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Keywords: particle
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Proceedings Papers
Experimental Study of Rock Breaking Effect of Long Cylindrical Charge in Infinite Environment
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Paper presented at the ISRM Regional Symposium - 12th Asian Rock Mechanics Symposium, November 22–26, 2022
Paper Number: ISRM-ARMS12-2022-018
... Excel software allows us to establish experimental rules of particle size distribution according to the distance from the axis of long cylindrical charge and experimental rules on the distribution of rock particle size in the broken volume by the method of least squares. The research results...
Proceedings Papers
Experimental Procedures to Determine Porosity-Height Relationship of Mine Overburden Dump
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Paper presented at the ISRM Regional Symposium - 12th Asian Rock Mechanics Symposium, November 22–26, 2022
Paper Number: ISRM-ARMS12-2022-022
... dumps (Fig. 1). The earth materials are heterogeneous and loose geomaterials that consist of particles varying widely in sizes, ranging from boulder to clay (Gao et al., 2017; Shrivastava et al., 2021). The dump materials are stacked into layers in the nearby areas, and management of these dumps...
Proceedings Papers
An Attempt on the Application of the Gradient Particle Size Discrete Element Specimen in Rock Engineering
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-314
... Abstract The discrete element method is widely used in rock mechanics, but its computational efficiency limits its development. To improve the accuracy of a discrete element model, the particle size of the entire model needs to be decreased according to the current theory. However, only...
Proceedings Papers
Discrete Element Modeling of the Effect of Particle Size Distribution on Direct Shear Behavior of Hydrate-Bearing Sediments
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-329
... widely in marine sediments which have different types of sediment matrix with different particle size distributions (PSD). The effect of the PSD of hydrate-bearing sediments has not been investigated clearly. In this paper, a direct shear test model of HBS is built using the discrete element method...
Proceedings Papers
Application of the Four-Dimensional Lattice Spring Model in Direct Shear Testing of Intact Rock
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-326
... modeling of the rock strength. geologist reservoir characterization particle engineering geology geological subdiscipline rock mechanic reservoir geomechanics simulation deformation international journal experiment rock engineering mechanism stiffness society iop publishing iop conf...
Proceedings Papers
Study on Shear Performance of Cotton Straw Fiber Reinforced Mud Soil Under Freeze-Thaw Cycle
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-380
... is destroyed, the pores and cracks become more, by which the connection between the fibers and soil particles decreases, resulting in a decline in the soil's shear strength. 1. Introduction Adding fibers into soil is a common method of soil reinforcement, which involves mixing fibers into the soil...
Proceedings Papers
Study on the Influence of Different Discrete Forms of DDA Block on Mechanical Properties of Coarse Granular Material
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-402
... Abstract In the triaxial compression test of soil engineering, particle breakage may occur under the double action of axial and lateral loads. So, for the DDA simulation, the internal discretization of DDA block should be carried out at first. However, different discretization may affect...
Proceedings Papers
Development of a Random Particle Generator for the Distinct Lattice Spring Model
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-450
... Abstract Particles in a regular arrangement will always be simplistically used in the discrete numerical analysis to represent materials ranging from steels to geomaterials (e.g., rock and concrete). As for those heterogeneous materials, this simplification violates reality more or less...
Proceedings Papers
CFD-DEM Study on the Entrainment Induced by Debris Flows with the HBP Rheological Model
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-435
... that are able to entrain a great number of masses tend to be the most catastrophic. A fully coupled CFD-DEM technique is utilised here to evaluate the erosion effect of debris flow on the sand basal, in which basal is modelled via a non-cohesive particle assembly using DEM and debris flows are recognised...
Proceedings Papers
Effect of Meso-Structure on Thermal Conductivity of Deep Granite
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-427
... and meso-structure of rocks on thermal conductivity was discussed. The results show that the denseness, porosity, pore size distribution, the way of connection, quartz content between mineral particles and the degree of claying directly will affect the thermal conductivity of rock, among which...
Proceedings Papers
Study on the Engineering Characteristics and Microstructures of Different Types of Soft Clay
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-417
... and environmental hazards [4,5] . society iop publishing iop conf structural geology drilling fluids and materials phyllosilicate lacustrine environment sedimentology depositional environment drilling fluid management & disposal particle environmental science 861 conference engineering...
Proceedings Papers
DEM Investigation of the Creep Behavior of Methane Hydrate-Bearing Sand
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-444
... particle strength geology hydrate dem investigation geological subdiscipline geologist reservoir geomechanics environmental science 861 society iop publishing iop conf methane hydrate dem simulation breakage stiffness flow assurance creep conference boundary particle...
Proceedings Papers
Dynamic Analyses of High-Position Long-Runout Landslide in Shuicheng, Guizhou, China: Perspectives from Overloading Erosion Effect
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-432
... china province particle rock type geological subdiscipline guizhou long-runout landslide shuicheng 11th Conference of Asian Rock Mechanics Society IOP Publishing IOP Conf. Series: Earth and Environmental Science 861 (2021) 062015 doi:10.1088/1755-1315/861/6/062015 Dynamic analyses of high...
Proceedings Papers
Experimental and Numerical Investigation for the Rupture Problem of a Tunnel Subjected to Strike-Slip Fault
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-058
... geologist structural geology geological subdiscipline fracture characterization reservoir characterization mathematics of computing strike-slip fault tunnel liner environmental science 861 particle society iop publishing iop conf dimension conference underground space technology...
Proceedings Papers
Numerical Study on Seepage Characteristics of Hydrate-Bearing Sediments: A Pore-Scale Perspective
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-111
... mathematics of computing fluid dynamics hydrate hydrate saturation particle society iop publishing iop conf conference seepage characteristic flow in porous media sediment environmental science 861 permeability hydrate particle flow assurance hbss hydrate-bearing sediment...
Proceedings Papers
Contribution of Air Velocity to the Particle Deposition Characteristics on the Air Side of Air Cooler Exposed to Warm, Humid, and Solid Loaded Air Streams Under Deep Coal Mine
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-121
... to serious fouling on the air-side tubes. However, the particle deposition characteristics on the tubes in the hot, humid, and solid loaded environment were unclarified. Therefore, in this study, experimental and theoretical analyses were performed to clarify the. The results indicated the following. (1...
Proceedings Papers
Construction and Application of High-Strength Flexible Cement Sheath for Deep and Ultra-Deep Shale Gas Cementing
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-078
... has far-reaching significance for the development of deep shale gas resources [1]. cement sheath geologist sedimentary rock clastic rock cement chemistry rock type wellbore design geology mudrock hydraulic fracturing wellbore integrity mudstone particle conference reservoir...
Proceedings Papers
Deformability of Polydisperse Granular Materials: The Effect of Size Span and Shape of Grain Size Distribution
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-130
... Abstract This paper investigates the effect of the grain size distribution (GSD) on deformability of spherical particle assemblies using the distinct element method. The GSD is modeled by a normalized beta function, which allows variation of the size span (nearly monodisperse to highly...
Proceedings Papers
Water-Induced Variations in Micro Characteristics of Clay-Bearing Conglomerates at Great Depths in China
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-109
... between the conglomerate samples and water. The mixed layer of chlorite/montmorillonite expanded, spread, and flocculated after water absorption, jammed the pores, and reduced the porosity. A certain number of calcite particles formed on the surface of grains or surrounded the micro-pores, resulting...
Proceedings Papers
Fluid Induced Deformation in Porous Media — Sensitivity Analysis of a Poroelastic Model
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-191
... of the material which reflects as the change in porosity due to particle rearrangement. This phenomenon results in fluid induced instabilities in the porous media which is commonly observed during CO 2 sequestration, oil and hydrocarbon recovery, high pressure grouting, hydraulic fracturing. Solid-fluid...
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