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- Acoustic emission (4)
- Calcareous sand (4)
- Microstructure (4)
- Anisotropy (3)
- Crack propagation (3)
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- Model test (3)
- Numerical simulation (3)
- Rock mechanics (3)
- Shield tunnel (3)
- 3D reconstruction (2)
- Analytical solution (2)
- CT scan (2)
- Compacted loess (2)
- Cyclic loading (2)
- Drying?wetting cycle (2)
- Dynamic disturbance (2)
- Dynamic response (2)
- Failure mechanism (2)
- Geopolymer (2)
- Granite (2)
- Initial water content (2)
- Internal erosion (2)
- Mechanical property (2)
- Microbially induced calcium carbonate precipitation (MICP) (2)
- Numerical manifold method (2)
- Pore characteristics (2)
- Pore size distribution (2)
- Prediction model (2)
- Pressure plate method (2)
- Quantitative characterization (2)
Articles 31 - 60 of 107
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Buckling Failure Analysis And Numerical Manifold Method Simulation For Malvern Hills Slope, Qiu-Sheng Wang, Rui-Tao Zhang, Hong Zheng
Buckling Failure Analysis And Numerical Manifold Method Simulation For Malvern Hills Slope, Qiu-Sheng Wang, Rui-Tao Zhang, Hong Zheng
Rock and Soil Mechanics
Based on the energy equilibrium, the computational formula of critical buckling length of multi-layer rock slope is derived. Considering interlayer and cross joints, the numerical manifold method is used to simulate the buckling evolution process of Malvern hills slope in New Zealand, and the theoretical calculation and numerical simulation results are compared with the field measured data. The results show that numerical manifold method can accurately simulate slope buckling failure process by preforming interlayer and cross joints. The process of slope buckling deformation and instability failure can be divided into interlayer dislocation-slight bending, slope toe traction-sharp uplift and accelerated sliding-landslide …
Post-Failure Analysis Of Landslides In Spatially Varying Soil Deposits Using Stochastic Material Point Method, Guo-Tao Ma, Mohammad Rezania, Mohaddeseh Mousavi Nezhad, Bu-Tao Shi
Post-Failure Analysis Of Landslides In Spatially Varying Soil Deposits Using Stochastic Material Point Method, Guo-Tao Ma, Mohammad Rezania, Mohaddeseh Mousavi Nezhad, Bu-Tao Shi
Rock and Soil Mechanics
This paper presents the probabilistic analysis of landslides in spatially variable soil deposits, modeled by a stochastic framework which integrates the random field theory with generalized interpolation material point method (GIMP). Random fields are simulated using Cholesky matrix decomposition (CMD) method and Latin hypercube sampling (LHS) method, which represent material properties discretized into sets of random soil shear strength variables with statistical properties. The approach is applied to landslides in clayey deposits under undrained conditions with random fields of undrained shear strength parameters, in order to quantify the uncertainties of post-failure behavior at different scales of fluctuation (SOF) and coefficients …
Three-Dimensional Seismic Stability Of Inhomogeneous Soil Slopes Using Limit Analysis Method, Yu-Nong Li, Chang Liu, Li-Wei Wang
Three-Dimensional Seismic Stability Of Inhomogeneous Soil Slopes Using Limit Analysis Method, Yu-Nong Li, Chang Liu, Li-Wei Wang
Rock and Soil Mechanics
Based on the upper bound limit analysis theorem, the three-dimensional seismic stability of inhomogeneous soil slopes is investigated using the pseudo-dynamic approach, and the explicit expression of the factor of safety is obtained by the gravity increase method (GIM). In addition, the genetic algorithm is used for optimization and the results are verified by comparing with other published data. Parametric studies are performed to investigate the effect of relevant parameters on the stability of slopes. The results indicate that for the slope with the given height, the increase of width-to-height ratio and slope angle, and the decrease of internal friction …
Development And Application Of Multifunctional Shear Test Apparatus For Rock Discontinuity Under Dynamic Disturbance Loading, Guo-Jian Cui, Chuan-Qing Zhang, Hui Zhou, Jing-Jing Lu, Yang Gao, Ming-Ming Hu, Da-Wei Hu
Development And Application Of Multifunctional Shear Test Apparatus For Rock Discontinuity Under Dynamic Disturbance Loading, Guo-Jian Cui, Chuan-Qing Zhang, Hui Zhou, Jing-Jing Lu, Yang Gao, Ming-Ming Hu, Da-Wei Hu
Rock and Soil Mechanics
Dynamic disturbance is an important influence factor that causes the sliding instability of rock discontinuity and then triggers strong dynamic geological disasters, such as earthquakes and rock bursts. In order to study the mechanical response and disaster-causing mechanism of rock discontinuity under dynamic disturbance loading, a multifunctional shear test apparatus for rock discontinuity under dynamic disturbance loading (DDST-1800) is independently developed. The test apparatus is composed of normal and shear loading units with quasi-static loading, various normal boundary conditions, dynamic disturbance loading with complex and wide-frequency waveform (0.5−50 Hz), and wide-range shear velocity loading (0.000 1−10 mm /s) functions, pendulum …
Vertical Vibration Response Of Rigid Strip Footings On A Viscoelastic Soil Layer Overlying Bedrock, Chang-Jie Zheng, Yu-Ze He, Xuan-Ming Ding, Lu-Bao Luan, Ye-Wei Chen
Vertical Vibration Response Of Rigid Strip Footings On A Viscoelastic Soil Layer Overlying Bedrock, Chang-Jie Zheng, Yu-Ze He, Xuan-Ming Ding, Lu-Bao Luan, Ye-Wei Chen
Rock and Soil Mechanics
Considering the influence of soil thickness, the vertical vibration response of rigid strip footings resting on viscoelastic soil is theoretically investigated. Based on the assumptions for footing and foundation with rigid bedrock boundary condition, employing the method of Fourier transform, this mixed-boundary value problem is expressed as a pair of dual integral equations, which are transformed to a set of linear equations by means of Jacobi orthogonal polynomials and solved numerically. The solution in this study is compared with the solution of elastic half-space in the literature to verify its rationality. The results demonstrate that the attenuation of ground waves …
Analysis Of One-Dimensional Nonlinear Consolidation Of Soft Soil Considering Time-Dependent Loading With Continuous Drainage Boundary, Si-Si Wu, Wen-Qiang Luo, Yin-Can Li, Wei-Jian Cui, Shuo Wang
Analysis Of One-Dimensional Nonlinear Consolidation Of Soft Soil Considering Time-Dependent Loading With Continuous Drainage Boundary, Si-Si Wu, Wen-Qiang Luo, Yin-Can Li, Wei-Jian Cui, Shuo Wang
Rock and Soil Mechanics
Soil tends to have nonlinear compression characteristics, and the consolidation laws of soil are different under different compression characteristics. Considering the nonlinear characteristics of soil, variable load and continuous drainage boundary conditions, a one-dimensional consolidation equation is established. Its solutions are obtained by using the unconditionally stable finite difference method and semi-analytical method, and the reliability of the two methods is verified by the degradation of continuous drainage boundary condition and the comparison of the two solutions. Based on the solution of finite difference method, the influences of interface parameter, load parameters and nonlinear parameter on soil consolidation are analyzed …
Shear Fracture Mechanical Properties And Acoustic Emission Characteristics Of Discontinuous Jointed Granite, Gang Wang, Lei-Bo Song, Xi-Qi Liu, Chun-Yan Bao, Man-Qing Lin, Guang-Jian Liu
Shear Fracture Mechanical Properties And Acoustic Emission Characteristics Of Discontinuous Jointed Granite, Gang Wang, Lei-Bo Song, Xi-Qi Liu, Chun-Yan Bao, Man-Qing Lin, Guang-Jian Liu
Rock and Soil Mechanics
No abstract provided.
Dominant Partitioning Method Of Rock Mass Discontinuity Based On Dbscan Selective Clustering Ensemble, Hua-Jin Zhang, Shun-Chuan Wu, Long-Qiang Han
Dominant Partitioning Method Of Rock Mass Discontinuity Based On Dbscan Selective Clustering Ensemble, Hua-Jin Zhang, Shun-Chuan Wu, Long-Qiang Han
Rock and Soil Mechanics
For the problems existing in the traditional single discontinuity (structural plane) based clustering model, such as the risk of misclassification or omission and the inability to identify noise and isolated values, a dominant partitioning method of rock mass discontinuity based on selective clustering ensemble using density-based spatial clustering of applications with noise (DBSCAN) algorithm is proposed. Firstly, the spatial coordinate transformation is performed with the attitude of discontinuity, and the sine of the angle between the unit normal vectors is defined as similarity measurement. Then, a certain number of different base clusters are constructed based on the DBSCAN algorithm, with …
Seismic Analysis Of Cantilever Earth Retaining Walls Embedded In Dry Sand By Simplified Approaches And Finite Element Method, Edgar Ferro, Andrea Oss, Lucia Simeoni
Seismic Analysis Of Cantilever Earth Retaining Walls Embedded In Dry Sand By Simplified Approaches And Finite Element Method, Edgar Ferro, Andrea Oss, Lucia Simeoni
Rock and Soil Mechanics
No abstract provided.
Evolution Of Deformation Field And Energy Of Organic-Rich Oil Shale Under Uniaxial Compression, Lu-Nan Wang, Chuan-Qi Tao, Xiao-Meng Yin, Jie Han, Lei Yang, Gan-Ping Zhang
Evolution Of Deformation Field And Energy Of Organic-Rich Oil Shale Under Uniaxial Compression, Lu-Nan Wang, Chuan-Qi Tao, Xiao-Meng Yin, Jie Han, Lei Yang, Gan-Ping Zhang
Rock and Soil Mechanics
The nonuniform distribution of organic matter in oil shale strata results in different mechanical response and failure mechanism. Uniaxial compression test, digital image correlation method and infrared thermal imaging technology were used to study the deformation field, temperature field and energy evolution characteristics of oil shale during the whole loading process under different organic matter abundances, and to reveal the influence of organic matter abundance on mechanical properties and deformation and failure mechanism of oil shale. The results show that the stress-strain characteristics of oil shale present gradual attenuation as the organic matter abundance increases, while the ductility has improved …
Shear Strength Deterioration Of Geopolymer Stabilized Loess Under Wet-Dry Cycles: Mechanisms And Prediction Model, Rui Chen, Xing Zhang, Ruo-Yu Hao, Wei-Xing Bao
Shear Strength Deterioration Of Geopolymer Stabilized Loess Under Wet-Dry Cycles: Mechanisms And Prediction Model, Rui Chen, Xing Zhang, Ruo-Yu Hao, Wei-Xing Bao
Rock and Soil Mechanics
No abstract provided.
Catastrophe Prediction Of Compression-Induced Fracturing And Failure For A Tower- Shaped Unstable Rock Mass With Gentle Dip Angle, Fu-Chuan Zhou, Hong-Mei Tang, Lin-Feng Wang
Catastrophe Prediction Of Compression-Induced Fracturing And Failure For A Tower- Shaped Unstable Rock Mass With Gentle Dip Angle, Fu-Chuan Zhou, Hong-Mei Tang, Lin-Feng Wang
Rock and Soil Mechanics
No abstract provided.
Determining The Mechanical Parameters Of Asteroid Rocks Using Nwa13618 Meteorites And Microscale Rock Mechanics Experiment, Xu-Hai Tang, Jing-Jing Xu, Yi-Heng Zhang, Qi He, Zheng-Zhi Wang, Guo-Ping Zhang, Quan-Sheng Liu
Determining The Mechanical Parameters Of Asteroid Rocks Using Nwa13618 Meteorites And Microscale Rock Mechanics Experiment, Xu-Hai Tang, Jing-Jing Xu, Yi-Heng Zhang, Qi He, Zheng-Zhi Wang, Guo-Ping Zhang, Quan-Sheng Liu
Rock and Soil Mechanics
In the future, the extraterrestrial human activities, such as resources exploitation and base construction beyond the Earth need the aid of geotechnical engineering technology. Currently, there are only two approaches for humans to obtain the rock samples beyond the Earth: sample-return activities by spacecraft and meteorite investigation. Meteorites are rare, expensive, small and arbitrary in shape, so it is difficult to process them into standard rock samples required by MTS and other traditional macroscale rock mechanical tests. In this paper, a novel technique for measuring mechanical property of small-size meteorites was developed based on microscale rock mechanics experiments (micro-RME) and …
Experimental Study Of Pullout Behavior Of Horizontal Anchor Plates In Geogrid Reinforced Sand, Hong-Hu Zhu, Yu-Xin Gao, Yuan-Hai Li, Yu-Fei Ni
Experimental Study Of Pullout Behavior Of Horizontal Anchor Plates In Geogrid Reinforced Sand, Hong-Hu Zhu, Yu-Xin Gao, Yuan-Hai Li, Yu-Fei Ni
Rock and Soil Mechanics
Geogrid reinforcements can effectively improve the pullout capacity of anchor plates, but the failure mechanism and influencing factors during the uplift process need to be further investigated. In this paper, a series of uplift tests was carried out on horizontal anchor plates in sand to investigate their pullout characteristics, and the influence of various factors was analyzed, including sand density, anchor embedment depth, and number of geogrids and their locations. The particle image velocimetry (PIV) technology was used to explore the deformation and failure mechanism of the sand around anchor plates. The results show that for the pullout capacity of …
Centrifugal Test Study Of Fracture Evolution Characteristics Of Anti-Dip Rock Slope With Steep And Gently Dipping Structural Plane, Hao Yang, Yu-Feng Wei, Xiang-Jun Pei, Yu-Yang Zhang
Centrifugal Test Study Of Fracture Evolution Characteristics Of Anti-Dip Rock Slope With Steep And Gently Dipping Structural Plane, Hao Yang, Yu-Feng Wei, Xiang-Jun Pei, Yu-Yang Zhang
Rock and Soil Mechanics
No abstract provided.
Formation Process Of Underground Freshwater Based On Zoning And Stratification Of Coral Reef Island, Yuan-Jiang Ju, Ming-Jian Hu, Yang Liu, Xu Zhu, Kun-Kun Qin
Formation Process Of Underground Freshwater Based On Zoning And Stratification Of Coral Reef Island, Yuan-Jiang Ju, Ming-Jian Hu, Yang Liu, Xu Zhu, Kun-Kun Qin
Rock and Soil Mechanics
No abstract provided.
Experimental Study Of Regulation Performance Of Open Flexible Debris Flow Barriers, Dong-Po Wang, Jun Zhao, Xiao-Mei Zhang, Xin Yang
Experimental Study Of Regulation Performance Of Open Flexible Debris Flow Barriers, Dong-Po Wang, Jun Zhao, Xiao-Mei Zhang, Xin Yang
Rock and Soil Mechanics
No abstract provided.
Numerical Analysis Of The Impact Of Internal Erosion On Underground Structures: Application To Tunnel Leakage, Ying-Jing Liu, Jie Yang, Zhen-Yu Yin
Numerical Analysis Of The Impact Of Internal Erosion On Underground Structures: Application To Tunnel Leakage, Ying-Jing Liu, Jie Yang, Zhen-Yu Yin
Rock and Soil Mechanics
No abstract provided.
Study On Milling Process And Optimization Of Pick Entry Sequence Of Double-Wheel Trench Cutter, Jian-Cheng Xiao, Hui Zhou, Jing-Jing Lu, Chun Feng, Fu-Tong Xu
Study On Milling Process And Optimization Of Pick Entry Sequence Of Double-Wheel Trench Cutter, Jian-Cheng Xiao, Hui Zhou, Jing-Jing Lu, Chun Feng, Fu-Tong Xu
Rock and Soil Mechanics
No abstract provided.
Analysis Of Preferential Flow Migration In Unsaturated Transparent Soil, Yun Que, Bin Weng, Song-Lin Cai, Jin-Yuan Liu
Analysis Of Preferential Flow Migration In Unsaturated Transparent Soil, Yun Que, Bin Weng, Song-Lin Cai, Jin-Yuan Liu
Rock and Soil Mechanics
No abstract provided.
Calculation Method And Analysis Of Horizontal Frost Heave Effect Of L-Shaped Retaining Wall In Permafrost Regions, Jian-Hua Dong, Xiao-Lei Wu, Li-Jun Shi, Xiao-Yan Yu, Peng-Fei He
Calculation Method And Analysis Of Horizontal Frost Heave Effect Of L-Shaped Retaining Wall In Permafrost Regions, Jian-Hua Dong, Xiao-Lei Wu, Li-Jun Shi, Xiao-Yan Yu, Peng-Fei He
Rock and Soil Mechanics
No abstract provided.
Experimental Study Of Sandstone Crack Propagation Behavior Under Different Seepage Pressures, Li-Ming Zhang, Zai-Quan Wang, Tian-Yang Zhao, Yu Cong
Experimental Study Of Sandstone Crack Propagation Behavior Under Different Seepage Pressures, Li-Ming Zhang, Zai-Quan Wang, Tian-Yang Zhao, Yu Cong
Rock and Soil Mechanics
No abstract provided.
Parameter Back-Analysis Of Hardening Soil Model For Granite Residual Soil And Its Engineering Applications, Min Zhu, Xiang-Sheng Chen, Guo-Tao Zhang, Xiao-Chao Pang, Dong Su, Ji-Qiang Liu
Parameter Back-Analysis Of Hardening Soil Model For Granite Residual Soil And Its Engineering Applications, Min Zhu, Xiang-Sheng Chen, Guo-Tao Zhang, Xiao-Chao Pang, Dong Su, Ji-Qiang Liu
Rock and Soil Mechanics
In recent years, construction works near the operating metro tunnel in granite residual soil have been gradually increasing, and the impact of these construction works on the safety of shield tunnel should not be ignored. Finite element method is an effective method to evaluate the influence of adjacent construction on shield tunnel, but its reliability highly depends on the reasonable selection of soil constitutive model and parameters. In this paper, the current situation of parameter selection of hardening soil model for granite residual soil is firstly reviewed. Then a back-analysis method for determining the parameters of granite residual soil based …
Microstructure Variation And Empirical Fatigue Model Of Salt Rock Under Cyclic Loading, Qiang Zhang, Jun-Bao Wang, Zhan-Ping Song, Shi-Jin Feng, Yu-Wei Zhang, Tao Zeng
Microstructure Variation And Empirical Fatigue Model Of Salt Rock Under Cyclic Loading, Qiang Zhang, Jun-Bao Wang, Zhan-Ping Song, Shi-Jin Feng, Yu-Wei Zhang, Tao Zeng
Rock and Soil Mechanics
No abstract provided.
Stratum Identification Based On Multiple Drilling Parameters And Probability Classification, Dong-Cai Liang, Hua Tang, Zhen-Jun Wu, Yong-Hui Zhang, Yu-Wei Fang
Stratum Identification Based On Multiple Drilling Parameters And Probability Classification, Dong-Cai Liang, Hua Tang, Zhen-Jun Wu, Yong-Hui Zhang, Yu-Wei Fang
Rock and Soil Mechanics
No abstract provided.
Prediction Of Water Inflow In Water-Sealed Oil Storage Caverns Based On Fracture Seepage Effect, Zhong-Ming Jiang, Zhe-Zhen Xiao, Dong Tang, Guo-Fu He, Wei Xu
Prediction Of Water Inflow In Water-Sealed Oil Storage Caverns Based On Fracture Seepage Effect, Zhong-Ming Jiang, Zhe-Zhen Xiao, Dong Tang, Guo-Fu He, Wei Xu
Rock and Soil Mechanics
The accurate prediction on the spatial distribution of water inflow and seepage characteristics in the cavern is one of the basic tasks to ensure the safety and economy during construction and operation of the underground water-sealed oil cavern. In order to study the seepage effect of randomly distributed fractures in the surrounding rock of underground water-sealed oil storage cavern on water inflow prediction and spatial distribution of seepage field, a seepage analysis method of fractured rock mass based on embedded fracture element (EFE) is proposed to analyze the three-dimensional seepage field in Zhanjiang water-sealed oil storage caverns. The reliability of …
Seismic Response And Failure Characteristics Of Granite Slope Using Large-Scale Shaking Table Test, Ze-Hua Zhou, Yan L, Sheng-Rui Su, Yu-Heng Diao, Zuo-Peng Wang, Jian-Kun Wang, Hui Zhao
Seismic Response And Failure Characteristics Of Granite Slope Using Large-Scale Shaking Table Test, Ze-Hua Zhou, Yan L, Sheng-Rui Su, Yu-Heng Diao, Zuo-Peng Wang, Jian-Kun Wang, Hui Zhao
Rock and Soil Mechanics
No abstract provided.
Upper Bound Limit Analysis Of Horizontal And Moment Ultimate Bearing Capacities Of Bucket Foundation, Jia-Yu Wang, Run Liu, Yong-Hong Ji, Xu Yang, Guang-Si Chen, Xiao-Lei Wang
Upper Bound Limit Analysis Of Horizontal And Moment Ultimate Bearing Capacities Of Bucket Foundation, Jia-Yu Wang, Run Liu, Yong-Hong Ji, Xu Yang, Guang-Si Chen, Xiao-Lei Wang
Rock and Soil Mechanics
Offshore wind energy is one of the most important clean energy sources developing in China in recent years. As a new type of offshore wind turbine foundation, the wide-shallow bucket foundation with large diameter has a good ability to withstand moments. It is thus suitable for offshore region in China with soft clay deposits. Moreover, this type of foundation has advantages of onshore prefabrication, foundation-tower-turbine integrated floating transportation and suction installation, resulting in a good benefit for cost reduction. To better understand the bearing capacity of the wide-shallow bucket foundation in clay, numerical analyses are conducted to study the monotonic …
Experimental Study On The Permeability Characteristics Of Laminated Shale Under Cyclic Loading, Chuang Zhang, Song Ren, Fei Wu, Jie Liu, Xu-Hui Zhou
Experimental Study On The Permeability Characteristics Of Laminated Shale Under Cyclic Loading, Chuang Zhang, Song Ren, Fei Wu, Jie Liu, Xu-Hui Zhou
Rock and Soil Mechanics
It is of great significance for the safe construction of shale gas tunnels to deeply understand the evolution law of permeability of laminated shale with macro fractures under cyclic disturbance. The permeability evolution of shale specimens containing axial beddings and axial macro fractures under cyclic axial stress and cyclic confining pressure was experimentally studied using the GCTS rock mechanics testing system. The results show that the permeability of shale specimens containing axial beddings did not change significantly during the loading and unloading of axial stress, but it decreased in a negatively exponential form with the increasing confining pressure and increased …
Prediction Model Of Saturated/Unsaturated Permeability Coefficient Of Compacted Loess With Different Dry Densities, Hai-Man Wang, Wan-Kui Ni
Prediction Model Of Saturated/Unsaturated Permeability Coefficient Of Compacted Loess With Different Dry Densities, Hai-Man Wang, Wan-Kui Ni
Rock and Soil Mechanics
The direct measurement of unsaturated permeability coefficient is costly and the accuracy cannot be fully guaranteed. Therefore, the establishment of a simple and practical prediction model for saturated/unsaturated permeability coefficient based on Darcy’s law has important theoretical and practical significance. In this paper, a self-made unsaturated permeability device was used to test the unsaturated permeability coefficient of Yan’an compacted loess with different dry densities, and the pore size distribution curve was determined by nuclear magnetic resonance technology. Based on the characteristics of pore distribution, Darcy’s theorem is differentiated, and the relationship model between pore ratio and saturated/unsaturated permeability coefficient is …