Abstract
Soil-rock mixture is a widely distributed geological material in mountainous regions, where slope stability is an important issue. To investigate the influence of rock on slope stability, firstly, rocks in SRM are generated and then SRM slope models are simulated based on the finite difference method (FDM). The impact of various characteristics of rocks on slope factor of safety (FOS) is studied systematically by using the reduced strength method. The characteristic of rock considered include rock content, number of rock edges, aspect ratio, rock size and inclination of rock. The simulations indicate that increasing the rock content can prevent the development of high strain region and improve slope stability. However, the aspect ratio of rock has negligible impact on the mean value of FOS. For slopes with 45° slope angle, rocks with 45° angle of inclination result in smooth potential sliding surface, whereas rocks with 135° angle of inclination lead to more tortuous potential sliding surfaces. Statistical indices are utilized to analyze the results of numerical modelling.
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References
Afifipour M, Moarefvand P (2014a) Failure patterns of geomaterials with block-in-matrix texture: Experimental and numerical evaluation. Arabian Journal of Geosciences 7(7):2781–2792, DOI: https://doi.org/10.1007/s12517-013-0907-4
Afifipour M, Moarefvand P (2014b) Mechanical behavior of bimrocks having high rock block proportion. International Journal of Rock Mechanics and Mining Sciences 65:40–48, DOI: https://doi.org/10.1016/j.ijrmms.2013.11.008
Cen DF, Huang D, Ren F (2017) Shear deformation and strength of the interphase between the soil-rock mixture and the benched bedrock slope surface. Acta Geotechnica 12(2):391–413, DOI: https://doi.org/10.1007/s11440-016-0468-2
Coli N, Berry P, Boldini D, Bruno R (2012) The contribution of geostatistics to the characterisation of some bimrock properties. Engineering Geology 137:53–63, DOI: https://doi.org/10.1016/j.enggeo.2012.03.015
Gao WW, Gao W, Hu RL, Xu PF, Xia JG (2018) Microtremor survey and stability analysis of a soil-rock mixture landslide: A case study in Baidian town, China. Landslides 15(10):1951–1961, DOI: https://doi.org/10.1007/s10346-018-1009-x
Haneberg WC (2004) Simulation of 3D block populations to characterize outcrop sampling bias in bimrocks. Journal 22:19–26
Kalender A, Sonmez H, Medley E, Tunusluoglu C, Kasapoglu KE (2014) An approach to predicting the overall strengths of unwelded bimrocks and bimsoils. Engineering Geology 183:65–79, DOI: https://doi.org/10.1016/j.enggeo.2014.10.007
Khorasani E, Amini M, Hossaini MF, Medley E (2019a) Evaluating the effects of the inclinations of rock blocks on the stability of bimrock slopes. Geomechanics and Engineering 17(3):281–287, DOI: https://doi.org/10.12989/gae.2019.17.3.279
Khorasani E, Amini M, Hossaini MF, Medley E (2019b) Statistical analysis of bimslope stability using physical and numerical models. Engineering Geology 10:465–477, DOI: https://doi.org/10.1016/j.enggeo.2019.03.023
Li HJ, Dai FC, Li WC, Xu L, Min H (2011) Stability assessment of a slope under a transformer substation using numerical modelling. Bulletin of Engineering Geology and the Environment 70(3):385–394, DOI: https://doi.org/10.1007/s10064-010-0318-7
Li XC, Liao QL, He JM (2004) In-situ tests and a stochastic structural model of rock and soil aggregate in the Three Gorges reservoir area, China. International Journal of Rock Mechanics and Mining Sciences 41:702–707, DOI: https://doi.org/10.1016/j.ijrmms.2004.03.122
Lindquist ES, Goodman RE (1994) Strength and deformation properties of a physical model melange. 1st North American rock mechanics symposium, June 1–3, Austin, TX, USA
Lu Y, Tan Y, Li X (2018) Stability analyses on slopes of clay-rock mixtures using discrete element method. Engineering Geology 244:116–124, DOI: https://doi.org/10.1016/j.enggeo.2018.07.021
Lu Y, Tan Y, Li X, Liu CA (2017) Methodology for simulation of irregularly shaped gravel grains and its application to dem modeling. Journal of Computing in Civil Engineering 31(5), DOI: https://doi.org/10.1061/(asce)cp.1943-5487.0000676
Medley E (2007) Bimrocks-part 1: Introduction. Newsletter of the Hellenic Society of Soil Mechanics and Geotechnical Engineering 7:17–21
Medley E, Lindquist ES (1995) The engineering significance of the scale-Independence of some Franciscan melanges in California, USA. The 35th US Symposium on Rock Mechanics (USRMS), June 5–7, Reno, NE, USA
Medley EW, Zekkos D (2011) Geopractitioner approaches to working with antisocial mélanges. Geological Society of America Special Papers 480:261–277, DOI: https://doi.org/10.1130/2011.2480(13)
Meng QX, Wang HL, Xu WY, Cai M (2018a) A numerical homogenization study of the elastic property of a soil-rock mixture using random mesostructure generation. Computers and Geotechnics 98:48–57, DOI: https://doi.org/10.1016/j.compgeo.2018.01.015
Meng QX, Wang HL, Xu WY, Cai M, Xu JR, Zhang Q (2019) Multiscale strength reduction method for heterogeneous slope using hierarchical FEM/DEM modeling. Computers and Geotechnics 115:103164, DOI: https://doi.org/10.1016/j.compgeo.2019.103164
Meng QX, Wang HL, Xu WY, Zhang Q (2018b) A coupling method incorporating digital image processing and discrete element method for modeling of geomaterials. Engineering Computations 35(1):411–431, DOI: https://doi.org/10.1108/EC-11-2016-0390
Minuto D, Morandi L (2015) Geotechnical characterization and slope stability of a relict landslide in bimsoils (blocks in matrix soils) in dowtown Genoa, Italy. Engineering Geology for Society and Territory 2:1083–1088, DOI: https://doi.org/10.1007/978-3-319-09057-3_192
Napoli ML, Barbero M, Ravera E, Scavia C (2018) A stochastic approach to slope stability analysis in bimrocks. International Journal of Rock Mechanics & Mining Sciences 101:41–49, DOI: https://doi.org/10.1016/j.ijrmms.2017.11.009
Rabczuk T, Belytschko T (2007) A three-dimensional large deformation meshfree method for arbitrary evolving cracks. Computer Methods in Applied Mechanics and Engineering 196(29):2777–2799, DOI: https://doi.org/10.1016/j.cma.2006.06.020
Rabczuk T, Zi G, Bordas S, Nguyenxuan H (2010) A simple and robust three-dimensional cracking-particle method without enrichment. Computer Methods in Applied Mechanics and Engineering 199(37): 2437–2455, DOI: https://doi.org/10.1016/j.cma.2010.03.031
Ren HL, Zhuang XY, Rabczuk T (2017) Dual-horizon peridynamics: A stable solution to varying horizons. Computer Methods in Applied Mechanics and Engineering 318:762–782, DOI: https://doi.org/10.1016/j.cma.2016.12.031
Sonmez H, Ercanoglu M, Kalender A, Dagdelenler G, Tunusluoglu C (2016) Predicting uniaxial compressive strength and deformation modulus of volcanic bimrock considering engineering dimension. International Journal of Rock Mechanics and Mining Sciences 86(86):91–103, DOI: https://doi.org/10.1016/j.ijrmms.2016.03.022
Tsesarsky M, Hazan M, Gal E (2016) Estimating the elastic moduli and isotropy of block in matrix (bim) rocks by computational homogenization. Engineering Geology 200:58–65, DOI: https://doi.org/10.1016/j.enggeo.2015.12.003
Wang SN, Shi C, Xu WY, Wang HL, Zhu QZ (2014) Numerical direct shear tests for outwash deposits with random structure and composition. Granular Matter 16(5):771–783, DOI: https://doi.org/10.1007/s10035-014-0504-6
Xu WJ (2008) Study on meso-structural mechanics (M-SM) characteristics and stability of slope of soil-rock mixtures (S-RM). Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, China
Zhang Q, Xu WY, Liu QY, Shen JL, Yan L (2017) Numerical investigations on mechanical characteristics and failure mechanism of outwash deposits based on random meso-structures using discrete element method. Journal of Central South University 24(12):2894–2905, DOI: https://doi.org/10.1007/s11771-017-3703-6
Zhang HY, Xu WJ, Yu YZ (2016) Triaxial tests of soil-rock mixtures with different rock block distributions. Soils and Foundations 56(1):44–56, DOI: https://doi.org/10.1016/j.sandf.2016.01.004
Zhou SW, Rabczuk T, Zhuang XY (2018a) Phase field modeling of quasi-static and dynamic crack propagation: COMSOL implementation and case studies. Advances in Engineering Software 122:31–49, DOI: https://doi.org/10.1016/j.advengsoft.2018.03.012
Zhou SW, Zhuang XY, Rabczuk T (2018b) A phase-field modeling approach of fracture propagation in poroelastic media. Engineering Geology 240:189–203, DOI: https://doi.org/10.1016/j.advengsoft.2018.03.012
Zhou SW, Zhuang XY, Rabczuk T (2019) Phase-field modeling of fluid-driven dynamic cracking in porous media. Computer Methods in Applied Mechanics and Engineering 350:169–198, DOI: https://doi.org/10.1016/j.cma.2019.03.001
Zhuang XY, Zhou SW, Sheng M, Li GS (2020) On the hydraulic fracturing in naturally-layered porous media using the phase field method. Engineering Geology 266:105306, DOI: https://doi.org/10.1016/j.enggeo.2019.105306
Acknowledgements
The financial supports provided by the National Key R&D Program of China (2018YFC1508501), the National Natural Science Foundation of China (Grant Nos. 11772116, 11572110), the Fundamental Research Funds for the Central Universities (No. 2019B73414) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (No.SJKY19_0451) and the Qing Lan Project are gratefully acknowledged.
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Liu, S., Wang, H., Xu, W. et al. Numerical Investigation of the Influence of Rock Characteristics on the Soil-Rock Mixture (SRM) Slopes Stability. KSCE J Civ Eng 24, 3247–3256 (2020). https://doi.org/10.1007/s12205-020-0034-1
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DOI: https://doi.org/10.1007/s12205-020-0034-1