含障碍体滑动方向相同平行断层失稳破坏应变场、声发射分布特征的研究

STUDY ON THE CHARACTERISTICS OF ROCK FAILURE STRAIN AND ACOUSTIC EMISSION FIELD FOR TWO PARALLELLING FAULTS WITH THE SAME SLIP DIRECTION INCLUDING ASPERITIES

通过对含障碍体滑动方向相同平行断层失稳破坏的应变场、声发射数据的处理,分析了平行断层障碍体上应变场、声发射的时空演化图象,进而分析了障碍体的破裂过程以及障碍体破坏所引起的相互作用和相互影响,即增减震关系的分析.结果表明,这种滑动方向相同的平行断层的失稳破坏是一种减震机制.

By dealing with strain and acoustic emission (AE) data for two paralleling faults抯 instability and failure with the same slip direction including asperities, the tempo-spatial evolution of strain and AE field distribution on the asperity of paralleling faults is analyzed. Furthermore the failure process of asperities and interaction among the asperities, i.e. positive and negative seismicity are discussed. Results show that instability and failure for the paralleling faults is a kind of negative seismicity.