分维在电磁幅射技术预测冲击矿压中的应用

根据在应力作用下，煤岩体中非均匀变速变形产生电磁辐射的机理，应用分形理论分析电磁幅射参数曲线的分形特征；用关联维数描述电磁幅射强度、电磁幅射脉冲数等参数随时间的变化。理论研究和应用实例表明：在正常情况下，电磁辐射值分维维数变化小：在冲击矿压发生前，电磁辐射值的分维维数变化大。电磁幅射参数维数变化异常的现象，可用于冲击地压的预测预报。

Study and practice of fractal dimension in prediction of rock burst by technology of electromagnetic emmision(eme)

According to the mechanism which the nonhomogeneous shift and deformation emit electromagnetic emission(EME)in the coal seam & strata by stress the article, analyzes the fractal dimension character of parameter graph of electromagnetic emission(EME)by using the fractal dimension theory. Correlation dimension has been used to describe the change of parameters with the change of the time, such as the EME intensity, the EME impulse and so on. By the study and practice it is proved that the fractal dimension of EME has little change in the ordinary conditions and the fractal dimension of EME has much change before the rock burst. The fact that the change of the fractal dimension is abnormal is used to forecast and predict the rock burst.