CAJ | 학술논문

使用新开发岩石破裂过程分析软件(RFPA2D),通过一系列模型实验,研究岩石中预制断层面几何特征和力学非均匀性对地震前兆产生的影响.模型使用5个具有不同均质度的岩石样本进行数值模拟研究.数值模拟结果表明,不同均质度岩石破坏在地壳中会产生不同的地震前兆现象.在一些区域,可以观测到明显的前兆,而在另一些地区却很难观测到明显的前兆现象.模拟结果与实验观测和自然界实际观测结果由很好的一致性.
사용신개발암석파렬과정분석연건(RFPA2D),통과일계렬모형실험,연구암석중예제단층면궤하특정화역학비균균성대지진전조산생적영향.모형사용5개구유불동균질도적암석양본진행수치모의연구.수치모의결과표명,불동균질도암석파배재지각중회산생불동적지진전조현상.재일사구역,가이관측도명현적전조,이재령일사지구각흔난관측도명현적전조현상.모의결과여실험관측화자연계실제관측결과유흔호적일치성.
A series of numerical model tests were performed to investigate the effects of geometric and mechanical heterogeneity (pre- existing faults) of rocks on earthquake precursors using the newly- developed rock progressive failure analysis code (RFPA2D). The failure procedures of 5 rock samples with different degrees of heterogeneity are simulated. The numerical simulation of rock failure with the different heterogeneity shows that rock failure with the different mechanical heterogeneity produces different earthquake precursory phenomena in the earth crust. In some areas, obvious precursors can be observed, but in other areas, it may be difficult to observe any appreciable precursory p henomena. The simulative results are in a good agreement with those of observational ones in nature or experiments.