Abstract
As a special soft rock, rock salt can exhibit a large deformation under triaxial stress conditions. In this paper, the author presents triaxial compressive tests which were carried out under different confining pressures on rock salt samples taken from Anning natural gas storage cavern, located in Yunnan Province, China. The axial stress of rock salt was analyzed by four methods based on initial cross-sectional area, corrected cross-sectional area according to engineering strain, logarithmic strain and volume deformation. Results show that the peak stress and strain determined were different for each method. The peak stress and strain determined by the method of initial cross-sectional area were the largest, while those obtained by the method of corrected cross-sectional area according to logarithmic strain were the smallest. The maximum difference is 36.15%. Based on the results of this study, it is recommended that the logarithmic strain method be used to determine the axial peak stress and strain of rock salt in triaxial stress condition.
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References
Hunsche, U., Albrecht, H.: Results of true triaxial strength tests on rock salt. Engineering Fracture Mechanics 35(4/5), 867–877 (1990)
Hunsche, U.: A failure criterion for natural polycrystalline rock salt. In: Jinghong, F., Murakami, S. (eds.) Advances in Constitutive Laws for Engineering Materials, pp. 1043–1046. International Academic Publ. (1989)
Farmer, I.W., Gilbert, M.J.: Dependent strength reduction of rock salt. In: The First Conference on the Mechanical Behavior of Salt, pp. 4–18. Trans Tech Publications (1984)
Yang, C.H., Yin, J.H., Daemen, J.J.K.: The investigation on stress relaxation of rock salt. Chin. J. Rock Mech. Eng. 18(3), 262–265 (1999) (in Chinese)
Zhou, H.W., Wang, C.P., Ding, J.Y., Zhang, M.: Developments in researches on time-dependent behavior of salt rock and long-term stability of salt cavity. Mechanics in Engineering 33(5), 1–7 (2011) (in Chinese)
Zhou, H.W., Wang, C.P., Han, B.B., Duan, Z.Q.: A creep constitutive model for salt rock based on fractional derivatives. Int. J. Rock Mech. Min. Sci. 48(1), 116–121 (2011)
Xie, H.P., Liu, J.F., Ju, Y., Li, J., Xie, L.Z.: Fractal property of spatial distribution of acoustic emissions during the failure process of bedded rock salt. Int. J. Rock. Mech. Min. Sci., 1215–1382 (2011)
Liu, J.F., Xu, J., Yang, C.H., Hou, Z.M.: Mechanical characteristics of tensile failure of salt rock. Chinese Journal of Geotechnical Engineering 33(4), 580–586 (2011) (in Chinese)
Liu, J.F., Xu, J., Pei, J.L., Zhang, R.: Resarch on unloading modulus for salt rock damage testing. Journal of Sichuan University (Engineering Science Edition) 43(4), 57–62 (2011) (in Chinese)
Yang, C.H., Ma, H.L., Liu, J.F.: Study of deformation of rock salt under cycling loading and unloading. Rock and Soil Mechanics 30(12), 3562–3568 (2009) (in Chinese)
Li, Y.P., Liu, J., Yang, C.H.: Influence of mudstone interlayer on deformation and failure characteristic of salt rock. Chin. J. Rock Mech./Eng. 25(12), 2461–2466 (2006) (in Chinese)
Wu, W., Yang, C.H.: Experimental study on salt rock under compression and damage model simulation. Chin. J. Rock Mech. Eng. 25(2), 3709–3713 (2006) (in Chinese)
Liu, J., Yang, C.H., Wu, W., Li, Y.P.: Experiment study on short-term strength and deformation properties of rock salts. Chin. J. Rock Mech. Eng. 25(3), 103–104 (2006)
Zhou, H.W., Wang, C.P., Duan, Z.Q., Zhang, M., Liu, J.F.: Time-based fractional derivative approach to creep constitutive model of salt rock. Scientia Sinica (Physica, Mechanica & Astronomica) 42(3), 310–318 (2012) (in Chinese)
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Bian, Y. et al. (2013). Different Methods to Evaluate Strength from Compression Tests for Rock Salt. In: Hou, M., Xie, H., Were, P. (eds) Clean Energy Systems in the Subsurface: Production, Storage and Conversion. Springer Series in Geomechanics and Geoengineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-37849-2_23
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DOI: https://doi.org/10.1007/978-3-642-37849-2_23
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