摘要
采用声发射与声波对云南大姚铜矿盘区开采过程进行监测分析，用声彼仪对支撑顶板的点柱进行监测；用ＹＳＳ声发射仪对采场四周的顶底柱进行声发射监测。分析结果表明：随着采场回采，空区体积不断增加，地音的总事件及能率不断增加，而点柱所测的声波速度反而降低，说明这两种监测手段对采场稳定性监测是行之有效的，且比较吻合。
The panel mining process of Dayao Copper Mine, Yunnan was monitored and analysed with acoustic emission(AE)and acoustic wave (AW)methods.The point pillars for supporting the roof were monitored with the acoustic wave meter.The acoustic emission monitoring of the roof and floor pillars surrounding the stopes was done with YSS acoustic emis-sion meter.The analysis results showed that,along with further stoping,the volunle of mined-out area,the total events and energy rate of ground sound were increased.Thc velocity of acoustic wave of the point pillars detected was decreased.It concluded that these two methods are effective and coin-cident for the monitoring of stope stability.
出处
《矿冶》
CAS
1995年第1期26-30,共5页
Mining And Metallurgy
