A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LNMR Study on Microstructure Characteristics and Pore Size Distribution of High-Rank Coals with Different Bedding
In order to study the pore structure characteristics of high-rank coals with different bedding, NMR experiments were carried out for high-rank coals with different bedding angles (0°, 30°, 45°, 60°, and 90°). The results show that the distribution of T2 map of high-rank coal with different bedding is similar to some extent, showing a double peak or triple peak distribution, and the first peak accounts for more than 97% of the total, indicating that small holes are developed in high-rank coal with different bedding, while macropores are not developed. The influence of bedding angle on the fracture proportion is less than 0.3%. Compared with the fracture proportion, the effect of bedding angle on the proportion of microhole, medium hole, and large hole is greater and presents a certain rule. There are certain differences in T2 cutoff value (T2C) of high-rank coal with different bedding. The relationship between bedding angle and T2C conforms to exponential function, and the correlation degree R2 is 0.839. The research results provide a theoretical basis for gas extraction and utilization and prevention of gas disaster in coal mines in China.
LNMR Study on Microstructure Characteristics and Pore Size Distribution of High-Rank Coals with Different Bedding
In order to study the pore structure characteristics of high-rank coals with different bedding, NMR experiments were carried out for high-rank coals with different bedding angles (0°, 30°, 45°, 60°, and 90°). The results show that the distribution of T2 map of high-rank coal with different bedding is similar to some extent, showing a double peak or triple peak distribution, and the first peak accounts for more than 97% of the total, indicating that small holes are developed in high-rank coal with different bedding, while macropores are not developed. The influence of bedding angle on the fracture proportion is less than 0.3%. Compared with the fracture proportion, the effect of bedding angle on the proportion of microhole, medium hole, and large hole is greater and presents a certain rule. There are certain differences in T2 cutoff value (T2C) of high-rank coal with different bedding. The relationship between bedding angle and T2C conforms to exponential function, and the correlation degree R2 is 0.839. The research results provide a theoretical basis for gas extraction and utilization and prevention of gas disaster in coal mines in China.
LNMR Study on Microstructure Characteristics and Pore Size Distribution of High-Rank Coals with Different Bedding
Jiajia Liu (author) / Jianmin Hu (author) / Mengqi Shen (author) / Ming Yang (author) / Yingxiang Fang (author)
2021
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Study on Surface Modification of Different Rank Coals by Using FTIR
| British Library Online Contents | 2001
| Engineering Index Backfile | 1954
Characteristics of Fundamental Combustion and NOx Emission Using Various Rank Coals
| Taylor & Francis Verlag | 2011
A Simulation of Bedding Pore-Water Pressure Diffusion in Tongjiezi Reservoir
| British Library Conference Proceedings | 2002