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。
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.
针对煤矿回采巷道的特点，设计研制出适合回采巷道煤帮支护用的杆体全长可回收水泥锚固金属锚杆。
Considering the characteristics of the mine gateway, full length recoverable cement metal bolt applicable to wall support in the mine gateway was designed and developed.
本文就金属网在锚网支护中的作用机理及金属网加固的作用的力学计算，做了进一步的探讨和分析。
In this article, the author made a further exploration and analysis on mechanical calculation of the metal net's acting mechanism in bolt net support and the strengthening role of mental net.
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