| Simulation of Mine Electrical Penetration Technology |
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| 引用本文： | LIU Zhi-xin YUE Jian-hua LIU Shu-cai. Simulation of Mine Electrical Penetration Technology[J]. 中国矿业大学学报(英文版), 2007, 17(3): 326-329. DOI: 10.1016/S1006-1266(07)60098-4 |
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| 作者姓名： | LIU Zhi-xin YUE Jian-hua LIU Shu-cai |
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| 作者单位： | School of Resources and Geosciences China University of Mining ＆ Technology Xuzhou Jiangsu 221008, China |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金;国家自然科学基金 |
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| 摘 要： | Based on the principle of electrical penetration, the reflection characteristics of collapse columns at different locations of a working face is numerically simulated by using a 3D finite element method. The data collected by the electrical penetration is processed and interpreted using “tunnel penetration” which is similar to radio wave penetration. Reflection characteristics of collapse columns at different locations below floors of coal seams are analyzed, providing a new paradigm and a theoretical foundation for processing and interpreting electrical penetration data. The tomography analysis is made based on data simulation and calculation results and alltransmitting-receiving points are analyzed for their corresponding maximum attenuation values and maximum absorption coefficients. On the basis of this, a new method for precisely interpreting the spatial positions of geological anomalous bodies is suggested. The simulation shows that 1） the detection result of both roof and floors of the working face by electrical penetration is a volumetric effect and 2） there exists a corresponding relation between the detection depth and the working face width, with the op- timal detection depth within 40% of the workin face width.
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| 关 键 词： | 数字模拟 直流电穿透 音频电穿透 矿山 |
| 收稿时间： | 2006-11-11 |
| 修稿时间： | 2006-12-11 |
Simulation of Mine Electrical Penetration Technology |
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| LIU Zhi-xin,YUE Jian-hua,LIU Shu-cai. Simulation of Mine Electrical Penetration Technology[J]. Journal of China University of Mining and Technology, 2007, 17(3): 326-329. DOI: 10.1016/S1006-1266(07)60098-4 |
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| Authors: | LIU Zhi-xin YUE Jian-hua LIU Shu-cai |
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| Affiliation: | School of Resources Geosciences China University of Mining & Technology Xuzhou Jiangsu 221008, China |
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| Abstract: | Based on the principle of electrical penetration, the reflection characteristics of collapse columns at different locations of a working face is numerically simulated by using a 3D finite element method. The data collected by the electrical penetration is processed and interpreted using "tunnel penetration" which is similar to radio wave penetration. Reflection characteristics of collapse columns at different locations below floors of coal seams are analyzed, providing a new paradigm and a theoretical foundation for processing and interpreting electrical penetration data. The tomography analysis is made based on data simulation and calculation results and alltransmitting-receiving points are analyzed for their corresponding maximum attenuation values and maximum absorption coefficients. On the basis of this, a new method for precisely interpreting the spatial positions of geological anomalous bodies is suggested. The simulation shows that 1) the detection result of both roof and floors of the working face by electrical penetration is a volumetric effect and 2) there exists a corresponding relation between the detection depth and the working face width, with the optimal detection depth within 40% of the working face width. |
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| Keywords: | numerical simulation DC electrical penetration audio-frequency electrical penetration |
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