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为评价金川二矿区大范围岩体的稳定性，本文设计采用多通道声发射定位系统进行监测．通过分析声发射事件位置的分布，发现这种分布具有分形特征，其分维值是预报大范围破坏灾害的有效指标。应用灰色理论建立的分维预测模型可以预测未来时间的分维值，从而为预测大范围的破坏灾害提供了基本依据。
In order to evaluate the stability of a wide range of rock mass in Jinchuan No.2 mining area, this paper designs a multi-channel acoustic emission positioning system for monitoring. By analyzing the distribution of acoustic emission events, this distribution is found to have fractal characteristics, and its fractal dimension value is an effective index to predict the damage of large-scale disasters. The fractal dimension prediction model established by the gray theory can predict the fractal dimension of the future time, so as to provide a basic basis for the prediction of large-scale damage disasters.