| The numerical simulation on electromagnetic wave attenuation characteristics of coal face in time-frequency domain |
| |
| 作者姓名： | 于师建 程久龙 刘家琦 |
| |
| 作者单位： | [1]School of Astronautics, Harbin Institute of Technology, Harbin 150001, China [2]Key Laboratory of Mine Disaster Prevention and Control, Shandong Science and Technology University, Qingdao 266510, China |
| |
| 基金项目： | Supported by the Program for the National Natural Science Foundation of China （50534080）; the New Century Excellent Talents in University of China （NCET-05-0602）; the Research Fund for the Doctoral Program of Higher Education of China （20060424001）; the Research Award Fund for the Excellent Youth Scientist of Shandong Province（2006BS08006）. |
| |
| 摘 要： |
|
| 关 键 词： | 煤矿表面 电磁波 数字模拟 时间频率 |
The numerical simulation on electromagnetic wave attenuation characteristics of coal face in time-frequency domain |
| |
| YU Shi-jian, Cheng Jiu-Iong, LIU Jia-qi.The numerical simulation on electromagnetic wave attenuation characteristics of coal face in time-frequency domain[J].Journal of Coal Science & Engineering(China),2007,13(4):405-409. |
| |
| Authors: | YU Shi-jian Cheng Jiu-Iong LIU Jia-qi |
| |
| Affiliation: | 1. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China; 2. Key Laboratory of Mine Disaster Prevention and Control, Shandong Science and Technology University, Qingdao 266510, China |
| |
| Abstract: | This paper took the abnormal geological objects with high or low resistivity in the coal face as the background to establish the physical model. 2D forward numerical simulation for electromagnetic wave equation was implemented by the finite-difference scheme. According to the simulative results, the attenuation-absorption coefficient were calculated respectively based on field intensity and frequency shift parameter. Research result indicates, when coal-bed contains high electric resistivity geological abnormal object or low electric resistivity geological abnormal object, absorption attenuation function researched by frequency shift parameter of electromagnetic wave signal is more sensitive than by electromagnetic field intensity parameter. |
| |
| Keywords: | coal face electromagnetic wave attenuation frequency shift numerical simulation |
| 本文献已被 维普 等数据库收录！ |
