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1972年召开的地应力会议发表了一篇探讨地震破坏模式的论文:“一个平面剪切破坏前的应力场”。该文认为地震孕育过程晚期,断层填充物失去了抗剪能力。地壳构造运动使断层增长的剪切荷载都集中在闭锁段上。由此可导出临震前地应力分布特征:离震源稍远处总有一个主应力指向震源(即闭锁段)。
The Infernal Stress Conference held in 1972 published an essay on the mode of earthquake damage: “a stress field before plane shear failure”. This paper considers that the late earthquake gestation process, fault filling lost shear capacity. The crustal tectonic movement concentrates the shear load of fault growth on the block. It can be derived before the earthquake stress distribution characteristics: slightly away from the source there is always a main stress point source (ie, lock block).