基于声发射试验与线弹性能判据的玲南金矿岩爆研究

doi:10.13722/j.cnki.jrme.2014.0432

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摘要以玲南金矿深部赋存的中粗粒二长花岗岩、蚀变带矿石为研究对象，现场取样并使用GAW–2000型微机控制电液伺服刚性压力试验机进行单轴压缩破坏试验，借助AE21C声发射检测系统对试件的加载破坏全过程进行声发射响应信号记录；通过对试验结果进行分析，揭示玲南矿区深部赋存两种岩石的破坏及声发射响应特征；在室内岩石力学试验与现场调研的基础上，结合线弹性能判据，确定玲南金矿十九中段不同岩石的岩爆倾向性，并通过将判别结果与声发射结果、现场情况进行对比，发现中等岩爆倾向的岩石的声发射能量累积计数是低等岩爆倾向值的15倍以上，因此对于借助室内声发射测试技术的能量累积计数率来快速判断岩石岩爆倾向性具有一定的参考价值，并可在进一步的研究中将其应用到现场预测当中。

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关键词 ：岩石力学, 线弹性能, 声发射试验, 岩爆预测

Abstract：To get the acoustic emission(AE) characteristics of deep monzogranite and altered minerals in Lingnan gold mine during the whole failure process of loading，uniaxial compression tests were carried out using GAW–2000 microcomputer controlled electro-hydraulic servo rigidity pressure testing machine，and the acoustic emission signal was received by AE21C acoustic emission testing system. The experiment results were shown the failure and acoustic emission characteristics of the two deep rocks. Then，based on indoor rock mechanics test and on site investigation，the rock burst proneness for different rock samples in nineteenth level were determined according to the linear elastic energy criterion. Finally，the results were compared with the acoustic emission data and site actual situation，which revealed accumulating counts of acoustic emission energy for medium rock burst tendency was 15 times higher than low rock burst tendency. Therefore， accumulating counts got from indoor acoustic emission testing technology had a reference value in quickly determine the rock burst proneness， and could be used in field prediction.

Key words： rock mechanics linear elastic energy criterion acoustic emission test prediction of rock burst

引用本文:

张子健1，2，纪洪广1，2，张月征1，2，陈志杰1，2，周丁辉3. 基于声发射试验与线弹性能判据的玲南金矿岩爆研究[J]. 岩石力学与工程学报, 2015, 34(s1): 3249-3255.
ZHANG Zijian1，2，JI Hongguang1，2，ZHANG Yuezheng1，2，CHEN Zhijie1，2，ZHOU Dinghui3. ROCKBURST RESEARCH OF LINGNAN GOLD MINE BASED ON ACOUSTIC EMISSION TEST AND LINEAR ELASTIC ENERGY CRITERIONS. , 2015, 34(s1): 3249-3255.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.0432 或 http://www.rockmech.org/CN/Y2015/V34/Is1/3249

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