Abstract
Internal erosion is a complex phenomenon that is one of the main risk factors to soil destruction. Its occurrence is mainly due to water infiltration and can cause slope instability. “Karst soil” is a type of loess with special soil and water sensitivity that makes it prone to landsliding. The processes of internal erosion include transport erosion and chemical dissolution, which strongly effect loess structure and strength. To reveal the internal processes and effects of the loess due to water infiltration, field investigations and indoor tests, including infiltration tests, undrained triaxial tests, particle analysis, chemical analysis, and scanning electron microscopy (SEM), were conducted. The results show that (1) the fine particles (clay and silt) and chemicals can move within the matrix of the macro-pores under seepage flow. The physical internal erosion is mainly due to fine particle migration out of the water and clay and silt particles, and the sample column settlement was 3.3 cm with a settlement ratio of 16.5%, which results in changes to the soil skeleton, increasing the porosity and infiltration rate of loess. (2) Chemical dissolution is also an important internal erosion process in loess, especially cations of Na, Mg, Ca, and K and anions of Cl, SO4, and CO3, which are mainly lost due to dissolution and flow out of with water and clay particles, resulting in altered physical characteristics of the soil. (3) Soil particles’ mitigation and chemical dissolution change the loess structure, leading to skeletal destruction and decreased peak strength and residual strength of the infiltrated sample to 7.75% and 8.13%, respectively. During internal erosion, physical fine particle migration and chemical dissolution are important for loess stability and loess slope susceptible to failure during water infiltration.
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References
Bendahmane F, Marot D, Alexis A (2008) Experimental parametric study of suffusion and backward erosion. J Geotech Geoenviron Eng 134(1):57–67
Chang DS, Zhang LM (2013) Critical hydraulic gradients of internal erosion under complex stress states. J Geotech Geoenviron Eng 139(9):1454–1467
Chapuis RP (1992) Similarity of internal stability criteria for granular soils. Can Geotech J 29(4):711–713
Chen C, Zhang LM, Zhu H (2018) A photographic method for measuring soil deformations during internal erosion under triaxial stress condition. Geotech Test J 41(1):43–54
Crosta G, di Prisco C (1999) On slope instability induced by seepage erosion. Can Geotech J 36(6):1056–1073
Cui P (1992) Study on conditions and mechanisms of debris flow initiation by means of experiment. Chin Sci Bull 37(9):759–759
Cui Y, Jiang Y, Guo C (2019) Investigation of the initiation of shallow failure in widely graded loose soil slopes considering interstitial flow and surface runoff. Landslides 16(4):815–828
Denisov HR (1951) Mechanical properties of loess and loams. Gosstroiizdat, Moscou
Derbyshire E, Dijkstra TA, Smalley IJ, Li Y (1994) Failure mechanisms in loess and the effects of moisture content changes on remoulded strength. Quat Int 24:5–15
Derbyshire E, Meng XM, Dijkstra TA (2000) Landslides in the thick loess terrain of North-West China. John Wiley & Sons Ltd, London
Di Maio C, Scaringi G (2016) Shear displacements of a clay in the residual condition induced by decrease in pore solution concentration. Eng Geol 200:1–9
Dijkstra TA, Rogers CDF, van Asch TWJ (1995) Cut slope and terrace edge failures in Malan loess, Lanzhou, PR China. In: Proceedings of the XI ECSMFE conference, Copenhagen, Denmark, pp 61–67
Doan NC, Nadia B, Pierre P, Victoria DGE (2017) Experimental study of erosion by suffusion at the micro-macro scale. EPJ Web Conf 140:09024
Fan XM, Xu Q, Scaringi G, Li S, Peng DL (2017) A chemo-mechanical insight into the failure mechanism of frequently occurred landslides in the Loess Plateau, Gansu Province, China. Eng Geol 228(13):337–345
Foster MA, Fell R (2001) Assessing embankment dam filters that do not satisfy design criteria. J Geotech Environ Eng ASCE 127(5):398–407
Guo C, Cui Y (2020) Pore structure characteristics of debris flow source material in the Wenchuan earthquake area. Eng Geol 267:105499
Guo P, Meng X, Li Y, Chen G, Zeng R, Qiao L (2015) Effect of large dams and irrigation in the upper reaches of the Yellow River of China, and the geohazards burden. Proc Geol Assoc 126(3):367–376
Hicher PY (2013) Modelling the impact of particle removal on granular material behaviour. Ge′otechnique 63(2):118–128
Hu W, Zhu L, Zhang M, Pei Y, Bi J (2014) Analyses of the changes of loess engineering properties induced by irrigation. In: Sassa K, Canuti P, Yin Y (eds) Landslide science for a safer geoenvironment. Springer, Cham
Ke L, Takahashi A (2012) Strength reduction of cohesionless soil due to internal erosion induced by one-dimensional upward seepage flow. Soils Found 52(4):698–711
Ke L, Takahashi A (2014) Triaxial erosion test for evaluation of mechanical consequences of internal erosion. Geotech Test J 37(2):347–364
Kenney TC, Lau D (1985) Internal stability of granular filters. Can Geotech J 22(2):215–225
Kovacs G (1981) Seepage hydraulics. Elsevier Scientific, Publishing Company, Amsterdam, Netherlands
Lei XQ, Yang ZJ, He S, Liu E, Wong H, Li XP (2017) Numerical investigation of rainfall induced fines migration and its influences on slope stability. Acta Geotech 12:1431–1446
Li TL, Wang CY, Li P (2013) Loess deposit and loess landslides on the Chinese Loess Plateau. In: Wang FW, Miyajima M, Li TL,Shan W, Fathani TF (eds) Progress of Geo-Disaster Mitigation Technology in Asia. Springer, Berlin, Heidelberg, pp 235-261
Liu TS (1985) Loess and the environment. Science Press, Beijing
Liu C, Shi B, Zhou J, Tang CS (2011) Quantification and characterization of microporosity by image processing, geometric measurement and statistical methods: application on SEM images of clay materials. Appl Clay Sci 54(1):97–106
Lu XB, Cui P, Hu KH, Zhang XH (2010) Initiation and development of water film by seepage. J Mt Sci 7:361–366
Mao CX (2005) Study on piping and filters: part 1 of piping. Rock Soil Mech 26(2):209–215
McDougall J, Da K, Barreto D (2013) Particle loss and volume change on dissolution: experimental results and analysis of particle size and amount effects. Acta Geotech 8:619–627
Moffat RA, Fannin RJ (2006) A large permeameter for study of internal stability in cohesionless soils. Geotech Test J 29(4):273–279
Moffat R, Fannin RJ (2011) A hydromechanical relation governing internal stability of cohesionless soil. Can Geotech J 48:413–424
Moffat R, Fannin RJ, Garner SJ (2011) Spatial and temporal progression of internal erosion in cohesionless soil. Can Geotech J 48(3):399–412
Mohsen H, Narges K, Giandiego C, Alireza J, Mohammad A (2018) Spatial point pattern analysis of piping erosion in loess-derived soils in Golestan Province, Iran. Geoderma 328:20–29
Peng JB, Lin HC, Wang QY, Zhuang JQ, Cheng YX, Zhu XH (2014) The critical issues and creative concepts in mitigation research of loess geological hazards. J Eng Geol 22(4):684–691
Peng J B, Zhuang J Q, Wang G H, Dai F C, Zhang F Y, Huang W L, Xu Q (2018a) Liquefaction of loess landslides as a consequence of irrigation. Quarterly Journal of Engineering Geology and Hydrogeology 51:330–337
Peng JB, Sun P, Igwe O, Li X (2018b) Loess caves, a special kind of geo-hazard on Loess Plateau, northwestern China. Eng Geol 236:79–88
Peng DL, Xu Q, Zhang XL, Xing HL, Zhuang S, Kang K, Qi X, Ju YZ, Zhao KY (2019) Hydrological response of loess slopes with reference to widespread landslide events in the Heifangtai terrace, NW China. J Asian Earth Sci 171:259–276
Pontolillo DM, De Rosa J, Scaringi G, Di Maio C (2016) Clay creep and displacements: influence of pore fluid composition. VI Italian conference of researchers in geotechnical engineering, CNRIG, Bologna (Italy). Procedia Eng 158:69–74
Richards KS, Reddy KR (2007) Critical appraisal of piping phenomena in earth dams. Bull Eng Geol Environ 66:381–402
Richards KS, Reddy KR (2012) Experimental investigation of initiation of backward erosion piping in soils. Ge′otechnique 62(10):933–942
Sato M, Kuwano R (2015) Suffusion and clogging by one-dimensional seepage tests on cohesive soil. Soils Found 55(6):1427–1440
Scholte’s L, Hicher PY, Sibille L (2010) Multiscale approaches to describe mechanical responses induced by particle removal in granular materials. C R Mecanique 338(10):627–638
Shi XG, Xu Q, Zhang L, Zhao KY, Dong J, Jiang HJ, Liao MS (2019) Surface displacements of the Heifangtai terrace in Northwest China measured by X and C-band InSAR observations. Eng Geol 259:105181
Skempton AW, Brogan JM (1994) Experiments on piping in sandy gravels. Geotechnique 44(3):449–460
Sun P, Zhang M, Zhu L, Zue Q, Hu W (2014) Discussion on assessment in the collapse of loess: a case study of the Heifangtai Terrace, Gansu, China. In: Sassa K, Canuti P, Yin Y (eds) Landslide science for a safer Geoenvironment. Springer, Cham, pp 195–199
Vallejo LE (2001) Interpretation of the limits in shear strength in binary granular mixtures. Can Geotech J 38:1097–1104
Verachtert E, Eeckhaut M V D, Poesen J, Deckers J (2009) Characteristics and distribution of soil piping erosion in loess-derived soils of Belgium. In: Díaz MAR, Serrato FB, Sarria FA, Bermúdez FL (eds) Advances in studies on desertification. Universidad de Murcia, Spain, Murcia, pp 435–438
Wan CF, Fell R (2004) Investigation of rate erosion of soils in embankment dams. J Geotech Geoenviron Eng 130(4):373–380
Wan CF, Fell R (2008) Assessing the potential of internal instability and suffusion in embankment dams and their foundations. J Geotech Geoenviron Eng 134(3):401–407
Wang Z, Li L, Wang R, Hu M (2016) Impact of fine particle content on mode and scale of slope instability of debris flow. Adv Sci Technol Water Res 36(2):35–41 (In Chinese)
Wang L, Li XA, Li LC, Hong B, Liu J (2019) Experimental study on the physical modeling of loess tunnel-erosion rate. Bull Eng Geol Environ 78:5827–5840
Wen BP, He L (2012) Influence of lixiviation by irrigation water on residual shear strength of weathered red mudstone in Northwest China: implication for its role in landslides' reactivation. Eng Geol 151:56–63
Xu ZJ, Lin ZG, Zhang MS (2007) Loess in China and loess landslides. Chin J Rock Mech Eng 26(7):1297–1312
Xu L, Dai FC, Tu XB, Tham LG, Zhou Y, Iqbal J (2014) Landslides in a loess platform, North-West China. Landslides 11(6):993–1005
Yang B, Yang T, Xu Z, Liu H, Yang X, Shi W (2018) Impact of particle-size distribution on flow properties of a packed column. J Hydrol Eng 24(3):04018070
Zhang FY, Wang GH (2018) Effect of irrigation-induced densification on the post-failure behavior of loess flowslides occurring on the Heifangtai area, Gansu, China. Eng Geol 236(11):111–118
Zhang FY, Wang GH, Kamai T, Chen WW, Zhang DX, Yang J (2013) Undrained shear behavior of saturated loess at different concentrations of sodium chloride solution. Eng Geol 155:69–79
Zhang FY, Wang GH, Kamai T, Chen WW (2014) Effect of pore-water chemistry on undrained shear behaviour of saturated loess. Q J Eng Geol Hydrogeol 47:201–210
Zhang MS, Zhu LF, Hu W (2017) The geo-environmental change and geohazards induced by irrigation-take Heifangtai tableland as example. Science Press, Beijing
Zhou ZQ, Ranjith PG, Li SC (2018) An experimental testing apparatus for study of suffusion of granular soils in geological structures. Tunn Undergr Space Technol 78:222–230
Zhuang JQ, Peng JB (2014) A coupled slope cutting-a prolonged rainfall-induced loess landslide: a 17 October 2011 case study. Bull Eng Geol Environ 73(4):997–1011
Zhuang JQ, Peng JB, Iqbal J, Liu TM, Liu NN, Li YZ, Ma PH (2015a) Identification of landslide spatial distribution and susceptibility assessment in relation to topography in the Xi'an region, Shaanxi province, China. Front Earth Sci 9(3):449–462
Zhuang JQ, Cui P, Hu KH, Chen XQ (2015b) Fine particle size moving and it’s effective on debris flow initiation. J Mt Res 33(6):713–720
Zhuang JQ, Peng JB, Zhu XH, Li W, Ma PH, Liu TM (2016) Spatial distribution and susceptibility zoning of geohazards along the silk road, Xi'an-Lanzhou. Environmental Earth Sciences 75(8):1–11
Zhuang JQ, Peng JB, Wang GH, Iqbal J, Wang Y, Li W (2017) Prediction of rainfall-induced shallow landslides in the Loess Plateau, Yan’an, China, using the TRIGRS model. Earth Surf Process Landf 42(6):915–927
Zhuang JQ, Peng JQ, Wang GH, Javed I, Wang Y, Li W (2018) Distribution and characteristics of landslide in Loess Plateau: a case study in Shaanxi province. Eng Geol 236:89–96
Acknowledgments
The authors are very grateful to the anonymous reviewers and editors for their thoughtful review comments and suggestions which have significantly improved this paper.
Funding
This study was financially supported by the National Natural Science Foundation of China (41922054, 41790444, 41941019) and the Fundamental Research Funds for the Central Universities (CHD 300102260302).
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Zhuang, J., Peng, J., Zhu, Y. et al. The internal erosion process and effects of undisturbed loess due to water infiltration. Landslides 18, 629–638 (2021). https://doi.org/10.1007/s10346-020-01518-z
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DOI: https://doi.org/10.1007/s10346-020-01518-z