吕鹏飞, 包鑫阳, 董红娟. 矿井工作面回采对微震活动的影响研究[J]. 中国矿业, 2020, 29(5): 120-125. DOI: 10.12075/j.issn.1004-4051.2020.05.007
    引用本文: 吕鹏飞, 包鑫阳, 董红娟. 矿井工作面回采对微震活动的影响研究[J]. 中国矿业, 2020, 29(5): 120-125. DOI: 10.12075/j.issn.1004-4051.2020.05.007
    LYU Pengfei, BAO Xinyang, DONG Hongjuan. Research on influence of microseismic activity by working face mining in coal mine[J]. CHINA MINING MAGAZINE, 2020, 29(5): 120-125. DOI: 10.12075/j.issn.1004-4051.2020.05.007
    Citation: LYU Pengfei, BAO Xinyang, DONG Hongjuan. Research on influence of microseismic activity by working face mining in coal mine[J]. CHINA MINING MAGAZINE, 2020, 29(5): 120-125. DOI: 10.12075/j.issn.1004-4051.2020.05.007

    矿井工作面回采对微震活动的影响研究

    Research on influence of microseismic activity by working face mining in coal mine

    • 摘要: 为有效揭示煤矿工作面矿震、冲击地压灾害的发生规律。结合东滩煤矿微震监测的震动能量、频次特征,工作面开采速度特征以及采动应力分布特征,研究了矿井工作面的回采参数对微震分布的影响规律。结果表明,工作面回采速度增加,大能量矿震爆发的非线性特征增强,工作面开采速度大于4 m/d时,工作面发生冲击地压可能性大大增加,匀慢速回采是降低大能量矿震事件爆发有效途径;大能量矿震爆发的周期特性在东滩煤矿4313工作面表现为100 m大周期内包含50 m的小周期;大能量矿震爆发与工作面整体应力环境正相关,周期来压、工作面“见方”时段为大能量矿震频发时段。

       

      Abstract: In order to reveal the occurrence characteristics of shock bump and rock burst.The influence of working face mining on microseismic distribution are researched combined shock energy, shock times, mining speed of working face and mining stress distributin in Dongtan coal mine.The results show that nonlinear characteristics of high energy shock bump mainfest along with the mining speed increasing.Uniform and slow mining is the effective way to decrease high energy shock bump.there has always been existing a period of energy accumulation and storage before the high energy mining earthquake breaks out in a surrounding cycle of about 100 m long which demonstrates that the gap between the great distance cycle and that of the small cycle would be at about 50 m in the aforementioned working face of the mine.High energy shock bump occurrence is positive correlation to the stress environmental of all working face.Periodic pressure, working face ”square” is the frequently occurrence time interval.

       

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