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据具有孔隙的岩石中水的渗透作用及Mogi的地震分类原则,提出水的渗透过程形成了库区有效应力分布的非稳定的不均匀状态,水库地震的序列特点与其密切相关;讨论了水的渗透对引起主震的作用,得出水库区的渗透率约为10~(-4)达西,认为在蓄水前库区的构造应力场未达到临界状态,库水与地下水形成新水系,后在此基础上进一步渗透,孔隙压力增加,构造应力进一步集中,激发主震;根据库仑准则讨论了应力场的转换,提出主震后应力场的转换是造成前震和余震的震源应力场方向不同的原因。
According to the infiltration of water in the rock with pores and the Mogi earthquake classification principle, it is proposed that the water infiltration process forms an unstable non-uniform distribution of the effective stress distribution in the reservoir area, and the sequence characteristics of the reservoir earthquake are closely related to it. The result shows that the permeability of the reservoir area is about 10 ~ (-4) Darcy. It is considered that the tectonic stress field in the reservoir area before the water storage has not reached the critical state, that the reservoir water and the groundwater form a new water system, After that, the pore pressure is increased and the tectonic stress is further concentrated to stimulate the main shock. According to the Coulomb criterion, the conversion of stress field is discussed. It is suggested that the change of stress field after the main shock causes the source stress fields of foreshocks and aftershocks to be different in direction s reason.