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Characteristics and mechanisms of strain waves generated in rock by cylindrical explosive charges

  • Geological, Civil, Energy and Traffic Engineering
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Abstract

A superposing principle, by suitably adding the strain waves from a number of concentrated explosive charges to approximate the waves generated by a cylindrical charge based on the strain wave of a point or small spherical explosive charge generated in rock, is used to further study the triggering time of strain gauges installed in radial direction at same distances but different positions surrounding a cylindrical explosive charge in rock. The duration of the first compression phase and peak value of strain wave, and furthermore, their differences are analyzed and some explanations are given. Besides that, the gauge orientation in which the maximum peak value occurs is also discussed. At last, the effect of velocity of detonation (V.O.D.) of a cylindrical explosive charge on the strain waves generated in the surrounding rock is taken as key research and the pattern of peak amplitude of a strain wave varies with the V.O.D. is likely to have been found.

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Authors and Affiliations

  1. School of Resources and Safety Engineering, Central South University, Changsha, 410083, China

    Ke-wei Liu  (刘科伟), Xiao-han Li  (李萧翰) & Xi-bing Li  (李夕兵)

  2. Yuxi Mining Co. Ltd., Yunnan Copper Industry (Group), Yuxi, 653100, China

    Ke-wei Liu  (刘科伟), Zhi-hua Yao  (姚志华), Zong-xian Shu  (舒宗宪) & Ming-hua Yuan  (袁明华)

  3. Hunan Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines, Central South University, Changsha, 410083, China

    Ke-wei Liu  (刘科伟), Xiao-han Li  (李萧翰) & Xi-bing Li  (李夕兵)

Authors
  1. Ke-wei Liu  (刘科伟)
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  2. Xiao-han Li  (李萧翰)
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  3. Xi-bing Li  (李夕兵)
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  4. Zhi-hua Yao  (姚志华)
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  5. Zong-xian Shu  (舒宗宪)
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  6. Ming-hua Yuan  (袁明华)
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Correspondence to Ke-wei Liu  (刘科伟).

Additional information

Foundation item: Projects(51304239, 51374243) supported by the National Natural Science Foundation of China

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Liu, Kw., Li, Xh., Li, Xb. et al. Characteristics and mechanisms of strain waves generated in rock by cylindrical explosive charges. J. Cent. South Univ. 23, 2951–2957 (2016). https://doi.org/10.1007/s11771-016-3359-7

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  • DOI: https://doi.org/10.1007/s11771-016-3359-7

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