NUMERICAL SIMULATION FOR ACOUSTIC EMISSION AND SOURCE LOCATION OF ROCK UNDER TRIAXIAL COMPRESSION
Numerical simulation for Acoustic emission (AE) and source location are carried out on the rock specimen granite under triaxial compression using the rock failure process analysis code RFPA2D. RFPA2D is used to determine the fracture process of rock. Moreover, AE source location can be found using RFPA2D. Numerical simulation shows that there is some microseism precursory before main shock; tension stress is the source of rock failure. Using the space distribution characteristics of AE and information which is produced by tension stress, instability failure can be predicted. Through analysis, it is founded that the previous stage of a microseism event is mainly induced by compression stress, and in the middle and later stage there exists many microseism events which are induced by tension stress. This is useful in practical engineering.
FENG-SHAN HAN JU-YING YANG
Centre for Material Failure Modelling Research, Dalian University Dalian, 116622, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
911-914
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）