| 基于数值模拟的锚杆锚固缺陷检测研究 |
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| 引用本文： | 董佳琦,刘怡明,林童,王润垚,孙晓云.基于数值模拟的锚杆锚固缺陷检测研究[J].中国矿业,2021,30(1). |
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| 作者姓名： | 董佳琦 刘怡明 林童 王润垚 孙晓云 |
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| 作者单位： | 石家庄铁道大学电气与电子工程学院,苏州大学机电工程学院,石家庄铁道大学电气与电子工程学院,石家庄铁道大学电气与电子工程学院,石家庄铁道大学电气与电子工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）“基于电磁超声导波技术的锚杆声学特征与智能检测研究” |
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| 摘 要： | 针对锚杆锚固中缺陷检测质量不高的问题,本文采用电磁超声技术完成锚杆质量检测,首先利用PCDISP软件获得频散曲线,确定最佳激励频率;然后应用COMSOL有限元仿真软件建立锚杆锚固三维模型,并设定偏置磁场最优参数,分析了锚固的有效长度、锚杆锈蚀深度和缺陷的大小对检测波形的影响;最后搭建物理实验平台,对采集到的回波信号进行分析,实验数据验证了数值分析结果的有效性。结果表明:电磁超声技术用于锚杆锚固质量检测,能有效检测出锚固有效长度和缺陷位置。
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| 关 键 词： | 电磁超声技术 COMSOL有限元仿真 锚杆锚固检测 |
| 收稿时间： | 2019/11/5 0:00:00 |
| 修稿时间： | 2021/1/16 0:00:00 |
Study on the detection of anchorage defects based on numerical simulation |
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| DONG Jiaqi,LIU Yiming,LIN Tong,WANG Runyao and SUN Xiaoyun.Study on the detection of anchorage defects based on numerical simulation[J].China Mining Magazine,2021,30(1). |
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| Authors: | DONG Jiaqi LIU Yiming LIN Tong WANG Runyao and SUN Xiaoyun |
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| Affiliation: | School of Electrical Electronic Engineering, Shijiazhuang Tiedao University,School of Mechanical and Electrical Engineering, Soochow University,School of Electrical Electronic Engineering, Shijiazhuang Tiedao University,School of Electrical Electronic Engineering, Shijiazhuang Tiedao University,School of Electrical Electronic Engineering, Shijiazhuang Tiedao University |
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| Abstract: | In view of the problem that the quality of defect detection is not high in anchor bolt anchoring, this paper uses electromagnetic ultrasonic technology to complete the quality detection of anchor bolt. Firstly, pcdisp software is used to obtain the dispersion curve and determine the optimal excitation frequency. Then, COMSOL finite element simulation software is used to establish the three-dimensional model of anchor bolt anchoring, and the optimal parameters of bias magnetic field are set up. The effect of effective length of anchor, the depth of anchor bolt corrosion and the size of defects on the detection waveform is analyzed. Finally, a physical experiment platform is built to analyze the collected echo signal, and the experimental data verify the effectiveness of the numerical analysis results. The results show that the electromagnetic ultrasonic technology can effectively detect the effective length and defect position of the anchor when it is used in the anchor quality detection. |
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| Keywords: | Electromagnetic ultrasonic technology COMSOL finite element simulation anchorage quality testing |
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