陆相煤系泥岩微观组构及其力学特性关联性研究 大学论文.doc

陆相煤系泥岩微观组构及其力学特性 关联性研究 Association Study on Micro Fabric and Mechanical Properties of Terrestrial Coal Series Mudstone 摘 要 论文 第一，基于数字图像处理的相关技术及方法，提出来煤系泥岩微观结构图像处理步骤及方法，即利用Matlab软件中图像处理工具，通过编程对微观结构图像进行了处理，采用图像裁剪对图像进行预处理，利用阈值分割和边缘检测对图像进行有效分割，最后完成对图像中微观结构信息的提取。 第二，借助力学强度试验测定了陆相煤系泥岩抗压、抗拉和抗剪强度，进一步分析了微观组构与其力学特性的关系。 第三，对陆相煤系泥岩的微观结构信息采用主成分分析法进行综合量化评价，建立一个相对较为合理的参数来代替各单因素评价指标对陆相煤系泥岩微观结构进行综合量化评价，并结合常规力学参数采用多元线性回归分析法建立4者间合理的数学关系式。 本论文有图幅，表个，参考文献篇。 关键词：Abstract The paper reviewed a large number of domestic and foreign literature. In this paper, terrestrial coal series mudstone is the research object. We examine the mineral composition, element content, microstructure and the original rock mechanics characteristics With image processing tool of Matlab, we analyze the obtained microstructure image. And we also study the relationship between micro fabric and mechanical properties. Mathematical statistics is adopted for determining the weight of each single-factor index of the microstructure. Finally, we get a parameter which reflects the microstructure of. terrestrial coal series mudstone. Combining with the mechanical characteristics, we establish a multiple linear regression model. Firstly, based on relevant technology and method of digital image processing, we raise steps and methods for meso-image processing of coal series mudstone. Image enhancement is used to preprocess for the images. And we use threshold segmentation of gray-scale and edge detection algorithms for image segmentation. At last, we extract the parameters of the microstructure features. Secondly, with the mechanical strength tests, we examine the compression strength, the tensile strength, and the shear strength of the terrestrial coal series mudstone. And we continually analysis the relationship between micro fabric and its mechanical properties. Thirdly, using principal component analysis study the method of comprehensive quantitative evaluation of the microstructure information. A relatively reasonable c