Study on Mechanical Properties and Acoustic Emission Characteristics of Similar Specimens of Rocks with Different Fracture Angles
SUO Yonglu
QU Huisheng
Abstract：In order to study the variation of mechanical properties of rock-like materials under the influence of prefabricated cracks with different dip angles, rock-like samples were made from river sand, cement, gypsum and other materials, and cracks of different angles were made for the similar rock samples. Uniaxial compression experiments were carried out on samples with differ-ent inclination angles to study the variation of mechanical properties. The peak intensity of the specimen with pre-formed cracks increases logarithmically with the the increase dip angle of the fracture. At the same time, the peak strain increases exponentially with the increase dip angle of the fracture. The cumulative count of AE event and the energy intensity of the pre-formed fracture specimens are similar. It is divided into three stages: the compaction initiation stage, the elastic stablity growth stage, and the de-struction of the sharp growth stage. And the cumulative count of AE event increases with the increase of the inclination angle, and the energy intensity also increases with the increase of the inclination angle.
Keywords：prefabricated crackuniaxial compressionpeak strengthpeak strainphysical similarity simulation
Publication Date：2019-11-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 54-57 )