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为研究岩石的应力和强度与声发射的AE数和能量等之间的关系.在单轴加卸载的条件下,对中深部岩石进行岩爆倾向性实验,同时进行声发射监测.实验结果表明:在室内岩爆倾向性实验中,岩石只经过初始压密阶段、弹性变形阶段、非弹性变形阶段初期;在初始压密阶段,岩石的AE数出现少量短时突增,在弹性变形阶段,岩石的AE数和能量迅速增长;利用尖点突变模型,对岩石的声发射参数进行突变分析,进而实现对岩爆的判别.通过声发射参数和尖点突变模型可为预测和防治岩爆提供理论支持.
In order to study the relationship between the stress and intensity of rock and the AE number and energy of acoustic emission, under the condition of uniaxial loading and unloading, rock burst propensity experiment of middle and deep rock was carried out and acoustic emission monitoring was carried out at the same time. In the laboratory rockburst propensity experiment, the rocks only pass the initial compaction stage, the elastic deformation stage and the initial stage of inelastic deformation stage. At the initial compaction stage, there are a few short-time sudden increases in the AE numbers of the rock. At the stage of elastic deformation, AE number and energy of the rock are rapidly increasing.Using the cusp catastrophe model, the acoustic emission parameters of the rock are abruptly analyzed to determine the rockburst.The acoustic emission parameters and cusp catastrophe model can be used to predict and prevent rock burst Theoretical support.