| 一种改进的声发射P波到时自动提取算法 |
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| 引用本文： | 刘飞跃,杨天鸿,邓文学,张鹏海.一种改进的声发射P波到时自动提取算法[J].东北大学学报(自然科学版),2018,39(12):1774-1778. |
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| 作者姓名： | 刘飞跃 杨天鸿 邓文学 张鹏海 |
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| 作者单位： | (东北大学 资源与土木工程学院， 辽宁 沈阳110819) |
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| 基金项目： | 国家自然科学基金资助项目(51171041).国家自然科学基金资助项目(51604062)； 国家重点基础研究发展计划项目(2016YFC0801602). |
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| 摘 要： | 岩石破裂过程中的声发射(AE)监测技术已广泛应用于岩石工程领域，声发射信号的到时提取是深入开展岩石力学声发射研究的基础和关键.为了获取更为准确的声发射信号P波到时，在前人研究的基础上，提出了一种改进的Pphase-Picker声发射P波到时自动提取算法并对其原理进行详细描述.选取1000个典型声发射波形，对比分析了几种到时自动提取算法的计算结果，表明改进的算法不仅可以获取更为精确的P波到时，还可以获取到时提取误差的估计值.
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| 关 键 词： | P波到时提取 Pphase-Picker算法 置信度 误差估计 声发射 |
An Improved Automatic Algorithm of Acoustic Emission P-Wave Arrival Time Picking |
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| LIU Fei-yue,YANG Tian-hong,DENG Wen-xue,ZHANG Peng-hai.An Improved Automatic Algorithm of Acoustic Emission P-Wave Arrival Time Picking[J].Journal of Northeastern University(Natural Science),2018,39(12):1774-1778. |
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| Authors: | LIU Fei-yue YANG Tian-hong DENG Wen-xue ZHANG Peng-hai |
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| Institution: | School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China. |
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| Abstract: | Acoustic emission(AE)monitoring technique has been widely applied in the area of geotechnical engineering. Automated arrival time picking of P-wave is the fundament and key in the further rock mechanical AE study. In order to get the more accurate arrival time of AE single， an improved Pphase-Picker P-wave arrival time picking algorithm was proposed and its principle was described in detail. Several automatic arrival time picking algorithm were compared in 1000 typical AE wave， the result indicated that the improved algorithm can not only get a more accurate P-wave arrival time rapidly， but also can get an error estimation of P-wave arrival time. |
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| Keywords: | P-wave arrival time picking Pphase-Picker algorithm certain degree error estimation acoustic emission |
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