综放工作面多指标耦合防冲研究

    Rock Burst Control Study on Multi-index Coupling in Fully Mechanized Caving Face

    • 摘要: 某矿2120综放工作面具有中等冲击危险性,所采煤层具有弱冲击危险特征,所在的21采区采掘过程中大能量震动事件频繁发生,通过对该矿SOS微震和ARES-5/E地音监测系统数据分析,提出了采用多参量耦合分析预测预报大能量震动的发生,并通过Z-MAP值、A(t)值、AP值、活动度S值与G11通道声发射数据耦合,得到了多种指标与声发射之间的耦合规律,准确性达到75%以上。

       

      Abstract: A mine 2120 fully mechanized caving face has a moderate rock burst hazard, the seam has a weak rock burst risk characteristics, and large energy shock events occur frequently in 21 mining area in the mining process. Based on the data analysis from SOS microseismic and ARES-5/E ground sound monitoring system, the paper puts forward a multi-parameter coupled analysis to forecast high energy shock, and through the coupling of Z-MAP value, A(t) value, AP value, activity value S and G11 channel acoustic emission data, the paper gets the coupling rule between a variety of indicators and AE, and accuracy reaches more than 75%.

       

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