微震监测系统在朱集矿首采工作面安全生产中的应用

doi:10.11799/ce201605024

煤炭工程 ›› 2016, Vol. 48 ›› Issue (5): 74-76.doi: 10.11799/ce201605024

微震监测系统在朱集矿首采工作面安全生产中的应用

余国锋¹,刘超²

1. 煤矿瓦斯治理国家工程研究中心
2. 西安科技大学

收稿日期:2015-03-04 修回日期:2015-05-12 出版日期:2016-05-10 发布日期:2016-06-15
通讯作者: 刘超 E-mail:liuchao_2001@163.com

Analysis of microseismic monitoring and fore-warning for roof rock bursts in the first mining face at Zhuji coal mine

¹,

Received:2015-03-04 Revised:2015-05-12 Online:2016-05-10 Published:2016-06-15

摘要/Abstract

摘要： 为了实现对朱集矿首采面回采期间顶板的安全有效管理，从ESG公司引进一套矿山微震监测系统MMS(Microseismic Monitoring System)，采取现场工业性试验的方法，对工作面上覆岩层的微震活动实施连续监测。结果表明：微震事件主要分布在顶板岩层中，煤层和底板事件很少，且事件主要位于工作面前方，工作面及其后方事件较少|微震事件的发生具有明显的周期性|首采面覆岩的裂隙主要分布区间为-840～-880m之间(距地表垂距)|次要分布区间为-800～-840m、-880～-900m。以上试验结果为工作面覆岩动力灾害的预测及裂隙带的瓦斯抽采提供了依据。

关键词: 微震监测, 动力灾害, 首采工作面, 覆岩, 安全生产

Abstract: Combining with the micro seismic monitoring data, this paper analyzed seismic signal in the process of the first mining face of Zhu Ji and showed that: 1, The micro seismic events are mainly distributed in the roof and located in front of the working face; 2, The seismic activity is closely related to the mining activities; 3, The influence of the mining stress can spread about 120 m in front of the working face ; 4, There are portents when the rock bursts is about to happen. First, the seismic frequency is at a relatively high value, while the seismic energy is relatively low at the previous day that the rock bursts happened. Second, seismic events have an obvious trend of development behind first mining face, and events after surface increase significantly until the occurrence of the dynamic phenomena.

中图分类号:

TD324

刘超，余国锋，王龙. 微震监测系统在朱集矿首采工作面安全生产中的应用[J]. 煤炭工程, 2016, 48(5): 74-76.

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微震监测系统在朱集矿首采工作面安全生产中的应用

Analysis of microseismic monitoring and fore-warning for roof rock bursts in the first mining face at Zhuji coal mine

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