Couple analyzing the acoustic emission characters from hard composite rock fracture

Xingping Lai, Linhai Wang, Meifeng Cai

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    Cite this article as:

    Xingping Lai, Linhai Wang, and Meifeng Cai, Couple analyzing the acoustic emission characters from hard composite rock fracture, J. Univ. Sci. Technol. Beijing , 11(2004), No. 2, pp.97-100.
    Xingping Lai, Linhai Wang, and Meifeng Cai, Couple analyzing the acoustic emission characters from hard composite rock fracture, J. Univ. Sci. Technol. Beijing , 11(2004), No. 2, pp.97-100.
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    Couple analyzing the acoustic emission characters from hard composite rock fracture

    • Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China

    • The Key Lab of West Mine Mining & Hazard Control of the Ministry of Education of China, Xi'an University of Science and Technology, Xi'an 710054, China

    基金项目: 

    This work was financially supported by the Natural Science Foundation of Shannxi Province (No.2003E213), the Doctoral Foundation of the Ministry of Education of China (No.20020008021), and the National Natural Science Foundation of China (No.50074002).

      通信作者:

      Xingping Lai E-mail: lxptest@sina.com

    中文摘要

    Rock mass is fractured media. Its fracture is a nonlinear process. The accumulation of acoustic emission (AE) is closely related to the degree of damage. The dynamics problem is simply described based on the non-equilibrium statistical theory of crack evolvement, trying to use the hybrid analysis of the statistical theory and scan electron microscopy (SEM), the characters of AE sig nals from rock damage in a mined-out area is synthetically analyzed and evaluated. These provide an evidence to reverse deduce and accurately infer the position of rock fracture for dynamical hazard control.

     

    Mineral

    Couple analyzing the acoustic emission characters from hard composite rock fracture

    Author Affilications

      • Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China

      • The Key Lab of West Mine Mining & Hazard Control of the Ministry of Education of China, Xi'an University of Science and Technology, Xi'an 710054, China

    • Funds: 

      This work was financially supported by the Natural Science Foundation of Shannxi Province (No.2003E213), the Doctoral Foundation of the Ministry of Education of China (No.20020008021), and the National Natural Science Foundation of China (No.50074002).

    • Received: 06 May 2003;
    Rock mass is fractured media. Its fracture is a nonlinear process. The accumulation of acoustic emission (AE) is closely related to the degree of damage. The dynamics problem is simply described based on the non-equilibrium statistical theory of crack evolvement, trying to use the hybrid analysis of the statistical theory and scan electron microscopy (SEM), the characters of AE sig nals from rock damage in a mined-out area is synthetically analyzed and evaluated. These provide an evidence to reverse deduce and accurately infer the position of rock fracture for dynamical hazard control.

     

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