地震学报（英文版）2002，Vol.15Issue(1)：39-46,8.
Numerical simulation of rock progressive failure on samples with a pre-existed weak zone during brittle failure*
Numerical simulation of rock progressive failure on samples with a pre-existed weak zone during brittle failure*
摘要
Abstract
Considering the heterogeneity of geomechanical materials, seismicity during brittle rock failure under compressive loading on the sample with an original weak zone is simulated by using rock failure process analysis code (RFPA2D). The run-through process of weak zone, the forming of new fault and associated micro-seismicities are studied. The modeling demonstrates the total process of source development of earthquake from deformation, micro-failure to collapse and the behavior of temporal-spatial distribution of micro-seismicities. The stress, strain and the temporal-spatial distribution of micro-seismicities life-likely portrayed the phenomena of localization and temporal-spatial transitions, which is similar to those observed in our real crust. Also, the results obtained in simulations are in agreement with or similar to the reported experimental observations.关键词
pre-existed weak zone/rock failure/micro-seismicity/numerical simulationKey words
pre-existed weak zone/rock failure/micro-seismicity/numerical simulation分类
天文与地球科学引用本文复制引用
焦明若,张国民,唐春安,傅宇方..Numerical simulation of rock progressive failure on samples with a pre-existed weak zone during brittle failure*[J].地震学报（英文版）,2002,15(1):39-46,8.基金项目
The Development Program on National Key Basic Researches under the Project (Mechanism and Prediction of Continental Strong Earthquakes( (G19980407) and State Natural Science Foundation (49974009). （Mechanism and Prediction of Continental Strong Earthquakes( (G19980407）
