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<p>Near fault mining activities often induce complex stress disturbances that can lead to fault-slip rockbursts and seismic wave radiation. This sometimes causes significant hazards for underground operations. Accurate evaluation of possible dynamic fault ruptures under such stress conditions is essential for mining safety. In this study, focusing on the F16 reverse fault in the Yima coal field, we model the static fault slip distribution and dynamic rupture propagation under realistic tectonic stress conditions and layered geological structures using the finite element method. The key parameters we investigated include fault slip distribution, rupture velocity, moment magnitude, and moment rate function. The moment magnitudes were estimated between 2.4 and 2.6, consistent with the local magnitude of 2.7 observed during the “8.11” coal burst accident. The estimated rupture velocities were from 0.9&#xa0;km/s to 1.7&#xa0;km/s with the rupture duration between 73 and 76 ms. We also evaluated the maximum peak particle velocity (<i>PPV</i>) and maximum peak particle acceleration (<i>PPA</i>) on the roof of the mining face. The maximum <i>PPV</i> and <i>PPA</i> were 0.39&#xa0;m/s and 26.6&#xa0;m/s<sup>2</sup>, respectively, with dominant frequencies of 6 to 9&#xa0;Hz and 14 to 20&#xa0;Hz, respectively. These results will serve for designing robust, asymmetric support systems capable of withstanding dynamic loads and preventing resonance induced by seismic waves. This study provides a quantitative framework for assessing mining-induced seismic events and offers practical guidance for enhancing safety protocols in deep mining operations.</p>

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3- D Numerical Investigation of Mining-Induced Fault Rupture and Dynamic Loading Response

  • 期刊论文

  • 发表日期：

    2026年3月10日

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  • Yatao Li,
  • Eiichi Fukuyama

摘要

Near fault mining activities often induce complex stress disturbances that can lead to fault-slip rockbursts and seismic wave radiation. This sometimes causes significant hazards for underground operations. Accurate evaluation of possible dynamic fault ruptures under such stress conditions is essential for mining safety. In this study, focusing on the F16 reverse fault in the Yima coal field, we model the static fault slip distribution and dynamic rupture propagation under realistic tectonic stress conditions and layered geological structures using the finite element method. The key parameters we investigated include fault slip distribution, rupture velocity, moment magnitude, and moment rate function. The moment magnitudes were estimated between 2.4 and 2.6, consistent with the local magnitude of 2.7 observed during the “8.11” coal burst accident. The estimated rupture velocities were from 0.9 km/s to 1.7 km/s with the rupture duration between 73 and 76 ms. We also evaluated the maximum peak particle velocity (PPV) and maximum peak particle acceleration (PPA) on the roof of the mining face. The maximum PPV and PPA were 0.39 m/s and 26.6 m/s2, respectively, with dominant frequencies of 6 to 9 Hz and 14 to 20 Hz, respectively. These results will serve for designing robust, asymmetric support systems capable of withstanding dynamic loads and preventing resonance induced by seismic waves. This study provides a quantitative framework for assessing mining-induced seismic events and offers practical guidance for enhancing safety protocols in deep mining operations.