Study on characteristics of three-dimensional granular meso-reconstruction of coal gangue roadbed
Zhi Sun 4,2
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School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
China State Construction Engineering Co., Ltd., Beijing, China
Shandong Transportation Research Institute, Jinan, Shandong, China
China Construction Infrastructure Co., Ltd., Beijing, China
Bing Hui   

Shandong Transportation Research Institute, Jinan, 250102, China
Submission date: 2022-02-15
Final revision date: 2022-04-18
Acceptance date: 2022-04-22
Online publication date: 2022-06-11
Publication date: 2022-07-30
Journal of Theoretical and Applied Mechanics 2022;60(3):361–374
The dynamic evolution process of the coal gangue particles’ core retention phenomenon in the process of crushing under stress, the evolution law of grading and the corresponding microscopic mechanical characteristics after continuous particle crushing are analyzed. The meso-level which reveals deformation phenomena of granular materials under the action of external loads is highly complex. At the qualitative level, the static compaction process of coal gangue samples can be roughly divided into three stages: initial compaction stage, compaction and crushing stage, and crushing (compaction) stage. It is proved that the interaction of lateral confined unidirectional compression of granular materials is mainly compression.
Bai Q.S., Tu S.H., Zhang C., 2016, DEM investigation of the fracture mechanism of rock disc containing hole(s) and its influence on tensile strength, Theoretical and Applied Fracture Mechanics, 86, 197-216.
Bian K., Chen Y.A., Liu J., Cui D.S., Li Y.R., Liang W.D., Han X., 2020, The un-loading failure characteristics of shale under different water absorption time using the PFC numerical method, Rock and Soil Mechanics, 41, 1, 355-367.
Chen P.Y., 2018, Loading rate effect analysis on rock particle flow model under uniaxial compression, Chinese Journal of Under-Ground Space and Engineering, 14, 3, 635-642.
Cong Y.,Wang Z.Q., Zheng Y.R., Feng X., 2015, Experimental study on microscopic parameters of brittle materials based on particle flow theory, Chinese Journal of Geotechnical Engineering, 37, 6, 1031-1040.
Editorial Department of China Journal of Highway and Transport, 2021, Review on China’s Subgrade Engineering Research, China Journal of Highway and Transport, 34, 3, 1-49.
Fu R., Hu X.L., Zhou B., Wang H., Wang J., 2018, A quantitative characterization method of 3D morphology of sand particles, Rock and Soil Mechanics, 39, 2, 483-490.
Lei T., Xia L., Wang Q.L., et al., 2017, A new method to simulate the layered rock mass and the numerical analysis, Science Technology and Engineering, 17, 2, 256-26.
Li Y., She C.X., 2018, Numerical simulation of effect of size on crushing strength of rock fill grains using particle flow code, Rock and Soil Mechanics, 39, 8, 2951-2959.
Wang G., Zha J.J., Wei X., 2019, Evolution of particle crushing of carbonate sands under cyclic triaxial stress path, Chinese Journal of Geotechnical Engineering, 41, 4, 755-760.
Wang M.L., 2013, Simulation of compression test on gangue by PFC3D, Chinese Journal of Rock Mechanics and Engineering, 32, 7, 1350-1357.
Wu Y.D., Luo R.P.,Wang W.C., 2015, DEM simulation on Nanjing sand-gravel-cobble mixture compaction characteristics, China Journal of Highway and Transport, 28, 4, 13-18.
Xu K., Zhou W., Ma G., Chang X., 2018, Review of particle breakage simulation based on DEM, Chinese Journal of Geotechnical Engineering, 40, 5, 880-889.
Xue L., Wang R., Zhang J.M., 2018, DEM numerical test method for granular matter under complex 3D loading, Rock and Soil Mechanics, 39, 12, 4681-4690.
Yan Z.Y., Wang Z.H., Chen E.L., et al., 2019, Dynamic response analysis of vehicle-load on asphalt pavement based on discrete element method, China Journal of Highway and Transport, 32, 9, 51-60.
Yu J., Li Y.H., Wang K.Z., 2017, Particle flow simulation of zonal disintegration in deep tunnel surrounding rock, Chinese Earthquake Engineering Journal, 39, 4, 759-766.
Zhang C., Tu S.H., Zhao Y.X., 2019, Compaction characteristics of the caving zone in a long wall goaf: a review, Environmental Earth Sciences, 78, 1, 27-46.
Zhang X.P., Jiang Y.J., Wang G., Wang J., 2016, Numerical experiments on rate-dependent behaviors of granite based on particle discrete element model, Rock and Soil Mechanics, 37, 9, 2679-2686.
Zhao G.Y., Dai B., Dong L.J., Yang L., 2015, Experimental research on mechanical characteristics and strength criterion of rock of triaxial unloading tests under different stress paths, Rock and Soil Mechanics, 36, 11, 3121-3127.
Zhou M.J., Song E.X., 2016, Particle flow simulations of the compaction of filling materials in highly filled found action with analyses of the transverse isotropy, Journal of Tsinghua University (Science and Technology), 56, 12, 1312-1319.
Zhu D.F., Tu S.H., Yuan Y., Ma H., Li X., 2018, An approach to determine the compaction characteristics of fractured rock by 3D discrete element method, Rock and Soil Mechanics, 39, 3, 1047-1055.