摘要
本文将地震现象与材料的静力破坏特点、疲劳破坏特点相比较,确认产生地震的岩石断裂和错动属于疲劳破坏。根据作者70年代末研究受压容器、化工机械疲劳破坏规律的成果,将地球作为一个球形薄壁容器进行了认真计算,结果表明:地球无论在自转离心力的作用下,还是在太阳系内任一天体的万有引力作用下,35°N地带的疲劳破坏均最严重。从而揭示了35°N地带地震活动性高的原因。
Comparing the earthquake phenomena with the characteristics of static force breaking and fatigue breaking, the author considers that the fracture and faulting in rock causing earthquake are fatigue breaking. Based on some results about studying fatigue fracture law of compressed vessel and chemical machines at the end of 1970s, the author has calculated conscientiously, regarding the earth as a spherical vessel with thin wall. The results show that fatigue breaking in 35°N zone of the earth is the most severe, regardless of the action of centrifugal force of the earth rotation or the gravitation of any celestial body in the solar system. Thus, the cause of intense seismicity in 35°N zone is revealed.
出处
《西北地震学报》
CSCD
1992年第1期55-61,共7页
Northwestern Seismological Journal
