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鄂东地区许多小型矿山经多年空场法开采,已形成大量采空区。资金缺乏使得小型矿山只能选用简易的单通道YSSC型岩体声发射监测仪,人工定时定点读数,监测重点区域。以垴窖铁矿为例,通过有限元数值分析,将声发射监测点布置在声发射源可能发生的区域(即应力集中区),解决该仪器无法对声发射源定位的问题。信号去噪则是通过非生产时段的声发射监测,直接避免噪音干扰监测数据,提高预测强地压活动的准确性,以保证矿山安全生产。
Many small mines in eastern part of Hubei have been mined for many years and have formed a large number of goafs. Lack of funds makes small-scale mines can only use a simple single-channel YSSC rock mass acoustic emission monitor, artificial fixed-point readings, monitoring key areas. Taking the Qiujiu iron mine as an example, the acoustic emission monitoring points are arranged in the possible area of acoustic emission sources (ie, the stress concentration area) by finite element numerical analysis to solve the problem that the apparatus can not locate the acoustic emission sources. Signal denoising is through non-production time of acoustic emission monitoring, noise monitoring data to avoid interference directly, to improve the accuracy of prediction of strong pressure to ensure mine safety in production.