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Propagation Characteristics of Blasting Stress Waves in Layered and Jointed Rock Caverns

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Abstract

The existence of joint fissures makes explosive actions between rock masses more complex. Therefore, it is of great significance to carry out experiments studying blasting stress waves propagating in jointed rock masses. Based on the Froude Similarity principle, the geological mechanical models of intact rock masses and jointed rocks have been proposed. A blasting vibration experiment was carried out and demonstrated that the propagation of the blasting stress waves and changing structures have an important relationship. A numerical simulation of the blasting stress wave propagation law in a layered jointed rock mass was carried out. This study found that with an increase in the joint angle, the peak velocity of blasting stress wave, transmission coefficient and reflection coefficient all gradually increased, while the attenuation coefficient gradually decreased. With an increase in joint spacing, the attenuation rate of the blasting stress waves increased.

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Acknowledgements

The authors would like to acknowledge the support of the National Natural Science Foundation of China (NO.51204098).

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Authors and Affiliations

  1. College of Nuclear Resources Engineering, University of South China, Hengyang, 421001, Hunan, China

    Sheng Zeng, Shaoping Wang & Qibing Liu

  2. College of Civil Engineering, University of South China, Hengyang, 421001, Hunan, China

    Bing Sun

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  1. Sheng Zeng
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  2. Shaoping Wang
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  3. Bing Sun
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  4. Qibing Liu
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Correspondence to Bing Sun.

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Zeng, S., Wang, S., Sun, B. et al. Propagation Characteristics of Blasting Stress Waves in Layered and Jointed Rock Caverns. Geotech Geol Eng 36, 1559–1573 (2018). https://doi.org/10.1007/s10706-017-0410-x

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  • DOI: https://doi.org/10.1007/s10706-017-0410-x

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