Gangue block density

Influence of block shape on macroscopic deformation response and meso

2021年5月1日  Due to the sharp edges and corners, concaveconvex undulations and poor regularity of gangue blocks, the coordination structure of crushed gangue materials is 2022年5月5日  The main chemical composition of gangue is SiO 2, Al 2 O 3 etc, Containing alkali, alkaline earth metal, sulfide, organic matter etc, the density is 212 × 10 3 kg m −3 Microscopic fabric evolution and macroscopic deformation 2024年2月17日  The results indicate that the self–bearing process of gangue slurry can be divided into three stages: the rapid compression and drainage stage, the pore compaction and water bleeding stage, and the particle Study on the Self–Bearing Mechanism and 2022年8月1日  In engineering applications, crushed gangue has the advantages of high filling density, good compacting performance, high bearing capacity and wide distribution range In Accurate measurement and quantitative analysis of 3D shape

OPEN Microscopic fabric evolution and macroscopic

2023年12月4日  Deviatoric stress–strain curves of crushed gangue samples under diferent confining pressures earth metal, sulfide, organic matter etc, the density is 212 × 103 kg m−3 2017年10月1日  The irregular shape of gangue blocks will affect the coordination structure between blocks in the crushed gangue accumulation body, and then affect the engineering Numerical simulation study on macroscopic mechanical Gangue aggregate is an important factor affecting the strength of the backfill, except cement The wellgraded gangue aggregate shall be the aggregate with the minimum porosity and the Mechanical Properties and Deterioration Instability of Filling 2022年12月3日  In the research process, gangue blocks are represented by balls or artificially designed blocks with random shapes Instead of considering the real shapes of gangue The 3D reconstruction of a digital model for irregular

Compaction characteristics and energy dissipation of crushed gangue

2023年6月5日  The characteristics of stress–strain, fractal dimension and energy dissipation for crushed gangue were analyzed The stress–strain relationship of crushed gangue in the 2024年6月4日  The coal gangue contains calcium carbonate, pyrite, and various metal oxides, which can produce gas expansion material at high temperatures and form porous light aggregate At present, the ceramsite of coal gangue fired by rotary kiln has the advantages of low density, high strength, high softening coefficient, and good frost resistanceCharacteristics of Coal Gangue and Present Situation and 2022年8月1日  Through a series of tests and analysis, the conclusions are summarized as follows: (1) the sensitivity (S) of different shape indexes of gangue blocks in characterizing the real shape of gangue block is different, and S elongation > S flakiness > S sphericity; the average elongation, flakiness and sphericity of a random gangue block is about 1 Accurate measurement and quantitative analysis of 3D shape 2024年11月7日  Existing research has found that the number, insertion depth and angle, filling rate, and working fluid of heat pipe (HP) can affect the distribution of temperature field inside coal gangue dumpsInfluence of heat pipe layout parameters on the cooling

Density Mass Volume PhET Interactive Simulations

1 天前  Why do some materials like wood float in water, and others don’t? Interact with blocks of different materials, including a custom option by modifying their mass and volume, to explore the effect on the density and discover the conditions for sinking or floating in water Play detective to determine the material of each block by comparing its density with the values in the table2024年2月15日  To address the lightweight and realtime issues of coal sorting detection, an intelligent detection method for coal and gangue, Ourv8, was proposed based on improved YOLOv8 Images of coal and gangue with different densities under two diverse lighting environments were collected Then the Laplacian image enhancement algorithm was Detection of Coal and Gangue Based on Improved YOLOv82022年3月1日  The higher the density of the gangue block, the more obvious the peak The above results show that there is a significant difference between the gray value of voids and gangue matrix in CT images As long as a reasonable gray threshold is found, voids and gangue matrix can be effectively separatedTransparent characterization and quantitative analysis of broken gangue 2021年8月15日  Discrete element calculations of the topcoal drawing process for different ganguecoal density ratios were conducted to investigate the effect of the ganguecoal density ratio on the drawing Numerical and theoretical investigation of the effect of the gangue

Influence of block shape on macroscopic deformation response and meso

2021年5月1日  The research process includes CT scanning test of the external contour of the randomly selected gangue block, reconstruction of 3D model of real shape of gangue block, acquisition and classification of 3D shape parameters of gangue block, construction of particle flow numerical model of crushed gangue with different block shapes under the triaxial 2022年5月5日  Lateral movement evolution law of block of crushed gangue under triaxial compression The lateral movement of the blocks in the crushed gangue are obtained considering various strain states at σ Microscopic fabric evolution and macroscopic deformation 2022年4月13日  Abstract Discrete element calculations of the topcoal drawing process for different ganguecoal density ratios were conducted to investigate the effect of the ganguecoal density ratio on the Numerical and theoretical investigations of the effect of the gangue 2022年12月3日  First, the gangu e is cut t o obtain a pla ne ; put the c ut gangue block on the Acc ording to the me asureme nt, the gangue density of the mine is about 2642kg / m3, and the utilizationStudy on Micromechanical Properties of Gangue Particle

Accurate measurement and quantitative analysis of 3D shape

2022年8月1日  Taking the 10# gangue block as an example, the elongation index and the flakiness index of this gangue block are 1634 and 0849, respectively, which are close to the values obtained with manual 2021年8月19日  31 3D reconstruction and interface program optimization for the real shape of gangue blocks 311 CT image preprocessing Due to the limitation of experimental equipment and measurement means, the CT scanning section needed to be preprocessed before the gangue block reconstruction in the MIMICS softwareThe 3D reconstruction of a digital model for irregular gangue 2024年1月18日  After the coal gangue is ground, it can be used in gangue brick making, cement manufacturing, lightweight aggregate production, coal gangue block building, etc Coal gangue brick making The gangue brickmaking process is the same as the clay brickmaking process, which mainly includes preparing, shaping, drying, and baking raw materialsCoal Gangue: Composition, Processing, Use And Recycling2021年2月1日  Request PDF Influence of block shape on macroscopic deformation response and mesofabric evolution of crushed gangue under the triaxial compression Due to the sharp edges and corners, concave Influence of block shape on macroscopic deformation response and meso

Coal and Gangue Detection Networks with Compact and

2024年11月16日  The efficient separation of coal and gangue remains a critical challenge in modern coal mining, directly impacting energy efficiency, environmental protection, and sustainable development Current machine visionbased sorting methods face significant challenges in dense scenes, where label rewriting problems severely affect model 2018年11月30日  A fired heatinsulation hollow block, which has approximate dimensions of 240 mm (L) × 200 mm (W) × 190 mm (H) and a density of 850 kg/m³, is a new type of wall material made from shale and Mechanical properties of a new type of block made from2022年5月3日  Discrete element calculations of the topcoal drawing process for different ganguecoal density ratios were conducted to investigate the effect of the ganguecoal density ratio on the drawing mechanism in longwall topcoal caving The effects were analyzed for the drawing body, the topcoal boundary, and the recovery of top coal The results show that for Numerical and theoretical investigations of the effect of the gangue 2024年6月27日  Coal gangue is a solid waste, which can cause serious pollution of the atmosphere and water sources due to its longterm accumulation In this article, the influence of CO2cured coal gangue on the slump flow, the mechanical strengths, the thermal conductivity coefficient, the chloride ion permeability, the water resistance coefficient and the leached Pb of The Influence of CO2 Curing on the Properties of Coal Gangue

Mesoscopic influence mechanism of particle fragmentation

2024年10月1日  The coal gangue was taken from Xin'an Coal Mine in Luoyang, Henan Province The lithology of the gangue was sandstone, and the average density of the gangue was 1369 × 10 3 kg/m 3, with an average uniaxial compressive strength of 3803 MPaTo reduce the impact of boundary effects on the results (He et al, 2022), the larger gangue particles were crushed 2023年3月18日  To study the influence mechanism of gangue backfilling material (GBM) with different particle sizes on overburden deformation, the particle movement characteristics and the mechanism of stiffness difference with different particle sizes of GBM were analysed by physical compression and particle flow numerical simulations Then, combined with a similar material Stiffness of gangue backfilling body in goaf and its influence 2024年6月27日  The foam and the straw fibers show delaying temperature changes in a coalgangueblock cabin model, while when CO2cured coal gangue is added, the effect is the opposite(PDF) The Influence of CO2 Curing on the Properties of Coal Gangue 2024年1月1日  The test block is then removed and put to the test once its surface temperature has cooled to room temperature Download: Download highres image (200KB) Download: Download fullsize image; Fig 2 Furnace heatingup curve The thermal density of coal gangue concrete decreases, mass loss rises, and the surface crack width of coal gangue Effect of temperature on thermal properties and residual

Numerical and theoretical investigations of the effect of

2022年8月12日  Furthermore, the density of noncoal ore is 22–47 g/ cm3, and the density of magmatic rock is about 22–62 g/ cm3 Thus, in coal mines, the density of coal is generally lower than that of the gangue, while in metal mines, the density of the ore is generally higher than that of the rock Due to the dierences in particle densities for a 2024年9月11日  density and porosity of the gangue specimen were 2800 kg/m and 03 The stress, strain, force chain ,and fracture evolution during compaction were recorded in real time by theStudy on MacroMeso Deformation Law and Acoustic 2018年7月23日  In the previously reported paper 2,4,11,13, the density of carbonized carbon block from MCMBs without binder was reported to be over 17 g/cm 3, and the flexural strength was noted to be about 90 Improving the mechanical properties of a high density carbon block 2022年6月1日  Five experimental materials were coal gangue, fly ash, desulfurization gypsum, gasification slag, and bottom slag In the experiment, the trigeminy die (7007 × 7007 × 7007) is used to make the test block The bulk density of the mixed raw material is 16 t/m3 Thus, the total mass of slurry is 2,195 g, theFluidity Influencing Factor Analysis and Ratio

Study on Permeability Performance and Prediction Model of Coal Gangue

2024年8月2日  where α is the correction factor for the amount of coarse aggregates, a dimensionless parameter, taken as 098; ρ G is the closely packed density of coal gangue coarse aggregates (kg/m 3)The mix designs for each group of CGPC, calculated using Formulas and (), are shown in Table 3The HJW60 concrete mixer is used to prepare CGPC in the experiment2024年11月7日  The test block was immersed in water at 20 ± 2 °C, the lower part was padded with 10 mmdiameter steel bars, and the water surface was 30 mm above the top surface of the test blockInfluence of the mass percentage of binders on the As a new building material, sintered coal gangue selfinsulation block can not only make efficient use of industrial waste but also have a stronger heat preservation effectBulk density, apparent density and breakage ratio (inset) 2024年6月4日  The coal gangue contains calcium carbonate, pyrite, and various metal oxides, which can produce gas expansion material at high temperatures and form porous light aggregate At present, the ceramsite of coal gangue fired by rotary kiln has the advantages of low density, high strength, high softening coefficient, and good frost resistanceCharacteristics of Coal Gangue and Present Situation and

Accurate measurement and quantitative analysis of 3D shape

2022年8月1日  Through a series of tests and analysis, the conclusions are summarized as follows: (1) the sensitivity (S) of different shape indexes of gangue blocks in characterizing the real shape of gangue block is different, and S elongation > S flakiness > S sphericity; the average elongation, flakiness and sphericity of a random gangue block is about 1 2024年11月7日  Existing research has found that the number, insertion depth and angle, filling rate, and working fluid of heat pipe (HP) can affect the distribution of temperature field inside coal gangue dumpsInfluence of heat pipe layout parameters on the cooling 1 天前  Why do some materials like wood float in water, and others don’t? Interact with blocks of different materials, including a custom option by modifying their mass and volume, to explore the effect on the density and discover the conditions for sinking or floating in water Play detective to determine the material of each block by comparing its density with the values in the tableDensity Mass Volume PhET Interactive Simulations2024年2月15日  To address the lightweight and realtime issues of coal sorting detection, an intelligent detection method for coal and gangue, Ourv8, was proposed based on improved YOLOv8 Images of coal and gangue with different densities under two diverse lighting environments were collected Then the Laplacian image enhancement algorithm was Detection of Coal and Gangue Based on Improved YOLOv8

Transparent characterization and quantitative analysis of broken gangue

2022年3月1日  The higher the density of the gangue block, the more obvious the peak The above results show that there is a significant difference between the gray value of voids and gangue matrix in CT images As long as a reasonable gray threshold is found, voids and gangue matrix can be effectively separated2021年8月15日  Discrete element calculations of the topcoal drawing process for different ganguecoal density ratios were conducted to investigate the effect of the ganguecoal density ratio on the drawing Numerical and theoretical investigation of the effect of the gangue 2021年5月1日  The research process includes CT scanning test of the external contour of the randomly selected gangue block, reconstruction of 3D model of real shape of gangue block, acquisition and classification of 3D shape parameters of gangue block, construction of particle flow numerical model of crushed gangue with different block shapes under the triaxial Influence of block shape on macroscopic deformation response and meso 2022年5月5日  Lateral movement evolution law of block of crushed gangue under triaxial compression The lateral movement of the blocks in the crushed gangue are obtained considering various strain states at σ Microscopic fabric evolution and macroscopic deformation

Numerical and theoretical investigations of the effect of the gangue

2022年4月13日  Abstract Discrete element calculations of the topcoal drawing process for different ganguecoal density ratios were conducted to investigate the effect of the ganguecoal density ratio on the

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