Strength characteristics of different stress spaces of red sandstone under loading and unloading tests
Xiaojuan Zheng,
Yunfei Wang,
Mengyi Song
et al.
Abstract:Red sandstone tests were conducted on the rock mechanics test system to clarify the strength and failure characteristics of red sandstone under triaxial loading and different unloading confining pressure rates. Strength change rules of the red sandstone in various stress spaces were analyzed. Results show that a large initial confining pressure indicates a long yield section and large axial strain. A small unloading confining pressure rate indicates a long yield section and large axial strain at failure under … Show more
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