地学前缘 ›› 2023, Vol. 30 ›› Issue (2): 548-560.DOI: 10.13745/j.esf.sf.2022.2.69

• 表层地球系统与生态环境效应 • 上一篇    

中国煤矿灾害与地震活动时空分布丛集特征的深入研究

陈波()   

  1. 中国石油测井公司测井技术研究院, 北京 102200
  • 收稿日期:2021-12-20 修回日期:2022-02-22 出版日期:2023-03-25 发布日期:2023-01-05
  • 作者简介:陈波(1975—),男,博士,工程师,从事煤矿灾害与地震活动影响关系研究工作。E-mail: chenbo3124@sina.com

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

摘要:

前期煤矿灾害与地震活动时空分布特征研究是基于天然地震事件开展的初步探索。本文在前期研究的基础上,添加微地震事件,完善了时空分析方法,获得了更为全面的时空分布特征。整体上,煤矿灾害群发及伴随地震两个基本认识不变。数据显示,群发序列数量显著增多,群发范围明显变小,分析认为微地震事件频次高且距离事故矿井较近是重要原因。应力扰动作用的空间范围和持续时间对应聚类研究中的空间丛集程度和时间丛集程度,科研和生产意义重大。本文借鉴了聚类研究的分析方法,获得27 km的参考空间阈值和7 d的参考时间阈值,显示煤矿附近一旦发生应力扰动事件,周边27 km范围,7 d内可能会发生其他应力扰动事件;同时,典型案例显示煤矿灾害与宏观地震活动群发范围仍然可达100 km以上。完整的群发数据将随本文一起发布(https://pan.baidu.com/s/1sjnCEh3),本文得出的数据仅供参考。

关键词: 地震, 煤矿灾害, 聚类, 群发

Abstract:

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 (https://pan.baidu.com/s/1sjnCEh3). The time-space thresholds obtained here are for reference only.

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

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