| 基于多匝环形线圈的核磁共振信号响应计算与试验研究 |
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| 引用本文： | 易晓峰,李鹏飞,林君,段清明,蒋川东,李同.基于多匝环形线圈的核磁共振信号响应计算与试验研究[J].地球物理学报,2013,56(7):2484-2493. |
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| 作者姓名： | 易晓峰 李鹏飞 林君 段清明 蒋川东 李同 |
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| 作者单位： | 吉林大学地球信息探测仪器教育部重点实验室/仪器科学与电气工程学院, 长春 130026 |
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| 基金项目： | 国家重大科学仪器设备开发专项(2011YQ030133);科技部2010年度创新方法项目(2010IM031500);吉林大学博士研究生交叉学科科研资助建设项目(2011J011)资助 |
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| 摘 要： | 核磁共振接收信号的质量主要受探测天线的传递特性影响,当传递特性较差时,严重影响测量效果.结合目前国内外核磁共振找水仪天线的研制情况,给出了接收天线传递特性的计算方法,根据数值计算结果讨论了影响传递特性的天线参数.利用吉林大学研制的核磁共振找水仪进行实际测试,结果证明与讨论结果一致.本文得出的传递特性影响因素和接收信号质量评估方法,可以为不同类型核磁共振找水仪天线的设计提供依据,将促使核磁共振方法在复杂地形环境找水及隧道、矿井灾害水源探测等方面得到有效应用.
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| 关 键 词： | 核磁共振 传递特性 多匝线圈 地下水 |
| 收稿时间： | 2012-08-22 |
Simulation and experimental research of MRS response based on multi-turn loop |
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| YI Xiao-Feng,LI Peng-Fei,LIN Jun,DUAN Qing-Ming,JIANG Chuan-Dong,LI Tong.Simulation and experimental research of MRS response based on multi-turn loop[J].Chinese Journal of Geophysics,2013,56(7):2484-2493. |
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| Authors: | YI Xiao-Feng LI Peng-Fei LIN Jun DUAN Qing-Ming JIANG Chuan-Dong LI Tong |
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| Institution: | Key Laboratory of Geo-Exploration Instrumentation, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China |
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| Abstract: | The receiving signal of Magnetic Resonance Sounding (MRS) is mainly influenced by the transfer characteristic of detection coil, which can be significantly affected as the transfer characteristic plays an important role. After review of the recent studies around the world, the assessment method of transfer characteristic for receiver coil is proposed in this paper. Based on simulation results, the coil parameters depending on the transfer characteristic have been discussed. Furthermore, the field studies performed by JL-MRS Instrument were in accordance with the simulation analysis. The influence factors of transfer characteristic and the assessment method concerning the quality of the receiving signal can provide a basis of designing the coil in different types of MRS instruments. This study will enhance an effective application in water exploration under complex conditions and disaster-induced water detection in tunnel drilling and mine exploration. |
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| Keywords: | Magnetic resonance sounding Transfer characteristics Multi-turn loop Groundwater |
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