True triaxial strength and failure characteristics of cubic coal and sandstone under different loading paths

• Published in: International journal of rock mechanics and mining sciences (Oxford, England : 1997) Vol. 135; p. 104439
• Main Authors: Lu, Jun, Yin, Guangzhi, Zhang, Dongming, Gao, Heng, Li, Cunbao, Li, Minghui
• Format: Journal Article
• Language: English
• Published: Berlin Elsevier Ltd 01.11.2020; Elsevier BV
• Subjects: Anisotropy; Bedding coal; Brittleness; Coal; Coal mines; Coal mining; Crack initiation; Criteria; Deformation; Failure mode; Failure modes; Intermediate principal stress; Mechanical properties; Rock masses; Rocks; Sandstone; Strength; Stress; Stress distribution; Tectonics; Triaxial loads; True-triaxial tests; Underground mining; Bedding coal; Failure mode; True-triaxial tests; Deformation; Intermediate principal stress; Strength

In deep underground coal mining, engineering activities are performed within anisotropic in-situ stress fields due to engineering disturbances and tectonic stress. Many such activities involve the development of excavations in soft rock and anisotropic coal. Accordingly, studying the mechanical prop...