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Development of bolt stress online-monitoring system on wall rocks in metal mine

机译:金属矿山围岩锚杆应力在线监测系统的开发

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摘要

Bolt and wall rock should be regarded as a whole in the tunnel stability analysis.Based on the principle of bolt-rock combined action, a monitoring system of bolt stress and wall rock strain was developed, and a judging standard for the warning level of the rock stability was put forward, including the rock movement, rock moving velocity, rock moving acceleration, and the stress variation rate of bolt.The method was used in the PanGuShan mine, and a early-warning was made for some dangerous area.Based on the data acquisition of stress and strain of bolt, the system realized online monitoring by underground wireless transmission, it would be useful for the prevention of ground pressure disaster.
机译:在巷道稳定性分析中,应将螺栓和围岩作为一个整体来考虑。根据螺栓-岩联合作用的原理,建立了锚杆应力和围岩应变监测系统,并确定了锚杆和围岩的预警等级。提出了岩石的稳定性,包括岩石的运动,岩石的运动速度,岩石的运动加速度和锚杆的应力变化率,该方法在盘古山矿中使用,并对一些危险区域进行了预警。通过对螺栓应力和应变数据的采集,系统实现了地下无线传输的在线监测,对于预防地压灾害具有重要意义。

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