Study on the evolution law of physical properties of soft coal seams under different water immersion time

Autor:	Rui-Feng Tang, Jing Xie, Ying-Wei Wang, Man Wang, You-Chang Lv, Xin-Kai Li, Jin-Hong Hu, Ming-Yao Wang
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	coal nuclear magnetic resonance Renewable Energy Sustainability and the Environment otorhinolaryngologic diseases technology industry and agriculture TJ1-1570 immersion time Mechanical engineering and machinery respiratory system micro-structure complex mixtures respiratory tract diseases
Zdroj:	Thermal Science, Vol 25, Iss 6 Part B, Pp 4515-4525 (2021)
ISSN:	2334-7163 0354-9836
Popis:	Aiming at the problems of easy spalling and roof fall in the soft coal seam under the influence of strong deep mining, the 31020 working face of Pingdingshan No.12 coal mine is used as the engineering background, combined with nuclear magnetic resonance, etc. Various technical methods have carried out research on the water absorption characteristics, composition, micro-structure, and fracture morphology of coal at different immersion time. The experimental results show that the coal sample in this mining area belongs to coking coal under the bituminous coal category. The main inorganic substances are kaolinite and calcite.
Databáze:	OpenAIRE
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