【作者】
余怀忠；
尹祥础State Key Laboratory of Nonlinear Mechanics；
Institute of Mechanics；
Chinese Academy of Sciences；
Beijing 100080；
China Institute of Earthquake Science；
China Earthquake Administration；
Beijing 100036；
China；
夏蒙棼；
许昭永；
李敏；
梁乃刚；
彭克银State Key Laboratory of Nonlinear Mechanics；
China Institute of Earthquake Science；
Victor Kukshenko；
吴智深；
李琦；
Surguei Elizarov；
【Author】
YU Huai-zhong1) YIN Xiang-chu1, XIA Meng-fen1, XU Zhao-yong4) ) LI Min1) ( LIANG Nai-gang1) PENG Ke-yin1, Victor Kukshenko5) WU Zhi-shen6) LI Qi6) Surguei Elizarov7) 1) State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China 2) Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China 3) Peking University, Beijing 100871, China 4) Earthquake Administration of Yunnan Province, Kunming 650041, China 5) Ioffe Physical Technique Institute, Russian Academy of Sciences, Petersburg 194021, Russia 6) Ibaraki University, Hetachi 316-8511, Japan 7) Interunis Ltd, Moscow 129075, Russia
【机构】
State Key Laboratory of Nonlinear Mechanics；
Institute of Mechanics；
Chinese Academy of Sciences；
Beijing 100080；
China；
China Peking University；
Beijing 100871；
Earthquake Administration of Yunnan Province；
Kunming 650041；
China；
Ioffe Physical Technique Institute；
Russian Academy of Sciences；
Petersburg 194021；
Russia；
Ibaraki University；
Hetachi 316-8511；
Japan；
Interunis Ltd；
Moscow 129075；
Russia；
【Abstract】 According to the critical point hypothesis (CPH), energy release would accelerate in power law before occurrence of large earthquakes or failure of brittle materials. In the paper, CPH was studied by acoustic emission experiments of large-scale rock samples. Three kinds of rock samples were used in the experiments. The tri-axial loading con- dition was applied under different loading histories. The released elastic energy (Acoustic emission) was recorded with acoustic emission technique as microcracks emerged and developed inside the rock samples. The experimen- tal results gave a further verification on the CPH. The elastic energy release of rock samples would accelerate be- fore the failure even under different experimental conditions. Primary studies were also made on medium-term earthquake prediction by using accelerating energy release (AER) in the paper.更多还原
【基金】 Project of Natural Sciences Foundation of China (10232050); Project of State Key Basic Research (2002CB412706) and Project of Computer Network Information Center; Chinese Academy of Sciences (2002CB412706).
