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XIANG Peng, SU Xiaobo, JI Hongguang, JIANG Hua, PEI Feng. Temporal and Spatial Distribution Characteristics of Micro-seisms and Premonition of Rock Burst Under High Tectonic Stress[J]. Safety in Coal Mines, 2018, 49(2): 177-181.
Citation: XIANG Peng, SU Xiaobo, JI Hongguang, JIANG Hua, PEI Feng. Temporal and Spatial Distribution Characteristics of Micro-seisms and Premonition of Rock Burst Under High Tectonic Stress[J]. Safety in Coal Mines, 2018, 49(2): 177-181.
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Temporal and Spatial Distribution Characteristics of Micro-seisms and Premonition of Rock Burst Under High Tectonic Stress

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  • Published Date: February 19, 2018
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  • Aiming at the prediction problem of coal mine rock burst, the relationship of micro-seismic energy and frequency and the spatial distribution characteristics of micro-seismic of 250105 working face in Huating Coal Mine were analyzed in order to investigate the mechanism and premonition of rock burst in this working face. Research shows that the rock bursts in 250105 working face are mainly occurred in the coal seam or floor, which are less than 220 m ahead of working face and most of them are near the pillar. The rock burst is mainly caused by hard coal seam or floor broken due to superposition of high tectonic stress, abutment pressure of support and residual abutment pressure. Micro-seismic frequency and energy conform to a “peak-down-up-impact” model before the rock burst. It is found that the first principal component is consistent with the working face advancing direction by using the principal component to analyze the spatial distribution of micro-seismic point. Significant decrease or less than 55% in the variance contribution rate of the first principal component is considered to be one of the premonitions to the impact of ground pressure.
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    • References (15)
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