Atomic Energy Agency, 2001.

[2] U.S. Department of Energy, Office of Civilian Radioactive Waste Management. Yucca mountain science and engineering report: technical information supporting site recommendation consideration. Washington D.C.: U.S. Department of Energy, Office of Civilian Radioactive Waste Management, 2002.

DOI: 10.2172/130629

[3] Hueckel T, Baldi G. Termoplastic behavior of saturated clays: an experimental constitutive study. Journal of Geotechnical Engineering, 1990, 116 (12): 1 778–1 796.

DOI: 10.1061/(asce)0733-9410(1990)116:12(1778)

[4] Hueckel T, Pellecgini R. Thermo-plastic modeling of undrained failure of saturated clay due to heating. Soils and Foundations, 1991, 31 (3): 1–16.

DOI: 10.3208/sandf1972.31.3_1

[5] Hueckel T, Pellecgini R. Effective stress and water pressure in saturated clays during heating-cooling cycles. Canadian Geotechnical Journal, 1992, 29 (6): 1 095–1 102.

DOI: 10.1139/t92-126

[6] Kato Y, Tani K, Okada T. Unconfined creep test of soft shales at high temperature and proposal of prediction model for creep behavior. In: Proceedings of the 33rd Symposium on Rock Mechanics. [S.l.]: [s.n.], 2004: 25–32 (in Japanese).

[7] Okada T. Mechanical properties of sedimentary soft rock at high temperatures (part 1)—evaluation of temperature dependency based on triaxial compression test. Chiba, Japan: Central Research Institute of Electric Power Industry, 2005 (in Japanese).

[8] Okada T. Mechanical properties of sedimentary soft rock at high temperatures (part 2)—evaluation of temperature dependency of creep behavior based on unconfined compression test. Chiba, Japan: Central Research Institute of Electric Power Industry, 2006 (in Japanese).

[9] GAO Feng，XU Xiaoli. Modeling of thermo-viscoplastic behavior of soft rock and its application to boundary value problem. PhD Thesis. Nagoya, Japan: Nagoya Institute of Technology, 2010 (in Japanese).