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Yu Huaizhong,Yin Xiangchu,Liang Naigang,Xia Mengfen,Li Min,Xu Zhaoyong,Peng Keyin,Victor Kukshenko,Wu Zhishen,Qi Li,Surguei Elizarov
Author NameAffiliation
Yu Huaizhong LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China 
Yin Xiangchu LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China;Center for Analysis and Prediction, Chinese Seismological Bureau, Beijing 100036, China 
Liang Naigang LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China 
Xia Mengfen LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China; PekingUniversity,Beijing100871,China 
Li Min LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China 
Xu Zhaoyong SeismologicalBureauofYunnanProvince,Kunming650041,China 
Peng Keyin LNM, Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China;Center for Analysis and Prediction, Chinese Seismological Bureau, Beijing 100036, China 
Victor Kukshenko IoffePhysicalTechniqueInstitute,RussianAcademyofSciences,Russia 
Wu Zhishen IbarakiUniversity,Japan 
Qi Li IbarakiUniversity,Japan 
Surguei Elizarov InternisI.td,Moscow,Russia 
摘要:
关键词:  实验调查 地震学 声学 自然灾害
DOI:
分类号:
基金项目:国家自然科学基金(10232050 and 40004002)%the Project of Education of Chinese Academy of Science%国家重点基础研究发展计划(973计划)(2002 CB412706)
Experimental Research on the Load/Unload Response Ratio (LURR) Theory
Yu Huaizhong,Yin Xiangchu,Liang Naigang,Xia Mengfen,Li Min,Xu Zhaoyong,Peng Keyin,Victor Kukshenko,Wu Zhishen,Qi Li,Surguei Elizarov
Abstract:
Implementing acoustic emission experiments with large rock samples, LURR (Load/Unload Response Ratio) theory was studied. The loading conditions in the experiments were designed to simulate the complicated loading process of underground rocks. The damages emerging inside the rock samples were recorded by the acoustic emission technique during the loading process. The experimental results were consistent with prediction by LURR theory. Integrating the changing processes of LURR value Y and the location process of acoustic emission events showed agreement between the variation of LURR value Y and the damage evolution inside the rocks. Furthermore, the high value of Y emerged before the complete breakdown of materials. Therefore, the damage evolution of rock specimen can be quantitatively analyzed with LURR theory, thus the failure of the rock materials and the earthquake occurrence may be predicted. The experimental results gave a further verification of LURR theory.
Key words:  Load/Unload Response Ratio  Acoustic emission  Circling load  Large sample  Critical sensitivity