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Reconstruction of 3D Micro Pore Structure of Coal and Simulation of Its Mechanical Properties
Joint Authors
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-13
Country of Publication
Egypt
No. of Pages
9
Abstract EN
This article takes the low permeability coal seam in the coalfield of South Judger Basin in Xinjiang, as a research object.
The pore structure characteristics of coal rock mass in low permeability coal seam were analyzed quantitatively using scanning electron microscopy (SEM) through the methods of statistics and digital image analysis.
Based on the pore structure parameters and the distribution function of the coal rock mass, a three-dimensional porous cylinder model with different porosity was reconstructed by FLAC3D.
The numerical simulation study of reconstructed pore model shows that (1) the porosity and the compressive strength have obvious nonlinear relation and satisfy the negative exponential relation; (2) the porosity significantly affects the stress distribution; with the increase of micro porosity, the stress distribution becomes nonuniform; (3) the compressive failures of different models are mainly shear failures, and the shape of fracture section is related to porosity; (4) the variation of seepage coefficient of the pore reconstruction model is consistent with the development of micro cracks.
The micro mechanism of the deformation and failure of coal and the interaction of multiphase flow with porosity are revealed, which provides a theoretical reference for the clean development of the low permeability coal seam.
American Psychological Association (APA)
Deng, Guang-zhe& Zheng, Rui. 2017. Reconstruction of 3D Micro Pore Structure of Coal and Simulation of Its Mechanical Properties. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1124275
Modern Language Association (MLA)
Deng, Guang-zhe& Zheng, Rui. Reconstruction of 3D Micro Pore Structure of Coal and Simulation of Its Mechanical Properties. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1124275
American Medical Association (AMA)
Deng, Guang-zhe& Zheng, Rui. Reconstruction of 3D Micro Pore Structure of Coal and Simulation of Its Mechanical Properties. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1124275
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124275