The occurrence of rockburst dynamic disaster is a process from the microdamage to macroinstability of coal and rock mass, which is accompanied by the acoustic emission (AE) phenomenon. The application of AE technology can reliably help to judge and predict the damage evolution of coal and rock mass, as the most basic problem in the study of AE is the location of the AE source. In this work, the AE source localization experiments of rod-shaped rocks and plate-shaped rocks were carried out. The influence of calibration wave velocity of linear and plane positioning on the location of the AE source was studied. The feasibility analysis of the AE source localization of a plate-shaped rock with different sensor arrays was conducted. The result of the plane location was optimized by wavelet packet analysis combined with cross correlations. The results show that the homogeneity of marble members in this work is suitable, and the positioning error is least affected by wave velocity. In the positioning of the plane AE source, it is suitable to choose a diamond sensor array. The positioning source should be located near the center of the array network. The positioning effect of the rod-shaped rock is generally better than that of the plate-shaped rock. In the actual source positioning work, it should be simplified as much as possible as a linear positioning problem. A more accurate AE signal delay could be obtained using wavelet packet analysis combined with cross-correlation technology, which can greatly reduce the positioning error caused by the accuracy of time difference. The purpose of this work is to provide a basis for determining a more accurate location of the fracture source of rock materials, which is of great significance and application value on the prediction and control of rockburst dynamic disaster.

中文翻译：

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线性和平面岩体声发射源定位研究

岩爆动态灾害的发生是煤与岩体从微观破坏到宏观失稳的过程，并伴有声发射现象。声发射技术的应用可以可靠地帮助判断和预测煤和岩体的损伤演化，因为声发射研究的最基本问题是声发射源的位置。在这项工作中，进行了棒状和板状岩石的声发射源定位实验。研究了线性和平面定位的标定波速对声发射源位置的影响。进行了具有不同传感器阵列的板状岩石声发射源定位的可行性分析。通过小波包分析和互相关来优化平面定位的结果。结果表明，大理石构件的均质性是合适的，并且波速对定位误差的影响最小。在平面AE源的定位中，适合选择菱形传感器阵列。定位源应位于阵列网络的中心附近。杆状岩石的定位效果通常好于板状岩石。在实际源定位工作中，应尽可能简化线性定位问题。小波包分析与互相关技术相结合，可以得到更准确的声发射信号延迟，可以大大减少时差精度引起的定位误差。