论文部分内容阅读
在地质环境下,岩石表现出众多复杂的工程特性和现象,且都与其内部微细结构的形态和变化有关。定量给出岩石细观结构特征参数并研究其与宏观力学作用之间的关系,能够进一步了解岩石的力学变形特性。对某水电站引水隧洞围岩大理岩试样破坏断裂断口采用电镜扫描,得到断口处的SEM大量信息,然后利用计算机图像处理分析技术,借助模式识别理论,以微细结构要素的信息提取和量化为主要的研究内容,探讨了岩石微细结构与宏观力学行为的关系。通过定量的岩石细观结构试验研究,从细观尺度了解岩石破坏机制具有重要意义,对分析和评价岩石的工程性质及其对工程建设的适应性也有着明显的现实性。
In the geological environment, rocks show many complicated engineering features and phenomena, all related to the morphology and changes of their fine structures. Quantitatively, the rock mesostructural parameters are given and the relationship between them and macroscopic mechanics is studied. The mechanical deformation characteristics of rock can be further understood. The scanning electron microscope (SEM) was used to scan the fractured fracture surface of marble samples in the diversion tunnel of a hydropower station. SEM was used to obtain a large amount of information on the fracture surface. Then, using computer image processing and analysis technology, the pattern recognition theory was used to extract and quantify the information of fine structure elements The relationship between the micro-structure of rock and macroscopic mechanical behavior was discussed. It is of great significance to understand the rock failure mechanism from the meso-scale through the quantitative experimental study of the rock meso-structure. It is also significant to analyze and evaluate the engineering properties of rock and its adaptability to engineering construction.