The Porosity Dynamic Model of the Compacted Broken Coal
Joint Authors
Ma, Zhihui
Yang, Xinlei
Han, Xuefeng
Chu, Tingxiang
Chao, Jiangkun
Yu, Minggao
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-28
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
In order to study the dynamic change law of the porosity of the compacted broken coal under different axial stress loading, based on the environment of the broken and compacted coal in the gob, aiming at the influence of the porosity on the spontaneous combustion of the coal, combined with the fractal theory, the fractal model of the porosity of the broken coal is established.
A self-designed “testing device for permeability evolution and spontaneous combustion characteristics of crushed coal under pressure” is used to carry out axial loading test on selected coal samples in the gob.
By comparing and analyzing the calculated results of void dynamic evolution model and experimental data, it is found that the relative error of void dynamic evolution model is between 2.8% and 6.2%, which meets the engineering needs.
According to the stress-strain curve, initial accumulation state parameters, fractal dimension of initial crushing, and particle size distribution, the change of porosity under different compacted conditions can be predicted by the model, which has certain significance for identifying the change of compacted broken coal porosity and analyzing the process of coal spontaneous combustion and oxidation.
American Psychological Association (APA)
Han, Xuefeng& Chu, Tingxiang& Yu, Minggao& Chao, Jiangkun& Ma, Zhihui& Yang, Xinlei. 2020. The Porosity Dynamic Model of the Compacted Broken Coal. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1125218
Modern Language Association (MLA)
Han, Xuefeng…[et al.]. The Porosity Dynamic Model of the Compacted Broken Coal. Advances in Civil Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1125218
American Medical Association (AMA)
Han, Xuefeng& Chu, Tingxiang& Yu, Minggao& Chao, Jiangkun& Ma, Zhihui& Yang, Xinlei. The Porosity Dynamic Model of the Compacted Broken Coal. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1125218
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125218