金属支护立柱对巷道无线传输特性的影响  

Effect of Metallic Pit Prop on Transmission Characteristics in Tunnel

作　　者：张传雷[1] 孙继平[1] 刘珺[2] 

机构地区：[1]中国矿业大学信息工程研究所,北京海淀区100083 [2]河北农业大学人文学院,河北保定710075

出　　处：《电子科技大学学报》2007年第2期227-229,共3页Journal of University of Electronic Science and Technology of China

基　　金：教育部博士点基金资助项目(20030290019)

摘　　要：针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题,提出用分叉波导模型并用模式匹配法和多模传输理论分析传输特性。用模式匹配法求出不连续面的阻抗变换公式,利用多模传输理论求出整个不连续问题的散射参数,得出了均匀区域的基模电压反射系数与工作频率和支护立柱排数及立柱直径的关系。The effect of metallic pit prop on transmission characteristics in tunnel is studied. A fork waveguide model is proposed and the mode matching and multi-mode network technique are used to analyze the transmission characteristics of rectangular tunnel with metallic pit prop. The change of the reflection coefficient of dominant mode with working frequency, the row number of metallic pit prop, and pit prop diameter are obtained, respectively. The present approach can be used to analyze other discontinuity problems caused by metallic obstacle in rectangular tunnel.

关 键 词：模式匹配 支护立柱 传榆特性 巷道 

分 类 号：TD65[矿业工程—矿山机电]