Geomechanics and Engineering

  • 제12권1호
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  • Pages.1-8
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Determination of spalling strength of rock by incident waveform

  • Tao, Ming (School of Resources and Safety Engineering, Central South University) ;
  • Zhao, Huatao (School of Resources and Safety Engineering, Central South University) ;
  • Li, Xibing (School of Resources and Safety Engineering, Central South University) ;
  • Ma, Jialu (Institute of Engineering mechanics, China Earthquake Administration) ;
  • Du, Kun (School of Resources and Safety Engineering, Central South University) ;
  • Xie, Xiaofeng (School of Resources and Safety Engineering, Central South University)
  • 투고 : 2016.03.03
  • 심사 : 2016.09.18
  • 발행 : 2017.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

An experimental technique for determining the spalling strength of rock-like materials under a high strain rate is developed. It is observed that the spalling strength of a specimen can be determined by only knowing the wavelength, loading peak value and length of the first spallation of an incident wave under a specific loading waveform. Using this method in combination with a split-Hopkinson pressure bar (SHPB) and other experimental devices, the spalling strength of granite specimens under a high strain rate is tested. Comparisons with other experimental results show that the new measuring method can accurately calculate the dynamic tensile strength of rock materials under a high strain rate.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Central South University

참고문헌

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  3. Management of Various Safety Parameters in Tunnel Construction: A Critical Review vol.170, pp.None, 2017, https://doi.org/10.1051/e3sconf/202017006003