岩石结构的定量评价及其与岩石力学性质的关系

Quantitative Assessment of Rock Texture and Its Correlation with Rock Mechanical Properties

岩石的结构特征是影响其力学性质的一个主要因素,许多学者开展了这方面的研究,并提出了结构系数的概念以定量评价岩石结构。通过对已有的有关岩石结构定量化的文献分析,获得了大量的岩石结构数据和相应的力学性质数据,并对这些数据进行综合对比分析,以期获得岩石的结构系数与其力学性质的相关性。研究结果表明:结构系数能够量化岩石结构,并能与岩石的强度建立量化关系,但不能用统一的数学公式表示;岩石的单轴抗压强度(UCS)与结构系数(TC)的关系绝大部分介于UCS=22.059TC-8.823 6和UCS=22.059TC+90确定的直线之间。

The structural characteristic of rock is a major factor affecting its mechanical properties. Many scholars have carried out researches in this field, and put forward the concept of structural coefficient to evaluate rock texture quantitatively. Through the analysis of the existing literature on quantitative rock texture, a large number of rock texture data and corresponding mechanical property data are obtained. These data are comprehensively compared and analyzed in order to obtain the correlation between the rock texture coefficient and its mechanical properties. The research results show that the textural coefficient can quantify the rock texture and establish a quantitative relationship with the strength of the rock, but it cannot be expressed by a unified mathematical formula. The relationship between uniaxial compressive strength(UCS) and textural coefficient(TC) of rock is mostly between UCS=22.059 TC-8.823 6 and UCS=22.059 TC+90.