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利用最新研制的与 CT机配套的专用加载设备 ,进行了三轴 (单轴 )荷载作用下岩石破坏全过程的细观损伤扩展规律的动态 CT( Computerized Tomography)试验。得到了在不同荷载作用下岩石从微孔洞被压密到微裂纹萌生、分叉、发展、断裂、破坏直到卸载等各个阶段清晰的 CT图像。对得到的 CT数等数据进行了分析 ,给出了应力损伤门槛值 ,得到损伤扩展的初步规律。
A computerized Tomography (CT) experiment was carried out to investigate the meso - damage propagation of rock during the entire rock failure under triaxial (uniaxial) loading with the newly developed dedicated loading equipment for CT. The clear CT images of the rock under various loadings from the micro-cavities to the micro-cracks initiation, bifurcation, development, rupture and unloading were obtained. The obtained CT numbers and other data were analyzed, the threshold value of stress damage was given and the initial law of damage spread was obtained.