This study investigates the predictive accuracy of different three-dimensional rock strength criteria. The research focuses on the comparison between ZZ criteria and HBWW criteria against the HB, PH, and GP criteria. The results demonstrate that the ZZ and HBWW criteria exhibit significant advantages over the HB, PH, and GP criteria. The primary reason for this is that the HB criterion does not consider the influence of the intermediate principal stress, while the PH and GP criteria, although considering the intermediate principal stress, do not distinguish the effect of the Lode angle on rock strength, leading to larger prediction errors.
Rock strength; Three-Dimension; Criteria; Predictive accuracy; Prediction errors
Li L. Study on the Predictive Accuracy of Different Three-Dimensional Rock Strength Criteria. Int. J. Eng. Sci. Technol., 2024, 2(2), doi: 10.58531/ijest/2/2/3