最小交叉熵谱在矿震井水位资料中的应用

APPLICATION OF MINIMUM CROSS ENTROPY SPECTRUM TO WATER LEVEL DATA OF ROCK BLAST

摘要:

文中简述了最小交叉熵谱原理,并用模拟资料检验了最小交叉熵谱计算程序,最后用最小交叉熵谱方法分析了矿震井水位资料。结果表明,矿震井水位资料的最小交叉熵谱中,除了日变化的2Hz以外,在震前几小时到几天中均出现8Hz的高频分量,这是一般的谱分析方法无法得到的。本文提出的方法为矿震预测提供了新的路径。

Abstract:

The theory of minimum cross entropy spctrum was briefly introduced. One experimental data was used to examine the program of minimum cross entropy spectrum,and we used the method of minimum cross entropy spectrum to analvse water level data of rock blast.Besides the day change of 0.98Hz,the results show that there would appear high frequency of 1.2Hz several davs before some rock blasts. This result can not be obtained by ordinary methods. The new method provides a new path of rock blast forecast.