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A hybrid data-driven approach for rainfall-induced landslide susceptibility mapping:Physically-based probabilistic model with convolutional neural network 认领 引用 被引量：7
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作者 Hong-Zhi Cui Bin Tong +2 位作者 Tao Wang Jie Dou Jian Ji 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第8期4933-4951,共19页
Landslide susceptibility mapping(LSM)plays a crucial role in assessing geological risks.The current LSM techniques face a significant challenge in achieving accurate results due to uncertainties associated with region... Landslide susceptibility mapping(LSM)plays a crucial role in assessing geological risks.The current LSM techniques face a significant challenge in achieving accurate results due to uncertainties associated with regional-scale geotechnical parameters.To explore rainfall-induced LSM,this study proposes a hybrid model that combines the physically-based probabilistic model(PPM)with convolutional neural network(CNN).The PPM is capable of effectively capturing the spatial distribution of landslides by incorporating the probability of failure(POF)considering the slope stability mechanism under rainfall conditions.This significantly characterizes the variation of POF caused by parameter uncertainties.CNN was used as a binary classifier to capture the spatial and channel correlation between landslide conditioning factors and the probability of landslide occurrence.OpenCV image enhancement technique was utilized to extract non-landslide points based on the POF of landslides.The proposed model comprehensively considers physical mechanics when selecting non-landslide samples,effectively filtering out samples that do not adhere to physical principles and reduce the risk of overfitting.The results indicate that the proposed PPM-CNN hybrid model presents a higher prediction accuracy,with an area under the curve(AUC)value of 0.85 based on the landslide case of the Niangniangba area of Gansu Province,China compared with the individual CNN model(AUC=0.61)and the PPM(AUC=0.74).This model can also consider the statistical correlation and non-normal probability distributions of model parameters.These results offer practical guidance for future research on rainfall-induced LSM at the regional scale. 展开更多
关键词 Rainfall landslides Landslide susceptibility mapping Hybrid model Physically-based model Convolution neural network(CNN) Probability of failure(POF)
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A simplified physically-based breach model for a high concrete-faced rockfill dam:A case study 认领 引用 被引量：6
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作者 Qi-ming Zhong Sheng-shui Chen Zhao Deng 《Water Science and Engineering》 EI CAS CSCD 2018年第1期46-52,共7页
A simplified physically-based model was developed to simulate the breaching process of the Gouhou concrete-faced rockfill dam （CFRD）, which is the only breach case of a high CFRD in the world. Considering the dam he... A simplified physically-based model was developed to simulate the breaching process of the Gouhou concrete-faced rockfill dam （CFRD）, which is the only breach case of a high CFRD in the world. Considering the dam height, a hydraulic method was chosen to simulate the initial scour position on the downstream slope, with the steepening of the downstream slope taken into account; a headcut erosion formula was adopted to simulate the backward erosion as well. The moment equilibrium method was utilized to calculate the ultimate length of a concrete slab under its self-weight and water loads. The calculated results of the Gouhou CFRD breach case show that the proposed model provides reasonable peak breach flow, final breach width, and failure time, with relative errors less than 15% as compared with the measured data. Sensitivity studies show that the outputs of the proposed model are more or less sensitive to different parameters. Three typical parametric models were compared with the proposed model, and the comparison demonstrates that the proposed physically-based breach model performs better and provides more detailed results than the parametric models. 展开更多
关键词 Concrete-faced rockfill dam Physically-based breach model Parametric breach model Sensitivity analysis Gouhou CFRD
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Physically-based approach to analyze rainfall-triggered landslide using hydraulic gradient as slide direction 认领 引用 被引量：3
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作者 Qi-hua RAN Dan-yang SU +3 位作者 Qun QIAN Xu-dong FU Guang-qian WANG Zhi-guo HE 《Journal of Zhejiang University-SCIENCE A》 SCIE EI CAS CSCD 2012年第12期943-957,共15页
An infinite slope stability numerical model driven by the comprehensive physically-based integrated hydrology model(InHM)is presented.In this approach,the failure plane is assumed to be parallel to the hydraulic gradi... An infinite slope stability numerical model driven by the comprehensive physically-based integrated hydrology model(InHM)is presented.In this approach,the failure plane is assumed to be parallel to the hydraulic gradient instead of the slope surface.The method helps with irregularities in complex terrain since depressions and flat areas are allowed in the model.The present model has been tested for two synthetic single slopes and a small catchment in the Mettman Ridge study area in Oregon,United States,to estimate the shallow landslide susceptibility.The results show that the present approach can reduce the simulation error of hydrological factors caused by the rolling topography and depressions,and is capable of estimating spatial-temporal variations for landslide susceptibilities at simple slopes as well as at catchment scale,providing a valuable tool for the prediction of shallow landslides. 展开更多
关键词 Shallow landslide Infinite slope stability model Hydraulic gradient Physically-based hydrology model Integrated hydrology model(InHM)
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Physically-based fluid animation:A survey 认领 引用 被引量：6
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作者 TAN Jie YANG XuBo 《Science in China(Series F)》 2009年第5期723-740,共18页
In this paper, we give an up-to-date survey on physically-based fluid animation research. As one of the most popular approaches to simulate realistic fluid effects, physically-based fluid animation has spurred a large... In this paper, we give an up-to-date survey on physically-based fluid animation research. As one of the most popular approaches to simulate realistic fluid effects, physically-based fluid animation has spurred a large number of new results in recent years. We classify and discuss the existing methods within three categories： Lagrangian method, Eulerian method and Lattice-Boltzmann method. We then introduce techniques for seven different kinds of special fluid effects. Finally we review the latest hot research areas and point out some future research trends, including surface tracking, fluid control, hybrid method, model reduction, etc. 展开更多
关键词 physically-based animation Navier-Stokes equations finite difference method smoothed particle hydrodynamics Lattice-Boltzmannmethod particle level set
Meshless simulation for skeleton driven elastic deformation 认领 引用 被引量：1
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作者 SONG Chao ZHANG Hong-xin +1 位作者 HUANG Jin BAO Hu-jun 《Journal of Zhejiang University-SCIENCE A》 EI CAS 2006年第9期1596-1602,共7页
A meshless simulation system is presented for elastic deformation driven by skeleton in this paper. In this system, we propose a new method for calculating node rotation while applying a similar technique with stiffne... A meshless simulation system is presented for elastic deformation driven by skeleton in this paper. In this system, we propose a new method for calculating node rotation while applying a similar technique with stiffness warping to tackle the nonlinear large deformation. In our method, all node rotations are evaluated from sampling points in attached skeleton by con- structing and solving the diffusion partial differential equation. The experiments indicated that the method can enhance the sta- bility of the dynamics and avoid fussy sub-step calculation in static deformation edition. Moreover, rational deformation results for the area around the skeleton joints can be simulated without user interaction by adopting the simplified technique. 展开更多
关键词 Physically-based deformation Skeleton driven Meshless methods Rotation field
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Lagrangian formulation of continuum with internal long-range interactions 认领 引用
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作者 Zaixing Huang 《Theoretical & Applied Mechanics Letters》 EI CAS 2011年第4期60-63,共4页
Based on a new definition of nonlocal variable,this paper establishes the Lagrangian formulation for continuum with internal long-range interactions.Distinguished from the existing theories,the nonlocal term in the La... Based on a new definition of nonlocal variable,this paper establishes the Lagrangian formulation for continuum with internal long-range interactions.Distinguished from the existing theories,the nonlocal term in the Lagrangian formulation automatically satisfies the zero mean condition determined by the action and reaction law.By this formulation,elastic wave in a rod with the internal long-range interactions is investigated.The dispersion of the elastic wave is predicted. 展开更多
关键词 nonlocal mechanics Lagrangian formulation long-range interactions physically-based nonlocal model
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Leaf Movement Simulation 认领 引用 被引量：3
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作者 冯金辉 陈彦云 +1 位作者 严涛 吴恩华 《Journal of Computer Science & Technology》 SCIE EI 2001年第2期189-192,共4页
This paper presents a method for the animation of leaf movement. Leaves are classified into two classes: moveable and non-moveable. For moveable leaves, their movements consist of two parts: leafstalk rotation and lea... This paper presents a method for the animation of leaf movement. Leaves are classified into two classes: moveable and non-moveable. For moveable leaves, their movements consist of two parts: leafstalk rotation and leaf surface rotation. For each rotation, a movement model was constructed and the movement was computed based on each model, respectively. The final leaf movements were obtained by superposition of these two rotations. The method's principle is simple and easy to use. 展开更多
关键词 physically-based animation leaf tree simulation wind
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Stable and realistic crack pattern generation using a cracking node method 认领 引用 被引量：1
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作者 Juan ZHANG Fuqing DUAN +8 位作者 Mingquan ZHOU Dongcan JIANG Xuesong WANG Zhongke WU Youliang HUANG Guoguang DU Shaolong LIU Pengbo ZHOU Xiangang SHANG 《Frontiers of Computer Science》 SCIE EI CSCD 2018年第4期777-797,共21页
This paper presents a method for simulating surface crack patterns appearing in ceramic glaze, glass, wood and mud. It uses a physically and heuristically combined method to model this type of crack pattern. A stress ... This paper presents a method for simulating surface crack patterns appearing in ceramic glaze, glass, wood and mud. It uses a physically and heuristically combined method to model this type of crack pattern. A stress field is defined heuristically over the triangle mesh of an object. Then, a first-order quasi-static cracking node method （CNM） is used to model deformation. A novel combined stress and energy combined crack criterion is employed to address crack initiation and propagation separately according to physics. Meanwhile, a highest-stress-first rule is applied in crack initiation, and a breadth-first rule is applied in crack propagation. Finally, a local stress relaxation step is employed to evolve the stress field and avoid shattering artifacts. Other related issues are also discussed, such as the elimination of quadra- ture sub-cells, the prevention of parallel cracks and spurious crack procession. Using this method, a variety of crack patterns observed in the real world can be reproduced by changing a set of parameters. Consequently, our method is robust because the computational mesh is independent of dynamic cracks and has no sliver elements. We evaluate the realism of our results by comparing them with photographs of realworld examples. Further, we demonstrate the controllability of our method by varying different parameters. 展开更多
关键词 crack pattern generation fracture simulation physically-based extend finite element method crack nodemethod
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