Abstract:This paper proposes an experimental system to monitor the phenomenon of electromagnetic radiation during the granite failure. By conducting the self-expanding experiment of granite,the electromagnetic response on basis of cracking procedure is studied. The experimental results show that:in rock main rupture instantly,the largest electromagnetic radiation occurs with value of about 0.2 mV. The propagation,coalescence of microcracks lead rock to catastrophe failure accompanied by a strong electromagnetic signal. Electromagnetic radiation has directionality during rock fracture process;the frequency of the electromagnetic signal is low;and there is a characteristic frequency for releasing radiate energy in rupture process.
林 鹏. 含裂纹与孔洞缺陷介质的脆性破坏行为[J]. 岩石力学与工程学报,2002,21(8):1 283.(LIN Peng. Brittle failure behaviour of medium containing flaws and pores[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(8):1 283.(in Chinese))
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