The strength characteristics and progressive failure mechanism of soft rock-coal combination samples with consideration given to interface effects

• Published in: International journal of rock mechanics and mining sciences (Oxford, England : 1997) Vol. 138; p. 104593
• Main Authors: Song, Hongqiang, Zuo, Jianping, Liu, Haiyan, Zuo, Shuhao
• Format: Journal Article
• Language: English
• Published: Berlin Elsevier Ltd 01.02.2021; Elsevier BV
• Subjects: Acoustic emission; Axial strain; Axial stress; Coal; Coal mines; Coal mining; Coal-rock height ratio; Compression; Compression tests; Compressive properties; Compressive strength; Failure mechanisms; Failure modes; Interface effects; Mechanical properties; Modulus of elasticity; Peak frequency; Poisson's ratio; Progressive failure mechanism; Rock masses; Rocks; Sandstone; Soft rock-coal combination samples; Static equilibrium; Strain; Strength characteristics; Strength of materials; Stress-strain curves; Progressive failure mechanism; Acoustic emission; Coal-rock height ratio; Strength characteristics; Interface effects; Soft rock-coal combination samples

The coal-measure rock masses of China's Ordos Basin are mainly composed of typical soft rock with low strength, which bear loads together with the coal seams during coal mining activities. Accurately determining the mechanical behaviors of combination soft rock and coal masses can provide a bas...