Earth Science Frontiers ›› 2023, Vol. 30 ›› Issue (2): 548-560.DOI: 10.13745/j.esf.sf.2022.2.69

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The clustering feature of time-space distributions of coal mine disasters and earthquake activities in China—an in-depth investigation

CHEN Bo()   

  1. Logging Technology Research Institute of CNPC Logging Company, Beijing 102200, China
  • Received:2021-12-20 Revised:2022-02-22 Online:2023-03-25 Published:2023-01-05


The previous research on the time-space distribution features of coal mine disasters and earthquakes is a preliminary exploration on the basis of natural earthquakes. With microearthquakes added and time-space analysis methods improved, this paper obtains more comprehensive time-space distribution features. On the whole, the basic knowledge of the clustering feature of coal mine disasters and earthquakes remains unchanged. The data show that the number of clustering events increases significantly while the spatial range of clustering events decreases sharply, which, according to analysis, is primarily due to the close proximity between the high frequency microearthquakes and mining accident areas. Furthermore, the spatial range and duration of stress disturbance correspond to the degrees of spatial and temporal clustering, and this finding is of great significance to the scientific research and mining production. Based on the clustering research methods, a temporal threshold of 7 days and a spatial threshold of 27 km is obtained, meaning once a stress disturbance event occurs in the mining area, stress disturbance events may occur within 7 days and a 27 km radius. Still, typical cases show that the range of coal mine disasters and macroearthquakes can reach more than 100 km. The complete data of clustering events are available online ( The time-space thresholds obtained here are for reference only.

Key words: earthquake, coal mine disaster, clustering, clustering events

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