摘要
探寻将要发生地震的各种信号表征,是预报地震的关键。本文利用材料疲劳损伤的能量计算方法,对地震发生之前承力岩层的疲劳损伤能量变化过程进行了计算分析,结果显示:承力岩层的疲劳损伤能量随着时间时时刻刻发生着变化,但呈现出以一个昼夜(24小时)为周期性的变化规律,在所跟踪的地震发生前几天,对应的疲劳损伤能量都出现过显著增加的过程。
Exploring various signal characterization of earthquake, is the key for earthquake prediction of the natural disasters. In this paper, based on theory of material fatigue damage, the changes for fatigue damage energy of force bearing strata was calculated before the earthquakes by seismic dynamic signals. The changes of bearing rock fatigue damage energy display： fatigue damage energy bearing strata changing with the time all the time; But it has shown in a day （24 hours） for the periodic change rule;And the fatigue damage before the earthquake the energy corresponding appeared significantly increased.
出处
《防灾减灾学报》
2014年第1期25-28,共4页
Journal of Disaster Prevention And Reduction
基金
福建省教育厅资助项目(JA11035)
关键词
地震
疲劳
损伤
信号
earthquake
fatigue
damage
signals
