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Investigation on the Seismic Wave Propagation Characteristics Excited by Explosion Source in High-Steep Rock Slope Site Using Discrete Element Method

Author

Listed:
  • Danqing Song

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
    State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

  • Xuerui Quan

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China)

  • Mengxin Liu

    (School of Civil Engineering, Northeast Forestry University, Harbin 150040, China)

  • Chun Liu

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China)

  • Weihua Liu

    (SINOPEC Key Laboratory of Geophysics, Nanjing 211103, China)

  • Xiaoyu Wang

    (School of Civil Engineering, Northeast Forestry University, Harbin 150040, China)

  • Dechao Han

    (SINOPEC Key Laboratory of Geophysics, Nanjing 211103, China)

Abstract

The influence of seismic waves induced by explosion sources on the dynamic response characteristics of rock slope sites is one of the most important problems affecting engineering construction. To investigate the wave propagation characteristics and attenuation law of seismic waves induced by explosive sources in rock sites from the perspective of time and frequency domains, the high-performance matrix discrete element method (MatDEM) is used to carry out numerical simulation tests on a granite rock medium site. The discrete element model of the high-steep rock slope is established by MatDEM, and the dynamic analysis of the rock medium site is conducted by loading blasting vibration load to generate seismic waves. The results show that the seismic waves in the rock site present characteristics of arc propagation attenuation. The maximum attenuation rate of the dynamic response is the fastest within 0.3 s and 25 m from the explosion source. The slope region can weaken the dynamic response of seismic waves generated by the explosion source. In particular, the high-frequency band (>20 Hz) has an obvious filtering effect. The dynamic response of the P-wave induced by the explosive source is greater than that of the S-wave in the bedrock and surface region. The dynamic amplification effect of the P-wave is greater than that of the S-wave in the slope region. The seismic waves in the slope region show an attenuation effect along the slope surface and have a typical elevation amplification effect inside the slope.

Suggested Citation

  • Danqing Song & Xuerui Quan & Mengxin Liu & Chun Liu & Weihua Liu & Xiaoyu Wang & Dechao Han, 2022. "Investigation on the Seismic Wave Propagation Characteristics Excited by Explosion Source in High-Steep Rock Slope Site Using Discrete Element Method," Sustainability, MDPI, vol. 14(24), pages 1-22, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:24:p:17028-:d:1008009
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    References listed on IDEAS

    as
    1. Zhuo Chen & Danqing Song, 2021. "Numerical investigation of the recent Chenhecun landslide (Gansu, China) using the discrete element method," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 105(1), pages 717-733, January.
    2. Chen Xu & Yujie Zhu & Danqing Song & Xiaoli Liu & Wanli Guo & Enzhi Wang, 2022. "Spacing Optimization of the TBM Disc Cutter Rock Fragmentation, Based on the Energy Entropy Method," Sustainability, MDPI, vol. 14(20), pages 1-13, October.
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