岩石非均质度与热破裂的相关性分析

Analysis of correlation of rock thermal cracking with inhomogeneity

岩石的热破裂具有普遍性的特点,但不同岩石的矿物组成造成岩石热破裂具有不同的特征.通过研究岩石的非均质特征确定矿物非均质参数,结合岩石的热破裂特征对岩石在细观条件下的热破裂特征与岩石非均质度之间的关系进行研究,分别给出岩石矿物的质量非均质度Mn与体积非均质度Vn的定义,通过分析给出岩石非均质度与热破裂门槛值K的拟合公式.结果表明岩石的热破裂门槛值与岩石非均质度具有显著的相关性.

Rock thermal cracking makes a feature of generality, but different rock minerals formation will lead to a different thermal cracking characteristics. By analyzing rock inhomogeneous characteristics, determining rock minerals inhomogeneous parameters, and incorporating rock thermal cracking characteristics, the relationship of rock thermal cracking to rock inhomogeneity was investigated in microscopic condition. And the concepts of mass inhomogeneity M. of rock minerals and their volume inhomogeneity V. were given, respectively. A fitting formula of threshold of rock thermal cracking K was given by means of analysis. The result showed that there was an obvious correlation between rock thermal cracking threshold and rock inhomogeneity.