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Cantao Zhuangup, Su Xu. Weixue Zhangup, Zhaoyong Xuup2, Shirong Meiup3loans.com sh lucashadv. 1991: RECORDING OF WAVEFORMS AND LOCALIZATION OF ACOUSTIC EMISSION EVENTS PRODUCED IN ROCK SAMPLES. Acta Seismologica Sinica, 13(4): 489-495.
Citation: Cantao Zhuangup, Su Xu. Weixue Zhangup, Zhaoyong Xuup2, Shirong Meiup3loans.com sh lucashadv. 1991: RECORDING OF WAVEFORMS AND LOCALIZATION OF ACOUSTIC EMISSION EVENTS PRODUCED IN ROCK SAMPLES. Acta Seismologica Sinica, 13(4): 489-495.
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RECORDING OF WAVEFORMS AND LOCALIZATION OF ACOUSTIC EMISSION EVENTS PRODUCED IN ROCK SAMPLES

  • 1. Center for Analysis and Prediction. State Seismological Bureau; 2. Comptter Department. Academia Sinica; 3. Seismological Bureau of Yunnan Province

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  • Published Date: September 01, 2011
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    • Abstract
  • We have made the data collection and analysis system for recording microcracks in rock to study the three dimensional pattern of fracture and the dynamic properties of rock during pressurization. This system,with 8 channel data detection, records in real-time, from the initial microcracks to the final vibration waveform excited by the master fracture. The detected data are recorded by digital theharddiskofan IBM personal computerfor 286,386 personal computer) as well as transmitted to the disk. The sampling rate for each channel is 10 MHz.Collecting every acoustic emission events in the loaded rock sample with 8 channels by this system, mathematically modelling the AE event travel time, and taking the coordinates of the AE event hypocenter and the three components of P wave velocity as unknown parameters, we set up a set of residual equations for joint inversion, so that the three dimensional localization of AE event hypocenters can be completed under variable velocities, which will lay foundations for the research on rock fracture clearly.
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    • References (1)
  • [1] Sholz, C. H. , 1968. Experimental study of the fracturing process Res.，73, 41447——1454.

    [2] Mogi, K.，1968. Source locations of elastic shocks in the fracturin in brittle rock. J. Geophys process in rocks(1).Bull. Earthg. Res Inst. 46 1103——1125.

    [3] Sondergeld C. H. and Estey L. H——1981. Acoustic emission study of microfracturing during the cyclie loading of westerly granite. J. Geophys. Res.，86, 2915——2924.

    [4] 楠瀚勤一郎、西护修、小内薰 1982. 一轴压缩下の岩石中に观测AE空域.地震 35, 91——102.

    [5] 出原理、佐藤隆司、西织修、楠瀚勤一郎，1986.三轴压缩应力下て发生する AEの震源分布己发震机构.地震39,289——300.

    [1] Sholz, C. H. , 1968. Experimental study of the fracturing process Res.，73, 41447——1454.

    [2] Mogi, K.，1968. Source locations of elastic shocks in the fracturin in brittle rock. J. Geophys process in rocks(1).Bull. Earthg. Res Inst. 46 1103——1125.

    [3] Sondergeld C. H. and Estey L. H——1981. Acoustic emission study of microfracturing during the cyclie loading of westerly granite. J. Geophys. Res.，86, 2915——2924.

    [4] 楠瀚勤一郎、西护修、小内薰 1982. 一轴压缩下の岩石中に观测AE空域.地震 35, 91——102.

    [5] 出原理、佐藤隆司、西织修、楠瀚勤一郎，1986.三轴压缩应力下て发生する AEの震源分布己发震机构.地震39,289——300.
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