众所周知,岩体内弹性振动的传播伴随着激发各种性质的电磁波,发生这种现象是由于第二类地震电效应、动电效应和压电效应之故。取一级近似时,前两种效应的特征是,弹性波与电磁波的频率一致,而且弹性波与电磁波的振幅是线性关系。含有石英岩体的压电效应也具有上述特征。在激发石英脉或石英压电晶体的矿体时,由于出现共振现象,电磁波的频谱可能与弹性波的频谱有显著区别。在记录含有闪锌矿岩体的压电效应时,没有发现电磁波与弹性波的频率有差别。在采取井下地球物理勘探压电方法工作时,查明在距离产生弹性振动的爆点几十米处,用重为十分之几到几公 It is well-known that the propagation of elastic vibrations in rock mass is accompanied by the excitation of electromagnetic waves of various kinds. This phenomenon is due to the second type of seismic electric effect, electrokinetic effect and piezoelectric effect. Taking the first-order approximation, the first two effects are characterized by the same frequency of the elastic wave and the electromagnetic wave, and the linear relationship between the elastic wave and the amplitude of the electromagnetic wave. The piezoelectric effect with quartzite also has the above characteristics. When excited by quartz or quartz piezoelectric crystals, the frequency spectrum of the electromagnetic wave may be significantly different from that of the elastic wave due to the resonance phenomenon. There was no difference between the frequencies of the electromagnetic wave and the elastic wave when the piezoelectric effect of the sphalerite body was recorded. In the underground geophysical exploration of piezoelectric methods work to identify tens of meters in the distance from the elastic vibration of the explosion point, with a weight of a few tenths to several