【摘要】 利用作者已研制成功的ＣＴ机专用三轴加载试验设备，完成了单轴压缩荷载作用下岩石损伤ＣＴ实时细观试 验。给出了ＣＴ图像中裂纹宽度的估算方法，确定了应力损伤门槛值，对ＣＴ试验结果进行了定量分析，得到了单轴 压缩岩石损伤演化的初步规律。基于ＣＴ试验结果，对岩石应力－应变全过程曲线进行了分段，从工程应用出发，给出 了峰前分段岩石损伤演化方程及本构关系。理论分析结果与试验结果较吻合。更多还原

【Abstract】 The computerized tomography (CT) real-in-time testing of rock moodamage evolution law under uni- axial compression loading has been completed using the specified loading equipment corresponding to the CT ma- chine developed by authors. The estimation method of microcrack width is given. The stress threshold value of damage is determined with the quantitative analysis on testing results. The preliminary results of rock meso-dam- age evolution law under uniaxial compression are obtained. Based on the CT testing results, the complete rock stress-strain process curve is divided into several. From the point of view of engineering application, the pre-peak 3-segment damage evolution equation and constitutive model of rock are given. The obtained theory re- sults coincide well with the testing results.更多还原