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has been cited by the following article:

• TITLE: Theoretical Study of Coupling Mechanism between FBG and Shock Waves of Rock Burst

  AUTHORS: Shiming Wei, Zesheng Zhang, Yao Wang

  KEYWORDS: Rock Burst, FBG, Shock Waves, Lithological Characteristics

  JOURNAL NAME: World Journal of Engineering and Technology, Vol.8 No.4, November 25, 2020

  ABSTRACT: To achieve the monitor of rock burst in coal mine with fiber Bragg grating (FBG) sensing, the coupling mechanism between FBG and shock waves was theoretically analyzed. Based on Housner’s random shock model, the coupling mechanism between shock waves and FBG was theoretically analyzed. The result shows that the wave will change the period Ʌand effective refractive index n of FBG, and further affect the initial wavelength value. The amplitude, phase and frequency of shock wave are directly related to the wavelength drifts of FBG. The transmitting velocity of shock wave in rock is affected by lithologic characteristics. The Elastic modulus, density and Poisson’s ratio of rock influence the initial wavelength value of FBG. This study provided a theoretical basis and practical application guidance for coal or rock burst monitoring with FBG sensing.