煤炭工程 ›› 2020, Vol. 52 ›› Issue (10): 86-91.doi: 10.11799/ce202010018

• 研究探讨 • 上一篇    下一篇

矿山微震震源能量表达方法与应用研究

王建群1,朱权洁2,张尔辉2   

  1. 1. 贵州省煤矿设计研究院
    2. 华北科技学院
  • 收稿日期:2020-04-24 修回日期:2020-07-08 出版日期:2020-10-16 发布日期:2020-12-11
  • 通讯作者: 张尔辉 E-mail:1440805440@qq.com

A Method about Micro-seismic Energy Expressions in Mine

  • Received:2020-04-24 Revised:2020-07-08 Online:2020-10-16 Published:2020-12-11

摘要: 为了克服传统微震监测预报方法采用对微震事件发生频度、数量和定位上,不能从单一的微震事件上进行判断的技术弊端。借鉴于天然地震能量理论,提出了一种建立矿山微震震源能量求解的方法,并建立了震源点实际能量与微震监测能量的关系式。研究了以炸药当量表述微震震源能量,通过炸药当量与震级的关系,基于震源能量求出矿震震级。现场研究结果表明:微震震源能量对预测矿难、预报周期来压、卸压效果评价、构造地带活化评价以及地压异常区域的确立,有着较为显著的意义。研究结果表明建立微震震源能量与炸药用药量、矿震震级的关系可以定量计算微震事件释放能量的大小,为矿山灾害的预警提供一种新的评判标准,可用于指导矿山安全生产。

关键词: 微震, 震源能量, 炸药当量, 震级, 爆破地震波

Abstract: Traditional method about micro-seismic monitoring and forecasting always use the micro-seismic events number, frequency and so on, cannot judge on the event itself. Based on previous studies, and refer from the natural seismic energy theory, this paper introduced a new source energy theory to establish the equation about micro-seismic and source energy, and expressed the micro-seismic source energy by explosives equivalent. We can obtain the relationship of magnitude, source energy and explosive charge. And according to the focal point micro-seismic energy, it can derive mine earthquake magnitude. Field studies have shown that, this method can be effectively applied to micro-seismic monitoring and forecasting.

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