论文部分内容阅读
基于地震目录的统计分析及由此衍生的地震复发周期与地震预测概率分析一直是地震活动性研究的重要部分,而人类有仪器记录的地震活动历史极其有限,因此采用其他方法建立人工地震目录进而研究地震活动特征与规律具有一定的理论意义.本文系统阐述了弹簧-滑块模型、细胞自动机模型、断层系统地震活动模型、有限元-滑块耦合模型、有限元模型等几种人工地震目录研究的理论模型与方法进展;归纳总结了不同模型在实现地震孕育、发生时不可忽视的关键问题:摩擦本构关系,并详细阐述了摩擦本构关系的进展及其区别;最后对有限元数值模拟人工地震目录研究时存在的问题及需要的进一步改进做了探讨.
Based on the statistical analysis of earthquake catalogs and the resulting earthquake recurrence cycle and earthquake prediction probability analysis has been an important part of seismicity research, and human history of instruments has recorded extremely limited seismic activity, so using other methods to establish artificial earthquake catalog It is of theoretical significance to study the characteristics and laws of seismic activity.This paper systematically expounds several artificial earthquake catalogs such as spring-slider model, cellular automaton model, fault system seismic activity model, finite element-slider coupling model and finite element model The theoretical model and the progress of the research are summarized. The key issues that can not be neglected when different models are used to realize earthquake occurrence are summed up: the friction constitutive relation, the progress and the difference of the friction constitutive relation are elaborated in detail. Finally, the finite element numerical The problems existing in the simulation of artificial earthquake catalog research and the further improvement of the requirements are discussed.