首页
>
期刊首页
>
岩石力学通报（英文）
>
2026年2期
>
Mechanical behavior and strength model of anchored mortar-rock composite under triaxial compression
Mechanical behavior and strength model of anchored mortar-rock composite under triaxial compression
摘要
Anchor-shotcrete support has been widely applied in underground rock mass engineering globally,where the anchoring of bolts plays a crucial role in stabilizing the mortar-rock interface.In this study,triaxial compression tests were conducted on anchored mortar-rock composite specimens under varying confining pressures,and the failure mechanisms of the anchored mortar-rock composites were investigated using acoustic emission(AE)and three-dimensional morphology scanning techniques.The results indicate that the bolt inclination angle signifi-cantly influences the plastic deformation and compressive strength of the mortar-rock composites during triaxial compression tests.The composite specimens with a bolt inclination angle of 90° between the bolt and the mortar-rock interface exhibited the optimal load-bearing performance.As the confining pressure increased,the anchored mortar-rock composites primarily underwent plastic deformation,reducing the property differences caused by varying bolt angles.The bolt angles led to four distinct failure modes in the mortar-rock composites.The acoustic emission(AE)signals during the tests demonstrated that the mortar-rock composites with a bolt inclination angle of 90° exhibited the highest stability.Additionally,the study revealed that the morphological parameters of the mortar-rock interface varied positively with the bolt inclination angle.Finally,a strength model for the anchored mortar-rock composites under triaxial compression was derived.The reliability of the strength model was validated by comparing the experimental results with the model predictions under four different confining pressures.
年，卷(期)：
2026, 5(2)
机标分类号：
R395.4
O646
Q556
在线出版日期：
2026年6月24日
