煤炭工程 ›› 2014, Vol. 46 ›› Issue (1): 80-82.doi: 10.11799/ce201401026

• 研究探讨 • 上一篇    下一篇

坚硬覆岩顶板条件下动力灾害危险性分析

潘卫东,李德林,宋文博   

  1. 中国矿业大学(北京)
  • 收稿日期:2013-07-26 修回日期:2013-02-27 出版日期:2014-01-10 发布日期:2014-01-10
  • 通讯作者: 李德林 E-mail:ldl0808.ok@163.com

Analysis on dynamic disaster under hard overburden

  • Received:2013-07-26 Revised:2013-02-27 Online:2014-01-10 Published:2014-01-10

摘要:

宣东煤矿煤层上方存在一层厚达200m的坚硬覆岩,通过理论分析、现场实测等方法,认为坚硬覆岩是其动力灾害发生的主要动力源。坚硬覆岩的跨度随回采工作面的推进而不断增加,聚集大量弹性能,为下方工作面开采埋下很大的动力灾害隐患。在此基础上结合动力灾害的致因提出具有针对性的防冲防突措施。

关键词: 动力灾害, 坚硬覆岩, 防治措施

Abstract:

There is a hard overburden which 200m thick above coal seam of Xuandong coal mine. Through theoretical analysis and field measurement think hard overburden is the main source of power to underground dynamic disaster. The span length is increasing with the face advance, besides it gathers a large amount of elastic energy, then, leaving hidden danger for the mining. Last, combining the cause of underground dynamic disaster put forward the targeted methods to prevent the occurrence of rock burst and coal and gas burst.

Key words: underground dynamic disaster, hard overburden, prevention measures