Experimental study of stress-permeability behavior of single persistent fractured coal samples in the fractured zone

• Published in: Journal of geophysics and engineering Vol. 15; no. 5; pp. 2159 - 2170
• Main Authors: Zhang, Cun, Zhang, Lei, Zhao, Yixin, Wang, Wei
• Format: Journal Article
• Language: English
• Published: London IOP Publishing 01.10.2018; Oxford University Press
• Subjects: Coal; Coal mines; Coal mining; Compaction; cyclic loading and unloading; fractured zone; Permeability; single persistent fracture coal sample; stress sensitivity; fractured zone; single persistent fracture coal sample; cyclic loading and unloading; stress sensitivity; permeability
• ISSN: 1742-2132; 1742-2140
• DOI: 10.1088/1742-2140/aac12e

The coal and rock masses located in a fractured zone are generally subject to shear and tensile stresses and respective damages, which increase their permeability and produce new channels of gas migration. This directly affects the gas extraction and the safe mining of the adjacent coal seams. This...