Crushed gangue

Compaction characteristics and energy dissipation of crushed

The compressive characteristics of crushed gangue with different particle sizes as shown in Fig 5 The crushed gangue with a small particle diameter (0–10 mm) resists compressive deformation most effectively among the four particle gradations Since the porosity of gangue increases with the particle size, the compaction 展开2023年4月3日  This study conducted confined compaction tests on crushed gangue under different water conditions, analyzed the compaction deformation characteristics of the gangue samples and the particle crushing characteristics Experimental Study on Confined Compaction 2024年2月20日  The effect of particle size on the recrushing characteristics of different lithological caving crushed gangues in mine goaf is investigated in this study based on an Study of the Internal Rebreaking Characteristics of Crushed 2024年2月28日  In the current research, a large number of studies have been carried out on the compressive macroscopic deformation characteristics of crushed gangue, and its research Study on the macro–micro evolution of compaction Nature

Compressive deformation and energy dissipation of crushed coal

2016年9月1日  Three stages of compressive deformation for crushed gangue is found • The energy density of crushed gangue increases nonlinearly as the strain increases • The 2023年3月18日  Li et al (2021) studied the deformation behaviour of crushed gangue materials with different particle sizes under lateral cyclic loading using a selfdeveloped compression Stiffness of gangue backfilling body in goaf and its influence 2022年5月5日  This study reveals the internal mechanism of macro deformation of crushed gangue under the triaxial compression from the perspective of the mesoscopic fabric evolutionMicroscopic fabric evolution and macroscopic deformation 2023年6月5日  Compaction properties of the backfill body are the key to reveal the law of roof subsidence and illustrate the mechanism of ground pressure control with gangue backfill paction characteristics and energy dissipation of

Experimental Investigation of the Compaction

2022年12月28日  To study the recrushing characteristics of graded crushed gangue, the use of selfdesigned crushed rock axial compression test system, from the gangue recrushing particle size gradation and its fractal distribution In this research, the deformation, particle crushing, and morphology evolution of saturated crushed gangue under variable axial stresses (0, 2, 4, 8, 12, 16, and 20 MPa) were Particle Crushing and Morphology Evolution of Saturated Crushed 2016年9月1日  Crushed gangue, an inhomogeneous and discontinuous medium, is accompanied with the absorption and dissipation of energy under compression In order to study the compressive deformation and energy dissipation of gangue in the loading process under conditions of different particle sizes, loading rates, and firsttime stress loads, a SANS testing Compressive deformation and energy dissipation of crushed coal gangue 2020年6月20日  Coal mining causes serious ecological and environmental damage The crushed gangue is backfilled into underground goaf, which not only inhibits mininginduced subsidence but also reduces accumulation of waste on the ground: however, the effects of backfilling with gangue backfill materials in goaf are affected by a combination of multiple factors To predict Prediction of compression and deformation behaviours of gangue

Study on the macro–micro evolution of compaction Nature

2024年2月28日  At this point, the crushed gangue has been transformed into a continuous medium, similar to a complete rock, this stage requires the application of large axial pressure to produce deformationThe main reasons for the compression of saturated crushed gangue were as follows: (1) Under the action of the axial loading, gangue particles overcame the frictional resistance between particles This resulted in sliding and rolling to a more stable position; hence, it led to a reduction in the void volume (2) Gangue particles were brokenParticle Crushing and Morphology Evolution of Saturated Crushed Gangue 2022年5月5日  In the process of coal mining, the discharge of crushed gangue accounts for 15–20% of coal output At present, the crushed gangue accumulated on the ground of mining areas in China has exceeded Microscopic fabric evolution and macroscopic deformation 2021年5月1日  When crushed gangue samples are loaded to ε = 04, for crushed gangue sample containing the single knifeshaped blocks, there is no significant “active triangle area” in the lateral displacement of the block, and there is the large lateral displacement of the sample from the top to the bottom; For crushed gangue samples containing the Influence of block shape on macroscopic deformation response and meso

Compaction characteristics and energy dissipation of crushed gangue

dissipation of crushed gangue under actual mining stress Authors consider the actual mining stress state in goaf to design the experiments depending on the background of gangue backll in the Renjiazhuang Coal Mine The energy dissipation of crushed gangue was also analyzed, because gangue backfill controls the dynamic pressure through the2019年2月1日  The change rules of crushing ratio and newly added fine particle content with the cyclic loading times were similar This is due to that the crushing forms of the gangue block in CGPM samples are mainly edges fracture and corners fracture In this two crushing forms, gangue blocks in CGPM are mostly crushed into fine particles (0–10 mm)Characterizations of macroscopic deformation and particle 2023年6月5日  Crushed gangue models were made by gangue block containing single shape blocks or mixedshape blocks The influence of block shape on the macro deformation response and mesofabric evolution of Compaction characteristics and energy dissipation of crushed gangue 2024年1月24日  The explosion scene in gob was simplified and the position of the crushed gangue from the ignition source was set to 05 m, the actual setup is shown in Fig 3The gangue used in the experiments Study on the propagation characteristics of methaneair Nature

Effects of particle size of crushed gangue backfill materials on

2017年8月30日  In recent years, solid waste backfill mining has developed rapidly and widely used to control surface subsidence and reduce accumulation of solid waste As crushed materials are used to backfill goafs, the particle size of backfill materials becomes a key factor influencing the control of surface subsidence To analyse the influences of particle size of backfill 2020年5月11日  The crushed gangue materials which are filled into the goaf in solidbackfilling coal mining become the main body of bearing the overburden after the tamping processExperimental Study on Acoustic Emission of 2016年4月1日  Crushed gangue, an inhomogeneous and discontinuous medium, is accompanied with the absorption and dissipation of energy under compression In order to study the compressive deformation and energy Compressive deformation and energy dissipation of crushed coal gangue 2022年12月28日  The compaction and recrushing characteristics of crushed gangue are important factors which affect the quality and effectiveness of the filling of the quarry To study the compaction and recrushing characteristics of the gangue particles, continuous grading and intermittent grading of two different structures were designed to study the bulk gangue particle Experimental Investigation of the CompactionCrushing MDPI

(PDF) Effects of Water Immersion on the LongTerm Bearing

2021年3月12日  To study the longterm bearing characteristics of crushed gangue in goaf under water immersion conditions, the creep test of the crushed gangue in the water immersion state was performed by using 2021年2月1日  Crushed gangue models were made by gangue block containing single shape blocks or mixedshape blocks The influence of block shape on the macro deformation response and mesofabric evolution of Influence of block shape on macroscopic deformation response and meso 2019年2月1日  An equation for predicting stressstrain relationship during compressioninduced deformation of gangue backfill materials under multifactor coupling effects was established and shows that this equation can predict compression induced deformation in goaf, beneficial to providing a basis for predicting strata movement and surface subsidence and guidance for Characterizations of macroscopic deformation and particle 2019年2月1日  In solid backfilling coal mining (SBCM), the deformation resistance of crushed gangue particle material (CGPM) is critical for controlling overburden strata movement and ground surface subsidenceIn engineering practice, CGPM is generally circularly compacted first by the compaction machine to reduce its compressibilityHowever, a systematic approach to guide Characterizations of macroscopic deformation and particle crushing

Stiffness of gangue backfilling body in goaf and its influence

2023年3月18日  Li et al studied the deformation behaviour of crushed gangue materials with different particle sizes under lateral cyclic loading using a selfdeveloped compression simulation platform for solid backfilling materials and compared and discussed the axial compressive characteristics of crushed gangue with and without lateral cyclic loading2024年2月20日  The crushed particle size came from the complete caved zone gangue in the longwall goaf of a mine The maximum thickness of the caved zone was about 20 m, and theStudy of the Internal Rebreaking Characteristics of Crushed Gangue DOI: 101016/jcscm2024e03263 Corpus ID: ; Influences of water filling timing on the deformation mechanism of crushed gangue in goaf @article{Lu2024InfluencesOW, title={Influences of water filling timing on the deformation mechanism of crushed gangue in goaf}, author={Yao Lu and Wei Lu and Changxiang Wang and Zhiqiang Wang and Baoliang Zhang Influences of water filling timing on the deformation mechanism 2024年7月2日  The creep characteristics and potential deformation patterns of gangue backfill material are crucial in backfill mining operations This study utilizes crushed gangue from the Gangue Yard in Fuxin Research on the bearing creep characteristics and constitutive

Fractal characteristics of crushed particles of coal gangue under

2017年1月1日  Results showed that the particle size distributions of crushed gangue specimens with two distinct lithology exhibited fractal characteristics Fractal dimension of each crushed specimen ranged from 0352 to 2654, with increase of stress, the particle size of each specimen tended to be distributed in a more dispersed fashion2023年6月1日  Compaction properties of the backfill body are the key to reveal the law of roof subsidence and illustrate the mechanism of ground pressure control with gangue backfill mining A rock mechanic testing machine and a selfdesigned steel cylinder were applied to conduct compaction experiments of gangue with different particle sizes, axial stresses, loading rates Compaction characteristics and energy dissipation of crushed gangue DOI: 101155/2021/ Corpus ID: ; Effects of Water Immersion on the LongTerm Bearing Characteristics of Crushed Gangue in Goaf @article{Jiang2021EffectsOW, title={Effects of Water Immersion on the LongTerm Bearing Characteristics of Crushed Gangue in Goaf}, author={Ning Jiang and Dawei Yin and Junbiao Ma and Liu Han and Haiyang Pan [PDF] Effects of Water Immersion on the LongTerm Bearing 2022年6月30日  Filling of gangue formed in coal mining is an effective means to realize green mining in coal mine The key of gangue filling mining is to accurately understand the breaking mechanism and pore evolution of gangue under load Therefore, in this paper, firstly, the yield criterion of granular materials based on radius of curvature and contact stress is built, which Breakage mechanism and pore evolution characteristics of gangue

Influences of water filling timing on the deformation mechanism

2024年7月1日  In the saturated crushed gangue compression test conducted by Yu et al [14], [31], it was observed that the larger the Talbol power index during the compression process of the sample, the greater the axial displacement of the sample, and the larger the increment of the fractal dimension after compression2023年4月3日  To study the deformation characteristics of crushed gangue under different water content conditions, the confined compaction test of crushed gangue was carried out under five different water Experimental Study on Confined Compaction Deformation of Crushed Gangue crushed gangue under di erent loading rates was designed, and the acoustic emission (AE) signal was monitored in the process of confined compressionExperimental Study on Acoustic Emission of Confined 2017年1月1日  The surface morphology of compacted and crushed gangue presents selfsimilarity and other fractal characteristics This research constructed a fractal model for the particle size of compacted and crushed gangue based on fractal theory and particle size distribution information To investigate the fractal characteristics of compacted gangue, Fractal characteristics of crushed particles of coal gangue under

Compressive deformation and energy dissipation of crushed coal gangue

2016年9月1日  Crushed gangue, an inhomogeneous and discontinuous medium, is accompanied with the absorption and dissipation of energy under compression In order to study the compressive deformation and energy dissipation of gangue in the loading process under conditions of different particle sizes, loading rates, and firsttime stress loads, a SANS testing 2020年6月20日  Coal mining causes serious ecological and environmental damage The crushed gangue is backfilled into underground goaf, which not only inhibits mininginduced subsidence but also reduces accumulation of waste on the ground: however, the effects of backfilling with gangue backfill materials in goaf are affected by a combination of multiple factors To predict Prediction of compression and deformation behaviours of gangue 2024年2月28日  At this point, the crushed gangue has been transformed into a continuous medium, similar to a complete rock, this stage requires the application of large axial pressure to produce deformationStudy on the macro–micro evolution of compaction NatureThe main reasons for the compression of saturated crushed gangue were as follows: (1) Under the action of the axial loading, gangue particles overcame the frictional resistance between particles This resulted in sliding and rolling to a more stable position; hence, it led to a reduction in the void volume (2) Gangue particles were brokenParticle Crushing and Morphology Evolution of Saturated Crushed Gangue

Microscopic fabric evolution and macroscopic deformation

2022年5月5日  In the process of coal mining, the discharge of crushed gangue accounts for 15–20% of coal output At present, the crushed gangue accumulated on the ground of mining areas in China has exceeded 2021年5月1日  When crushed gangue samples are loaded to ε = 04, for crushed gangue sample containing the single knifeshaped blocks, there is no significant “active triangle area” in the lateral displacement of the block, and there is the large lateral displacement of the sample from the top to the bottom; For crushed gangue samples containing the Influence of block shape on macroscopic deformation response and meso dissipation of crushed gangue under actual mining stress Authors consider the actual mining stress state in goaf to design the experiments depending on the background of gangue backll in the Renjiazhuang Coal Mine The energy dissipation of crushed gangue was also analyzed, because gangue backfill controls the dynamic pressure through theCompaction characteristics and energy dissipation of crushed gangue 2019年2月1日  The change rules of crushing ratio and newly added fine particle content with the cyclic loading times were similar This is due to that the crushing forms of the gangue block in CGPM samples are mainly edges fracture and corners fracture In this two crushing forms, gangue blocks in CGPM are mostly crushed into fine particles (0–10 mm)Characterizations of macroscopic deformation and particle

Compaction characteristics and energy dissipation of crushed gangue

2023年6月5日  Crushed gangue models were made by gangue block containing single shape blocks or mixedshape blocks The influence of block shape on the macro deformation response and mesofabric evolution of 2024年1月24日  The explosion scene in gob was simplified and the position of the crushed gangue from the ignition source was set to 05 m, the actual setup is shown in Fig 3The gangue used in the experiments Study on the propagation characteristics of methaneair Nature

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