| 基于阻抗级联模型的粗糙矿井巷道传播特性分析 |
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| 引用本文： | 王艳芬,马昌荣,孙彦景.基于阻抗级联模型的粗糙矿井巷道传播特性分析[J].太原理工大学学报,2011,42(1):11-14. |
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| 作者姓名： | 王艳芬 马昌荣 孙彦景 |
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| 作者单位： | 中国矿业大学,信息与电气工程学院,江苏,徐州,221116 |
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| 基金项目： | 国家自然科学基金资助(50904070) |
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| 摘 要： | 采用生成的随机粗糙面函数模仿矿井的粗糙壁,将井下巷道看作是具有频率色散的有耗传输线,把巷道壁粗糙的影响模拟为具有损耗的阻抗的级联,结合实际矿井环境建立了阻抗级联模型,分析了粗糙度等参数对传播特性的影响。得到以下结论:当粗糙壁均方根高度数值较大时,粗糙面的起伏深度增加,引起的粗糙附加损耗增大。相关长度较小时粗糙面起伏频繁,引起的粗糙附加损耗增大;接收功率减小,而且频率越高,影响越大。
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| 关 键 词： | 阻抗级联模型 矿井巷道 粗糙度 传播特性 |
Analysis on Propagation Characteristics of the Rough Mine Tunnel Based on the Cascade Impedance Model |
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| WANG Yan-fen,MA Chang-rong,SUN Yan-jing.Analysis on Propagation Characteristics of the Rough Mine Tunnel Based on the Cascade Impedance Model[J].Journal of Taiyuan University of Technology,2011,42(1):11-14. |
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| Authors: | WANG Yan-fen MA Chang-rong SUN Yan-jing |
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| Institution: | WANG Yan-fen,MA Chang-rong,SUN Yan-jing (School of Infor.and Electr.Engineering,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | This paper used the generated random rough surface function to imitate the roughness of the mine wall,regarding the mine channel as a loss transmission line with frequency dispersion and the impact of the channel rough wall as impedance cascade with losses.For the actual test environment of mine tunnels, the cascade impedance model was established,the impact of roughness and other parameter on the propagation characteristics were simulated and analyzed.The following conclusions were gained: when RMS height ... |
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| Keywords: | cascade impedance model mine tunnels roughness propagation characteristics |
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