【摘要】 本文应用断裂力学中的止裂原理和用环氧树脂材料所做的破裂终止的实验结果,讨论了地震断裂的终止问题并提出了相应的地震地质条件:1.近期曾发生过中强地震的区域;2.历史上发生过七级以上大震的震源区;3.深大断裂及构造交汇区;4.一定规模的地块和横向隆起。依此条件可用来估计未来大震的强度,因而对中长期预报可能是有意义的。更多还原

【Abstract】 Using the theory of stopping crack in the fracture mechanics and experimental results of stopping crack with photoelastic material, the problem about stopping condition of seismic fracture has been discussed. The suitable seismo—geologocal conditions of fracture—stop are suggested. These conditions are (1) the region in which a middling strong esrthquake happened not long before (2) the source region in which a large earthquake (M_s≥7)occurred historically (3) the transversal fault and the intersecting region of some faults (4) the massive block anb rise. Based upon these conditions, the strength of future strong earthquakes may be estimated-Therefore, it is perhaps of great significance to prediction of the moderate or long—term earthquake.更多还原