摘要
在红河断裂带测区，据３０ｋｍ深残余和现今水平最大剪应力场的分布、断裂带的倾角、岩石综合抗剪强度实验和断裂带发生大地震的“裂面烧结再断机制”，划分出６级以上地震的危险区段，计算了其上限震级，提出了判定各区段发生大地震危险性的安全系数。据测区受力方式与地球自转状态的关系，及有利于断裂带活动而发生大地震的地球自转状态出现的时间，预测了区内发生大地震的危险时段。
On the basis of distribution of residual and present horizontal major shear stress field at 30km depth,dip angle of Honghe faults,experimental results of comprehensive shear strength Of rock,and'mechanism of sintered breaking surface of rock rebreaking'during a strong earthquake,risk areas of M≥6 have been divided in this paper.We have also calculated upper limit of magnitude in risk area, and advanced safety coefficient to distinguish risk of strong earthquake in each risk ar4ea.According to relations earth rotation,and suitable for earthquake occurrence,we have forecast the earthquake-risk time in the research range.
出处
《地震研究》
CSCD
北大核心
1996年第1期34-41,共8页
Journal of Seismological Research
基金
地震科学联合基金
