International Journal for Numerical and Analytical Methods in Geomechanics最新文献

State‐Equivalent Compaction of Dam Rockfill: Experimental Method, Constitutive Formulation and Numerical Case Study 大坝堆石料的状态等效压实：实验方法、本构公式和数值实例研究

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-27 DOI: 10.1002/nag.70315

Jiajun Pan, Yicheng Chen, Zhanlin Cheng, Wei Zhao, Xudong Zhao, Yiwei Lu, Yanli Wang, Han Xu, Yongzhen Zuo, Qi Zhang

{"title":"State‐Equivalent Compaction of Dam Rockfill: Experimental Method, Constitutive Formulation and Numerical Case Study","authors":"Jiajun Pan, Yicheng Chen, Zhanlin Cheng, Wei Zhao, Xudong Zhao, Yiwei Lu, Yanli Wang, Han Xu, Yongzhen Zuo, Qi Zhang","doi":"10.1002/nag.70315","DOIUrl":"https://doi.org/10.1002/nag.70315","url":null,"abstract":"This study demonstrates that the pressuremeter modulus can serve as a practical state descriptor for rockfill and can be used directly in constitutive analysis. Large‐scale pressuremeter model tests on two gradations established a clear, monotonic relation between pressuremeter modulus and dry density. Using this relation, densities corresponding to target moduli of 75 and 90 MPa were selected for drained triaxial tests. The results reveal an equal‐modulus equivalence for the two scaled gradations tested: once specimens are compacted to the dry densities corresponding to the same pressuremeter modulus, their stress–strain and volumetric responses become practically indistinguishable across these gradations. These conclusions are drawn from tests on only two scaled materials derived from the same prototype rockfill, so the observed equivalence should not yet be regarded as universal. Building on this finding, we integrate the pressuremeter modulus into a standard hypoplastic formulation through a minimal two‐part enhancement: a state normalisation of the density measure and a stiffness‐scale alignment, achieved by scaling the granular hardness parameter in proportion to the measured modulus. The tensorial structure and calibrated constants of the reference model remain unchanged; only zone‐wise state inputs derived from field or laboratory modulus are required. With one parameter set calibrated at 75 MPa, the framework reproduces element tests at both target moduli and is implemented in a three‐dimensional embankment model of the 298 m Lianghekou rockfill dam. Predicted settlement profiles during staged construction closely match monitoring, capturing both the magnitude and the curvature of the settlement troughs and the observed flattening in zones that achieved higher modulus. A baseline analysis without modulus‐based normalisation shows systematic bias, underscoring the value of the proposed integration.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"28 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simplified Simulation Method and Practical Prediction Tool for Mechanized Tunnelling Induced Settlements Based on Hybrid Volume Loss‐Grouting Pressure Method 基于体积损失-注浆压力混合法的机械化隧道诱导沉降简化模拟方法及实用预测工具

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-25 DOI: 10.1002/nag.70332

Chengwen Wang, Xiaoli Liu, Nan Hu, Wenli Yao, Enzhi Wang, Guohui Yan

{"title":"Simplified Simulation Method and Practical Prediction Tool for Mechanized Tunnelling Induced Settlements Based on Hybrid Volume Loss‐Grouting Pressure Method","authors":"Chengwen Wang, Xiaoli Liu, Nan Hu, Wenli Yao, Enzhi Wang, Guohui Yan","doi":"10.1002/nag.70332","DOIUrl":"https://doi.org/10.1002/nag.70332","url":null,"abstract":"Settlement prediction is crucial in the design and construction of mechanized tunnels, with numerical simulation serving as an effective tool for estimating settlement trough. This study proposes a simplified two‐dimensional simulation method as an alternative to complex and time‐consuming three‐dimensional simulations for predicting settlement trough. By integrating the volume loss method and grouting pressure method, this study introduces a hybrid volume loss‐grouting pressure (VL‐GP) method, a two‐dimensional simplified simulation approach for estimating settlement in single and twin mechanized tunnels. The proposed method was validated using six historical cases, demonstrating its advantages over other simplified simulation methods in accurately reflecting the construction process and improving prediction accuracy. A parameter study on the hybrid VL‐GP method examined the influence of soil properties, tunnel geometry, and construction parameters on settlement troughs in mechanized tunnels. Results indicate that clay exhibits greater sensitivity than sand, emphasizing the need to consider multiple factors when using settlement control as a design and construction criterion. To facilitate the application of the hybrid VL‐GP method, a graphical user interface (GUI) was developed using FLAC3D and Gmsh, integrating Python and Fish programming to provide a user‐friendly tool for predicting and evaluating induced settlement in mechanized tunnels.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"8 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermo‐Hydrodynamic Processes of Microparticles in Fractures: A CFD–DEM Approach 裂缝中微颗粒的热流体动力学过程：CFD-DEM方法

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-23 DOI: 10.1002/nag.70331

Hoai Thanh Nguyen, Pania Newell

{"title":"Thermo‐Hydrodynamic Processes of Microparticles in Fractures: A CFD–DEM Approach","authors":"Hoai Thanh Nguyen, Pania Newell","doi":"10.1002/nag.70331","DOIUrl":"https://doi.org/10.1002/nag.70331","url":null,"abstract":"Controlling fracture permeability plays a critical role in subsurface energy applications, particularly in geothermal energy production and enhanced carbon sequestration, where regulating fluid flow is essential. The use of microcapsules has become a promising solution to enhance fracture permeability by providing a controlled sealing mechanism. This study employs a coupled Computational Fluid Dynamics Discrete Element Method (CFD‐DEM) approach to investigate the thermo‐hydro transport behavior of microcapsules in fractured environments, focusing on the influence of temperature, particle size, and concentration. The results show that temperature significantly affects microcapsules transport dynamics, with low temperatures promoting clustering due to increasing fluid viscosity, while high temperatures lead to excessive dispersion and reduce sealing. The medium temperature conditions create a balance between mobility and clustering, which controls the sealing behavior to suit the desired goal. Additionally, large microcapsules exhibit stronger sealing characteristics, whereas small ones maintain high mobility but are less effective for sealing. An interesting stagnation effect is also observed for medium size microcapsules, where the interaction of drag, inertia, and gravity can contribute to the control of the sealing behavior of the particles. Furthermore, high microcapsule concentrations can enhance aggregation at low temperatures, but may cause over‐dispersion at high temperatures, due to the collisional forces between the particles. These findings are extremely valuable for devising conditions for particles suitable for different purposes in controlling the transport and sealing behavior of particles in fractures in geothermal environments.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"26 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Identification of the Critical Particle Size for Skeletal Fractions in Fractal‐Graded Soils 分形分级土骨架组分临界粒径的数值识别

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-20 DOI: 10.1002/nag.70329

Pingfan Wang, Jinfeng Bi, Xianqi Luo, Yunwei Shi, Zhuomin Li

{"title":"Numerical Identification of the Critical Particle Size for Skeletal Fractions in Fractal‐Graded Soils","authors":"Pingfan Wang, Jinfeng Bi, Xianqi Luo, Yunwei Shi, Zhuomin Li","doi":"10.1002/nag.70329","DOIUrl":"https://doi.org/10.1002/nag.70329","url":null,"abstract":"Internal stability is an important attribute for granular soils in assessing the sensitivity to suffusion. The particle composition of soil matrix can be used to establish the internal stability criterion. Overviews of current researches on the soil skeleton, the critical particle size for the skeletal fraction is unclear and inadequate, especially for soil matrix with significant fine contents. The content of erodible particles cannot be accurately determined to assert the internal unstable. In this article, a new formula for identifying the critical particle size of soil matrix with a particular particle size distribution is derived analytically. The soil particles are separated into filling and skeletal fractions based on their influence on the matrix volume. A modified experimental method is designed to investigate the separation point of particle fractions using the discrete element numerical simulation. The results indicate that the critical particle size of fractal‐graded soil can be expressed as a function concerning particle size ratio and fractal dimension. Particles larger than the critical particle size belong to the skeletal fractions, the remaining particles are the filling fractions that implicate the potential erodible particles in suffusion. A new geometrical criterion is proposed to evaluate whether soil matrix is overfilled by filling fractions based on the critical mass ratio rather than conventional fine content thresholds, which demonstrates broader applicability across widely graded soils. This study will facilitate further research on the internal stability of graded soils, the design of filter layers, and establishing a unified criterion for assessing the sensitivity to suffusion.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"9 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Analytical Approach for Predicting Vapor Migration Induced by Pot Cover Effect With Field Test Validation 一种预测罐盖效应引起蒸汽迁移的分析方法及现场试验验证

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-20 DOI: 10.1002/nag.70326

Xiao Qu, Yanfei Zhang, Ke Shi, Daniel Dias

{"title":"An Analytical Approach for Predicting Vapor Migration Induced by Pot Cover Effect With Field Test Validation","authors":"Xiao Qu, Yanfei Zhang, Ke Shi, Daniel Dias","doi":"10.1002/nag.70326","DOIUrl":"https://doi.org/10.1002/nag.70326","url":null,"abstract":"Pot Cover effect describes a process in which vapor migrates upward along a temperature gradient, condenses and accumulates as liquid water or ice at the base of a covering impermeable layer, ultimately resulting in pavement damage. Although numerical simulation, analytical calculation and empirical models are widely used to calculate vapor migration caused by Pot Cover effect, there are limitations in their computational efficiency under specific conditions. To overcome this limitation, an analytical approach based on Fick's law and fundamental physical assumptions is developed to quantitatively describe vapor migration. Validation using field test data from Beijing Daxing International Airport confirms the accuracy of this approach in capturing vapor migration in freezing unsaturated soils. Furthermore, the analytical approach is applied to investigate the influence of the separation layer's depth and gas permeability on vapor migration. The optimal configuration is identified as a layer positioned at the maximum freezing depth (40 cm in this study) with nearly 0% gas permeability, which most effectively inhibits vapor migration induced by Pot Cover effect. Finally, by integrating analytical and experimental results, the influence of soil gas permeability, initial water content, and dry density on vapor migration is investigated. The analysis indicates that higher initial water content and dry density diminish soil gas permeability, thereby restraining vapor migration and alleviating the water accumulation characteristic of Pot Cover effect. The derived analytical framework provides a practical and efficient tool for designing mitigation strategies against Pot Cover effect in cold‐region engineering.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"23 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consolidation of the Saturated Composite Foundation With Periodic Reinforcing Piles by the FHFE Method 周期桩加固饱和复合地基的FHFE法加固

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-20 DOI: 10.1002/nag.70324

Jian‐Fei Lu, Yang Liu

{"title":"Consolidation of the Saturated Composite Foundation With Periodic Reinforcing Piles by the FHFE Method","authors":"Jian‐Fei Lu, Yang Liu","doi":"10.1002/nag.70324","DOIUrl":"https://doi.org/10.1002/nag.70324","url":null,"abstract":"The consolidation of the saturated composite foundation with periodic reinforcing piles (CFPP) under external loads is fundamental for the design of the composite foundation. To investigate the consolidation of the CFPP subjected to an arbitrary load accurately, the pseudo‐periodic property for the CFPP under a spatially harmonic load is introduced and proved in this study. Based on the pseudo‐periodic property of the CFPP, the Fourier harmonic finite element (FHFE) method for the CFPP is developed. To develop the method, the response of the CFPP to a spatially harmonic load is decomposed into a series of Fourier harmonics first. Then, by using the Biot's theory and virtual work principle, the FEM equations for each Fourier harmonic of the CFPP are established. By introducing the impendence matrix for the underlying half‐space bedrock, the coupled FEM equations for the Fourier harmonic of the CFPP and bedrock in the Laplace domain are developed. Solution of the coupled FEM equations for the Fourier harmonics in the Laplace domain and inversion of the Laplace transform yield the time‐spatial domain response of the CFPP to a spatially harmonic load. The total response of the CFPP to an arbitrary load can then be determined by synthesizing all the responses of the CFPP to the corresponding spatially harmonic components of the arbitrary load. With the proposed FHFE method for the CFPP, the influences of the permeability and shear modulus of the piles, spacing between the piles as well as load types are investigated.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"23 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Surrogate Model for Stability Assessment of Two‐Layered Cohesive Slopes 两层粘性边坡稳定性评价的替代模型

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-17 DOI: 10.1002/nag.70327

Naloan Coutinho Sampa, Humberto C. F. S. S. S. Volpato

{"title":"A Surrogate Model for Stability Assessment of Two‐Layered Cohesive Slopes","authors":"Naloan Coutinho Sampa, Humberto C. F. S. S. S. Volpato","doi":"10.1002/nag.70327","DOIUrl":"https://doi.org/10.1002/nag.70327","url":null,"abstract":"This paper introduces a novel surrogate model for rapid stability evaluation of two‐layered cohesive slopes under undrained conditions. The model eliminates the need for iterative calculations and slip surface searches, allowing for fast and accurate stability assessments without reliance on advanced numerical tools. The formulation is derived from an extensive parametric study using the Morgenstern–Price limit equilibrium method and is expressed through two physically meaningful dimensionless parameters: a stability number and a strength‐contrast ratio . These parameters directly govern the factor of safety, while a critical strength ratio delineates the transition between shallow (upper‐layer) and deep (two‐layer) failure mechanisms. The model is validated against SLOPE/W benchmarks and independently corroborated using Slide2 (multiple LEM variants) and PLAXIS 2D (FEM), showing high accuracy ( R 2 ≈ 0.999) and low error (92% of predictions within ±5%) across 384 slope configurations. Two‐ and three‐dimensional stability charts are provided for immediate visualization and practical use. As a dimensionless, non‐iterative surrogate, the model offers high computational efficiency and mechanistic insight, effectively bridging classical stability charts and advanced numerical methods for preliminary design, parametric exploration, and large‐scale slope screening.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"65 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the Effects of Empty Hole Spacing on Fracture Propagation and Damage Evolution Mechanisms in Multi‐Hole Blasting 多孔爆破空孔间距对裂缝扩展及损伤演化机制的影响研究

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-14 DOI: 10.1002/nag.70320

Yunjuan Chen, Xiaoyang Liu, Jiarui Su, Jun Wang, Dapeng Qiu, Gaohan Jin

{"title":"Study on the Effects of Empty Hole Spacing on Fracture Propagation and Damage Evolution Mechanisms in Multi‐Hole Blasting","authors":"Yunjuan Chen, Xiaoyang Liu, Jiarui Su, Jun Wang, Dapeng Qiu, Gaohan Jin","doi":"10.1002/nag.70320","DOIUrl":"https://doi.org/10.1002/nag.70320","url":null,"abstract":"The smooth blasting of hard granite tunnel will have problems such as poor fragmentation of the tunnel face. To address these issues, this study investigates the mechanism of empty hole blasting. According to the blasting theory, by deducing the formula of the equivalent damage zone radius of the group hole, and a criterion for defining the blasting effect is proposed. The rationality is verified by numerical simulation and field test. The results show that the empty hole can change the stress distribution of the group hole blasting, and has the effect of directional to crack. With the increase of empty hole‐group hole spacing, the peak stress decreases gradually. Aiming at the damage change, the damage feature transformation coefficient m is proposed to define the blasting effect and m = 0.6 is determined as the damage feature transformation threshold. With the increase of distance, the propagation speed and length of rock cracks gradually weaken, and the regional penetration effect gradually deteriorates. The relationship between damage threshold and vibration velocity is constructed. It is concluded that when the space is greater than the damage threshold, the maximum vibration velocity fluctuation interval gradually increases, and the stress wave propagation velocity gradually weakens. The Sadovsky formula of spacing and vibration velocity peak is constructed to characterize the change law. It provides a reference for the optimization of smooth blasting parameters in hard granite tunnels.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"21 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147682055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Investigation of the Contribution of Different‐Scale Rock Joint Roughness to Shear Strength 不同尺度岩石节理粗糙度对抗剪强度贡献的数值研究

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-14 DOI: 10.1002/nag.70321

Hanqian Weng, Zhigang Tao, Zhicheng Tang, Chenjie Hong, Kai Wang, Guangtao Zhang, Chuanjiu Zhang, Man Huang

{"title":"Numerical Investigation of the Contribution of Different‐Scale Rock Joint Roughness to Shear Strength","authors":"Hanqian Weng, Zhigang Tao, Zhicheng Tang, Chenjie Hong, Kai Wang, Guangtao Zhang, Chuanjiu Zhang, Man Huang","doi":"10.1002/nag.70321","DOIUrl":"https://doi.org/10.1002/nag.70321","url":null,"abstract":"The shear resistance of rock joints is significantly influenced by the different‐scale surface roughness. In this paper, the revised Grasselli's morphological parameters, and , are demonstrated to describe small‐scale unevenness (second‐order roughness) and large‐scale waviness (first‐order roughness), respectively. This provides a more straightforward approach for roughness decomposition of rock joints. Furthermore, the numerical shear tests are conducted using the Particle Flow Code (PFC) to reproduce the shear behavior of rock joints with progressive degradation of two‐order roughness. The results indicate that the failure of waviness is governed by the tensile strength of the joint walls, whereas the failure of unevenness is controlled by compressive strength. Based on these findings, a modified shear strength model is developed by extending the joint roughness coefficient‐joint compressive strength (JRC‐JCS) model. The proposed model is validated through numerical simulations, laboratory direct shear tests, and published data on rock joints with both standard profiles and natural surfaces. Compared with the JRC‐JCS model, the proposed model provides a more refined description of joint surface roughness by explicitly distinguishing the contributions of waviness and unevenness. It could predict the peak shear strength more accurately and offers better support for the stability assessment of jointed rock masses.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"38 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Coupled u – p w SPH Formulation for Hydromechanical Modeling of Retrogressive Landslides and Comparison With a Penalty‐Based Approach 退行性滑坡水力学模型的耦合u - p - w - SPH公式及其与基于惩罚的方法的比较

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2026-04-13 DOI: 10.1002/nag.70322

Enrique M. del Castillo, Ronaldo I. Borja, Alomir H. Fávero Neto

{"title":"A Coupled u – p w SPH Formulation for Hydromechanical Modeling of Retrogressive Landslides and Comparison With a Penalty‐Based Approach","authors":"Enrique M. del Castillo, Ronaldo I. Borja, Alomir H. Fávero Neto","doi":"10.1002/nag.70322","DOIUrl":"https://doi.org/10.1002/nag.70322","url":null,"abstract":"We present a strongly coupled displacement () and pore water pressure () version of the Biot–Zienkiewicz (– ) equations in saturated porous media for the meshfree Lagrangian smoothed particle hydrodynamics (SPH) method. We propose two distinct formulations using a single particle layer, two‐phase framework, one based on a one‐step solution of a pressure Poisson equation (PPE formulation) and another allowing compressibility of the fluid resulting in an explicit rate equation for the pore pressure (PR formulation). We discuss both formulations from a numerical perspective and verify them using benchmark problems from poroelasticity, including Cryer's problem, as well as using undrained triaxial tests, where we additionally compare the results against a weakly coupled penalty‐based undrained framework for SPH. Beyond the formulations, the focus of this work is on modeling retrogressive landslides in saturated sensitive clays, which are particularly destructive due to their extended runout and fast movement. Our simulations emphasize performing strongly coupled hydromechanical modeling even for quasi‐undrained conditions, contrary to the predominant practices in the literature, as the structural features of the landslides change significantly when pore pressure dissipation and coupled effects are included. Additionally, spreads develop under a greater variety of slope conditions as opposed to the more fluidized flowslide type of retrogressive landslides captured when solely considering undrained behavior. Lastly, we apply the PR formulation to explore how slope steepness and height influence deformation modes and apply the framework to simulate the 1994 Sainte‐Monique landslide, recreating the topographic profile, runout, and deformation features post‐failure.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"22 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147682054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0