Modelling the stability of a soil-rock-mixture slope based on the digital image technology and strength reduction numerical manifold method

Abstract In the present paper, the digital image processing (DIP) technology is employed to establish the structure model of a real SRM (soil-rock-mixture) slope. Based on the structure model, the most recently developed strength reduction numerical manifold method (SRNMM) is adopted to investigate the stability of the SRM slope. Based on the proposed numerical model, the testing results show that: 1) the DIP technology can accurately build the structure model of the SRM slope; 2) the SRNMM can obtain the slopes’ FOSs (factors of safety) with satisfactory accuracy, as well as obtain the main failure mode of the slopes; 3) the presence of rock blocks will improve the stability of the soil slopes.

[1]  Zhong Qi Yue,et al.  Study on the mesostructure and mesomechanical characteristics of the soil–rock mixture using digital image processing based finite element method , 2008 .

[2]  H. Zheng,et al.  Hydro-mechanical simulation of the saturated and semi-saturated porous soil–rock mixtures using the numerical manifold method , 2020 .

[3]  Li Xiao,et al.  STRUCTURE MODEL CONSTRUCTION OF ROCK AND SOIL AGGREGATE BASED ON DIGITAL IMAGE TECHNOLOGY AND ITS NUMERICAL SIMULATION ON MECHANICAL STRUCTURE EFFECTS , 2010 .

[4]  Chunguang Li,et al.  Slope stability analysis based on elasto‐plastic finite element method , 2005 .

[5]  H. Zheng,et al.  On generation of lumped mass matrices in partition of unity based methods , 2017 .

[6]  D. V. Griffiths,et al.  SLOPE STABILITY ANALYSIS BY FINITE ELEMENTS , 1999 .

[7]  H. Zheng,et al.  Investigation of the sequential excavation of a soil-rock-mixture slope using the numerical manifold method , 2019, Engineering Geology.

[8]  H. Zheng,et al.  Modeling unconfined seepage flow in soil-rock mixtures using the numerical manifold method , 2019, Engineering Analysis with Boundary Elements.

[9]  G. Crosta.  Failure and flow development of a complex slide: the 1993 Sesa landslide , 2001 .

[10]  Chuangbing Zhou,et al.  Modeling Unconfined Seepage Flow Using Three-Dimensional Numerical Manifold Method , 2010 .

[11]  H. Zheng,et al.  An improved numerical manifold method with multiple layers of mathematical cover systems for the stability analysis of soil-rock-mixture slopes , 2020 .

[12]  Yongtao Yang,et al.  Enriched mixed numerical manifold formulation with continuous nodal gradients for dynamics of fractured poroelasticity , 2020 .

[13]  H. Zheng,et al.  Modeling the entire progressive failure process of rock slopes using a strength-based criterion , 2020 .

[14]  Gen-Hua Shi,et al.  Manifold Method of Material Analysis , 1992 .

[15]  D. Owen,et al.  Finite elements in plasticity : theory and practice , 1980 .

[16]  Charles E. Augarde,et al.  Fracture modeling using meshless methods and level sets in 3D: Framework and modeling , 2012 .

[17]  Tao Chen,et al.  Numerical determination of the effective permeability coefficient of soil–rock mixtures using the numerical manifold method , 2018, International Journal for Numerical and Analytical Methods in Geomechanics.

[18]  H. Zheng,et al.  A high-order numerical manifold method with continuous stress/strain field , 2020 .

[19]  G. Shi.  Contact theory , 2015 .

[20]  Tamotsu Matsui,et al.  Finite element slope stability analysis by shear strength reduction technique , 1992 .

[21]  H. Zheng,et al.  Three-dimensional fracture propagation with numerical manifold method , 2016 .

[22]  H. Zheng,et al.  Stability analysis of soil-rock-mixture slopes using the numerical manifold method , 2019 .

[23]  Hong Zheng,et al.  Direct Approach to Treatment of Contact in Numerical Manifold Method , 2017 .

[24]  Hong Zheng,et al.  Explicit Discontinuous Deformation Analysis Method with Lumped Mass Matrix for Highly Discrete Block System , 2018, International Journal of Geomechanics.

[25]  Sunil Sharma,et al.  SLOPE STABILITY AND STABILIZATION METHODS , 1996 .

[26]  H. Rui-lin.  Stability analysis of soil-rock mixed slope based on digital image technology , 2008 .

[27]  M. Hossaini,et al.  Statistical analysis of bimslope stability using physical and numerical models , 2019, Engineering Geology.

[28]  Y. Liu,et al.  Rock-soil slope stability analysis by two-phase random media and finite elements , 2017, Geoscience Frontiers.

[29]  Khader M. Hamdia,et al.  Stochastic analysis of the fracture toughness of polymeric nanoparticle composites using polynomial chaos expansions , 2017, International Journal of Fracture.

[30]  A. Khoei,et al.  An extended finite element method for hydraulic fracture propagation in deformable porous media with the cohesive crack model , 2013 .

[31]  Feng Liu,et al.  A new contact potential based three-dimensional discontinuous deformation analysis method , 2020 .

[32]  Guowei Ma,et al.  Footwall slope stability analysis with the numerical manifold method , 2011 .

[33]  T. Belytschko,et al.  A three dimensional large deformation meshfree method for arbitrary evolving cracks , 2007 .

[34]  H. Zheng,et al.  Searching for critical slip surfaces of slopes using stress fields by numerical manifold method , 2020 .

[35]  E. Medley,et al.  The engineering significance of the scale-independence of some Franciscan melanges in California, USA , 1995 .

[36]  J. Z. Zhu,et al.  The finite element method , 1977 .

[37]  H. Zheng,et al.  Numerical study of soil-rock mixture: Generation of random aggregate structure , 2018 .

[38]  Dongdong Xu,et al.  Modeling Wave Propagation in Rock Masses Using the Contact Potential-Based Three-Dimensional Discontinuous Deformation Analysis Method , 2021, Rock Mechanics and Rock Engineering.

[39]  Timon Rabczuk,et al.  A phase-field modeling approach of fracture propagation in poroelastic media , 2018, Engineering Geology.

[40]  H. Zheng,et al.  Sequential excavation analysis of soil-rock-mixture slopes using an improved numerical manifold method with multiple layers of mathematical cover systems , 2019, Engineering Geology.

[41]  H. Zheng,et al.  A mixed three-node triangular element with continuous nodal stress for fully dynamic consolidation of porous media , 2020 .

[42]  Tao Chen,et al.  Mathematical cover refinement of the numerical manifold method for the stability analysis of a soil-rock-mixture slope , 2020 .

[43]  L. Tham,et al.  Digital image proceeding based on finite element method for geomaterials , 2004 .

[44]  H. Zheng,et al.  A high-order three dimensional numerical manifold method with continuous stress/strain field , 2020 .

[45]  R. E. Goodman,et al.  Strength and Deformation Properties of a Physical Model Melange , 1994 .

[46]  A. Kwan,et al.  Particle shape analysis of coarse aggregate using digital image processing , 1999 .

[47]  Hong Zheng,et al.  Hydraulic fracturing modeling using the enriched numerical manifold method , 2018 .

[48]  H. Zheng,et al.  A rigorous and unified mass lumping scheme for higher-order elements , 2017 .

[49]  Yongtao Yang,et al.  Stability analysis of slopes using the vector sum numerical manifold method , 2020, Bulletin of Engineering Geology and the Environment.

[50]  Zhijun Wu,et al.  A zero-thickness cohesive element-based numerical manifold method for rock mechanical behavior with micro-Voronoi grains , 2018, Engineering Analysis with Boundary Elements.

[51]  Edmund Medley,et al.  Orderly Characterization of Chaotic Franciscan Melanges , 2001 .