Experimental Study of Internal Erosion in Granular Soil Subject to Cyclic Hydraulic Gradient Reversal
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 148, Issue 5
Abstract
Numerous studies have been conducted to evaluate the influence of internal erosion on the geotechnical properties of soil under unidirectional seepage. Yet cyclic gradients prevail in natural or engineering systems, and the mechanical consequences of soil subjected to cyclic hydraulic gradient reversal have not been addressed in the literature. This paper reported the first batch of internal erosion tests on a modified stress-controlled triaxial apparatus that allows alteration of seepage direction and hydraulic gradient reversals. Three different schemes of hydraulic gradient application, namely monotonic stepwise loading, cyclic reversal after monotonic loading, and direct cyclic loading, were adopted. In each test, the cumulative particle loss, deformation, hydraulic conductivity, and posterosion shearing behavior were evaluated. It was found that the cyclically reversed hydraulic gradient resulted in more severe erosion at the same level of mean hydraulic gradient. Microscopic analysis was also conducted to investigate the mechanism of internal erosion under cyclic hydraulic gradient reversal, in which mitigation of clogging within the soil matrix was observed and found to facilitate the progression of internal erosion.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was substantially supported by the National Key R&D Program of China (2018YFC1508601), the National Natural Science Foundation of China (Grant No. 51909181), and the Research Grants Council of the Hong Kong SAR (Grant No. 16205118).
References
Bendahmane, F., D. Marot, and A. Alexis. 2008. “Experimental parametric study of suffusion and backward erosion.” J. Geotech. Geoenvir. Eng. 134 (4): 57–67. https://doi.org/10.1061/(ASCE)1090-0241(2008)134:1(57).
Black, D. K., and K. L. Lee. 1973. “Saturating laboratory samples by back pressure.” J. Soil Mech. Found. Div. 99 (1): 75–93. https://doi.org/10.1061/JSFEAQ.0001847.
Chang, D. S., and L. M. Zhang. 2011. “A stress-controlled erosion apparatus for studying internal erosion in soils.” Geotech. Testing J. 34 (6): 579–589. https://doi.org/10.1520/GTJ103889.
Chang, D. S., and L. M. Zhang. 2013a. “Extended internal stability criteria for soils under seepage.” Soils Found. 53 (4): 569–583. https://doi.org/10.1016/j.sandf.2013.06.008.
Chang, D. S., and L. M. Zhang. 2013b. “Critical hydraulic gradients of internal erosion under complex stress states.” J. Geotech. Geoenvir. Eng. 139 (9): 1454–1467. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000871.
Chen, C., and L. Zhang. 2021. “Hydro-mechanical behaviour of soil experiencing seepage erosion under cyclic hydraulic gradient.” Géotechnique 2021 (Sep): 1–13. https://doi.org/10.1680/jgeot.20.P.340.
Chen, C., L. M. Zhang, and D. S. Chang. 2016. “Stress-strain behaviour of granular soils subjected to internal erosion.” J. Geotech. Geoenvir. Eng. 142 (12): 06016014. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001561.
Chen, C., L. M. Zhang, L. Pei, and Z. Y. Wu. 2020. “Soil deformations induced by particle removal under complex stress states.” J. Geotech. Geoenvir. Eng 146 (9): 04020085. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002342.
Chen, C., L. M. Zhang, and H. Zhu. 2017. “A photographic method for measuring soil deformations during internal erosion under triaxial stress conditions.” Geotech. Testing J. 41 (1): 20170031. https://doi.org/10.1520/GTJ20170031.
Dudley-Southern, M., and A. Binley. 2015. “Temporal responses of groundwater-surface water exchange to successive storm events.” Water Resour. Res. 51 (2): 1112–1126. https://doi.org/10.1002/2014WR016623.
Dunka, J., and L. M. Zhang. 2015. “Dike failure mechanisms and breaching parameters.” J. Geotech. Geoenviron. Eng. 141 (9): 04015039. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001335.
Fannin, R. J., and R. Moffat. 2006. “Observations on internal stability of cohesionless soils.” Géotechnique 56 (7): 497–500. https://doi.org/10.1680/geot.2006.56.7.497.
Foster, M., R. Fell, and M. Spannagle. 2000. “The statistics of embankment dam failures and accidents.” Can. Geotech. J. 37 (5): 1000–1024. https://doi.org/10.1139/t00-030.
Haghighi, I., C. Chevalier, M. Duc, S. Guédon, and P. Reiffsteck. 2013. “Improvement of hole erosion test and results on reference soils.” J. Geotech. Geoenvir. Eng. 139 (2): 330–339. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000747.
Head, K. H. 1994. Manual of soil laboratory testing. 2nd ed. London: Pentech.
Heuperman, A. 1999. “Hydraulic gradient reversal by trees in shallow water table areas and repercussions for the sustainability of tree-growing systems.” Agric. Water Manage. 39 (2–3): 153–167. https://doi.org/10.1016/S0378-3774(98)00076-6.
Ke, L., and A. Takahashi. 2012. “Influence of internal erosion on deformation and strength of gap-graded non-cohesive soil.” In Proc., 6th Int. Conf. on Scour and Erosion, 847–854. Boca Raton, FL: CRC Press.
Ke, L., and A. Takahashi. 2014. “Experimental investigations on suffusion characteristics and its mechanical consequences on saturated cohesionless soil.” Soils Found. 54 (4): 713–730. https://doi.org/10.1016/j.sandf.2014.06.024.
Ke, L., and A. Takahashi. 2015. “Drained monotonic responses of suffusional cohesionless soils.” J. Geotech. Geoenvir. Eng. 141 (8): 04015033. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001327.
Kenney, T. C., and D. Lau. 1985. “Internal stability of granular filters.” Can. Geotech. J. 22 (2): 215–225. https://doi.org/10.1139/t85-029.
Ladd, R. S. 1978. “Preparing test specimens using undercompaction.” Geotech. Testing J. 1 (1): 16–23. https://doi.org/10.1520/GTJ10364J.
Wan, C. F., and R. Fell. 2004. “Laboratory tests on the rate of piping erosion of soils in embankment dams.” Geotech. Testing J. 27 (3): 295–303. https://doi.org/10.1520/GTJ11903.
Xiao, M., and N. Shwiyhat. 2012. “Experimental investigation of the effects of suffusion on physical and geomechanic characteristics of sandy soils.” Geotech. Testing J. 35 (6): 890–900. https://doi.org/10.1520/GTJ104594.
Xu, Y., and L. M. Zhang. 2009. “Breaching parameters of earth and rockfill dams.” J. Geotech. Geoenvir. Eng. 135 (12): 1957–1970. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000162.
Zhang, L. M., M. Peng, D. S. Chang, and Y. Xu. 2016. Dam failure mechanisms and risk assessment. Berlin: Wiley.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 148 • Issue 5 • May 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 14, 2021
Accepted: Jan 6, 2022
Published online: Feb 22, 2022
Published in print: May 1, 2022
Discussion open until: Jul 22, 2022
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