RQD

The correlation analyses of relationship between RBI and rock quality designation, RBI and coefficient of rock\|mass sound\|degree, RBI and deformation mod.

比岩石质量指标更能准确地反映岩体块度及其结构特征 ,其工程意义更为显著 。

In the paper,several fractal methods of rock quality are introduced.

介绍了岩石质量评价的分形表述方法。

And,the rock quality of roofs in Liuqiao No.

运用岩石质量的分形评价原理和方法对刘桥一矿钻孔煤层顶板岩芯质量进行了统计、计算和评价,得出:(1)lgp-lgr 呈很好的线性正比关系,岩体裂隙分布具有自相似性,可以用分形来研究岩石(体)质量;(2)钻孔岩石质量的分维值 D_r 一般在0。