| 声发射监测隧道围岩活动性 |
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| 引用本文： | 窦林名,何学秋.声发射监测隧道围岩活动性[J].应用声学,2002,21(5):25-29. |
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| 作者姓名： | 窦林名 何学秋 |
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| 作者单位： | 中国矿业大学,徐州,221008 |
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| 基金项目： | 国家自然科学基金资助项目（50074030,50174055），国家博士后基金资助项目 |
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| 摘 要： | 目的是确定隧道围岩变形破裂的活动性，保证上方近距离高层大楼的安全使用，采用EAE－04声电测试系统，以测试大楼及隧道围岩的活动性，采用声发射（AE）和电磁辐射（EME）信号上升沿时间和持续时间的关系，排除噪音等的影响，确定有效信号；采用AE频度和能量率的变化规律，EME脉冲数的变化规律，来分析隧道周围岩体的活动性并进行实时检测，为大楼及隧道的稳定性评价提供了依据。
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| 关 键 词： | 声发射 监测 隧道 电磁辐射 围岩活动性 |
Monitoring the rock activity around a tunnel with AE |
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| DOU Linming and HE Xueqiu.Monitoring the rock activity around a tunnel with AE[J].Applied Acoustics,2002,21(5):25-29. |
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| Authors: | DOU Linming and HE Xueqiu |
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| Institution: | China University of Mining & Technology, Xuzhou 221008;China University of Mining & Technology, Xuzhou 221008 |
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| Abstract: | The purpose of this paper is to determine the activities of rock deformation and failure around a tunnel, and to guaed the safety of a high building over the tunnel. The activities of building and rock around the tunnel were measured by using the EAE-04 acoustic and electromagnetic system. The effective AE (acoustic emission) & EME (electromagnetic emission) signals are determined, and the noises eliminated by referring to the relationship between the risetime and duration of the signal. The rock activity around the tunnel is analyzed by the AE count rate and the energy rate, and by EME pulse number. These results are used to evaluate the stability of the tunnel and the high building over it. |
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| Keywords: | Tunnel Building Acoustic emission (AE) Electromagnetic emission (EME) Rock activity |
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