| 聚焦电流法超前预报的有限元模拟 |
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| 引用本文： | 周丽,吴鸣.聚焦电流法超前预报的有限元模拟[J].安徽水利水电职业技术学院学报,2012,12(1):7-10. |
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| 作者姓名： | 周丽 吴鸣 |
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| 作者单位： | 嘉兴学院机电工程学院,浙江嘉兴,314001;浙江省地质调查院,浙江杭州,311203 |
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| 摘 要： | 文章用屏蔽电极控制电流方向,提出了2种电极布置方式,推出2种电极布置方式中三维电源场的基本方程、边值条件,用有限单元法对异常体位于坑道中间时的聚焦电流法超前探测进行三维正演模拟,根据建立的模型观测当异常体在坑道中间时随着掌子面不断靠近异常体归一化电位的变化曲线,分析设计的聚焦电流超前探测电极布置方式的可行性。
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| 关 键 词： | 超前预报 屏蔽电极 归一化电位 有限元 |
The finite element method for focused-electrical advanced detection |
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| ZHOU Li
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WU Ming.The finite element method for focused-electrical advanced detection[J].Journal of Anhui Technical College of Water Resources and Hydroelectric Power,2012,12(1):7-10. |
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| Authors: | ZHOU Li WU Ming |
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| Affiliation: | 1.Mechanical and Electrical Engineering College,Jiaxing University,Jiaxing 314001,China; 2.Zhejiang Institute of Geological Survey,Hangzhou 311202,China) |
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| Abstract: | Controlling the direction of current by the shielding electrode,two focused current electric layout is proposed for advanced forecast in tunnels.In this paper,the equation concerning the point-source electrical field in the 3-D structure and the 3-D boundary value are both presented.Then the focused current advanced detecting forecast is modeled by finite element method and the feasibility of electrode layout is discussed according to normalization of the potential curve when the abnormal body in the middle tunnel approaches the tunnel face. |
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| Keywords: | advanced forecast shielding electrode normalization of the potential finite element method |
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