Volume 11 Issue 2
Apr.  2018
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Article Contents
Chong Ma, Hong-bin Zhan, Wen-min Yao, Hua-zhou Li. 2018: A new shear rheological model for a soft interlayer with varying water content. Water Science and Engineering, 11(2): 131-138. doi: 10.1016/j.wse.2018.07.003
Citation: Chong Ma, Hong-bin Zhan, Wen-min Yao, Hua-zhou Li. 2018: A new shear rheological model for a soft interlayer with varying water content. Water Science and Engineering, 11(2): 131-138. doi: 10.1016/j.wse.2018.07.003

A new shear rheological model for a soft interlayer with varying water content

doi: 10.1016/j.wse.2018.07.003
Funds:  This work was supported by the National Natural Science Foundation of China (Grants No. 41521001) and the Natural Science Foundation of Hubei Province (Grant No. 2018CFB385).
More Information
  • Corresponding author: Hong-bin Zhan
  • Received Date: 2017-05-02
  • Rev Recd Date: 2018-01-13
  • The rheological behavior of a soft interlayer is critical to understanding slope stability, which is closely related to the water content of the soft interlayer. This study used the soft interlayer of the Permian Maokou Formation in Southwest China as an example to perform ring shear creep tests with different water content amounts. The effect of water content on the creep properties of the soft interlayer was analyzed, and a new shear rheological model was established. This research produced several findings. First, the ring shear creep deformation of the soft interlayer samples varied with the water content and the maximum instantaneous shear strain increment occurred near the saturated water content. As the water content increased, the cumulative creep increment of the samples increased. Second, the water content significantly affected the long-term strength of the soft interlayer, which decreased with the increase of water content, exhibiting a negative linear correlation. Third, a constitutive equation for the new rheological model was derived, and through fitting of the ring shear creep test data, the validity and applicability of the constitutive equation were proven. This study has developed an important foundation for studying the long-term deformation characteristics of a soft interlayer with varying different water content.

     

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  • Bhat, D.R., Bhandari, N.P., Yatabe, R., 2013. Pre-peak and post-peak creep test using torsional ring shear machine. Japan Shikoku Chapter Conference on Japan Society of Civil Engineers (JSCE), Japan, III-374, 747–748.
    Brantut, N., Heap, M.J., Baud, P., Meredith, P.G., 2014. Mechanisms of time-dependent deformation in porous limestone. Journal of Geophysical Research: Solid Earth, 119(7), 5444–5463. https://doi.org/10.1002/2014JB011186.
    de Meer, S., Spiers, C.J., 1995. Creep of wet gypsum aggregates under hydrostatic loading conditions. Tectonophysics, 245(3), 171–183. https://doi.org/10.1016/0040-1951(94)00233-y.
    Fujii, Y., Kiyama, T., Ishijima, Y., Kodama, J., 1999. Circumferential strain behavior during creep tests of brittle rocks. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 36(3), 323–337. https://doi.org/10.1016/s0148-9062(99)00024-8.
    Huang, M., 2010. Study on the Creep Properties of Water-bearing Siltite and Its Application in Soft Rock Tunnel Engineering. Ph. D. Dissertation. Chongqing University, Chongqing (in Chinese).
    Lai, X.L., Wang, S.M., Ye, W.M., Cui, Y.J., 2014. Experimental investigation on the creep behavior of an unsaturated clay. Canadian Geotechnical Journal, 51(6), 621–628. https://doi.org/10.1139/cgj-2013-0064.
    Liu, L., Wang, G.M., Chen, J.H., Yang, S., 2013. Creep experiment and rheological model of deep saturated rock. Transactions of Nonferrous Metals Society of China, 23(2), 478–483. https://doi.org/10.1016/S1003-6326(13)62488-7.
    Lockner, D., 1993. Room temperature creep in saturated granite. Journal of Geophysical Research: Solid Earth, 98(B1), 475–487. https://doi.org/10.1029/92JB01828.
    Ma, C., Hu, B., Zhan, H.B., 2016. Triaxial rheological mechanism and creep model of mudstone under complex stress. Electronic Journal of Geotechnical Engineering, 21(6), 2127–2142.
    Ngwenya, B.T., Main, I.G., Elphick, S.C., Crawford, B.R., Smart, B.G.D., 2001. A constitutive law for low-temperature creep of water-saturated sandstones. Journal of Geophysical Research, 106(B10), 21811–21826. https://doi.org/10.1029/2001JB000403.
    Okubo, S., Fukui, K., Gao, X., 2008. Rheological behavior and model for porous rocks under air-dried and water-saturated conditions. The Open Civil Engineering Journal, 2(1), 88–98. https://doi.org/10.2174/1874149500802010088.
    Pellet, F.L., Keshavarz, M., Boulon, M., 2013. Influence of humidity conditions on shear strength of clay rock discontinuities. Engineering Geology, 157, 33–38. https://doi.org/10.1016/j.enggeo.2013.02.002.
    Sun, J., 1999. Rheological Behavior of Geomaterials and Its Engineering Applications. China Architecture and Building Press, Beijing (in Chinese).
    Wang, X.G., 2014. Study on the Rheological Mechanism and Engineering Application of Rocks of High Reservoir Bank Slope under the Deterioration Effect of Water Saturation-Dehydration Circulation. Ph. D. Dissertation. China University of Geosciences, Wuhan (in Chinese).
    Xia, C.C., Wang, X.D., Xu, C.B., Zhang, C.S., 2008. Method to identify rheological models by unified rheological model theory and case study. Chinese Journal of Rock Mechanics and Engineering, 27(8), 1594–1600. https://doi.org/10.3321/j.issn:1000-6915.2008.08.008 (in Chinese).
    Xu, W.Y., Yang, S.Q., Xie, S.Y., Shao, J.F, Wang, Y.F., 2005. Investigation on triaxial rheological mechanical properties of greenschist specimen (II): Model analysis. Rock and Soil Mechanics, 26(5), 693–698. https://doi.org/10.16285/j.rsm.2005.05.004 (in Chinese).
    Yang, C.H., Wang, Y.Y, Li, J.G., Gao, F., 2007. Testing study about the effect of different water content on rock creep law. Journal of China Coal Society, 32(7), 695–699. https://doi.org/10.3321/j.issn:0253-9993.2007.07.005 (in Chinese).
    Zhou, H.W., Wang, C.P., Han, B.B, Duan, Z.Q., 2011. A creep constitutive model for salt rock based on fractional derivatives. International Journal of Rock Mechanics & Mining Sciences, 48(1), 116–121. https://doi.org/10.1016/j.ijrmms.2010.11.004.
    Zhu, H.H., Ye, B., 2002. Experimental study on mechanical properties of rock creep in saturation. Chinese Journal of Rock Mechanics and Engineering, 21(12), 1791–1796. https://doi.org/10.3321/j.issn:1000-6915.2002.12.009 (in Chinese).
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