压缩荷载条件下岩石细观损伤特征的研究

Study on the Mesoscopical Characteristics of Rock Damage under Compressive Loading

作者利用装配有拉压加载台和荷载伺服系统的扫描电镜,首次用小尺寸试样对受压条件下岩石微结构及其细观损伤的全过程进行了试验研究。在岩石初始损伤、起裂机制、损伤演化与破坏的细观特征和机理、细观主裂纹的形成,以及蠕变损伤的细观特征等方面取得了一系列颇有价值的成果,并为岩体损伤力学研究探索了一条新途径。

Using a scanning electron microscope fitted with loading equipment and load servo system, the author made an experimental study on microstructure, meso damage and the changes of rock under the condition of compressive loading. This paper displays some valuable achievements in the aspects of initial damage of rock, mechanisms of original cracking and failure, formation of meso main-crack, mesoscopical properties and mechanisms of damage evolving, and mesoscopical characteristics of creep damage.