|
|||||
|
|
Load-Unload Response Ratio (LURR), Accelerating Moment/Energy Release (AM/ER) and State Vector Saltation as Precursors to Failure of Rock Specimens |
|
| Authors: | Xiang-Chu Yin Huai-Zhong Yu Victor Kukshenko Zhao-Yong Xu Zhishen Wu Min Li Keyin Peng Surgey Elizarov Qi Li |
| Institution: | 1. LNM (State Key Laboratory of Nonlinear Mechanics), Institute of Mechanics, CAS, Beijing, 100080 2. CAP (Center for Analysis and Prediction), China Seismological Bureau, Beijing, 100036 3. Ioffe Physical Technique Institute, Russian Academy of Sciences, Petersburg, 194021, Russia 5. Yunnan Province Seismological Bureau, CSB, Kunming, 650041 4. Ibaraki University, Japan 6. Interunis Ltd, Prospect Mira, 78, 40, Moscow, Russia |
| Abstract: | — In order to verify some precursors such as LURR (Load/Unload Response Ratio) and AER (Accelerating Energy Release) before large earthquakes or macro-fracture in heterogeneous brittle media, four acoustic emission experiments involving large rock specimens under tri-axial stress, have been conducted. The specimens were loaded in two ways: monotonous or cycling. The experimental results confirm that LURR and AER are precursors of macro-fracture in brittle media. A new measure called the state vector has been proposed to describe the damage evolution of loaded rock specimens. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |