(1. School of Mechanics and Engineering，Liaoning Technical University，Fuxin，Liaoning 123000，China；2. State Key Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China)
Abstract：In order to obtain the effective precursory information of instability destruction of rock，a multi- parameter comprehensive monitoring system for rock deformation and failure process was set up to investigate the abnormal signals of rock samples due to external loads，includeing microseismic，charge induction，self-potential and acoustic emission，etc. The monitoring system is used to synchronously monitor the deformation and fracture process under different loading rates. The results show that there are obvious precursory signals including of microseismic，charge induction，self-potential and acoustic emission before the sample instability. The signals of microseismic，charge induction，self-potential and acoustic emission are obviously different for different rocks，and the signals of granite porphyry are more abundant than the signals of marble. The acoustic emission monitoring data can better reflect microcracks of rock. The acoustic emission can be used for microcracks location，and reflect the precursor information of charge induction，self-potential better. The signals of charge induction and self-potential during the deformation and failure process occur much earlier than microseismic signals，and the interference is smaller. So the early signals of charge induction and self-potential can be used for early warning. It is also shown that the rock is about to enter the instability and failure phase when the various parameter signals of synchronization and larger amplitude appear frequently. The microseismic and acoustic emission can be used for microcracks location. The precursor information of rock samples? instability destruction can be obtained accurately based on the comparative analysis of signals of microseismic，charge induction，self-potential and acoustic emission.
赵扬锋1，2，刘力强2，潘一山1，焦波波1，张 超1. 岩石变形破裂微震、电荷感应、自电位和声发射实验研究[J]. 岩石力学与工程学报, 2017, 36(1): 107-123.
ZHAO Yangfeng1，2，LIU Liqiang2，PAN Yishan1，JIAO Bobo1，ZHANG Chao1. Experiment study on microseismic，charge induction，self-potential and acoustic emission during fracture process of rocks. , 2017, 36(1): 107-123.
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2017, Vol. 36 
