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目前，隧道施工方法主要有钻爆法和综合机械化掘进法（简称“综掘法”）。机械化施工具有效率高、作业环境好和安全性高等特点，是会后隧道施工的必然趋势。掘进机皇综掘法的主要设备，是一种集切割吉石、装载、转运石碴、降尘等多种功能于一体的大型高效联合作业机械，具有连续掘进、无爆破震动、对围岂振动小、减少超挖、节约衬砌材料等优点。掘进机又分为全断面和部分断面掘进机。在大断面、长距离硬岂隧道的掘进中，全断面掘进机（ＴＢＭ）发挥了重要作用。例如，世界著名的英吉利海峡海底隧道就是用１１台全断面掘进机完成的；我国“西康”铁蹈中的奏岭隧道即采用两台德国产ＴＢ８８０Ｅ全断面掘进机施工，单台平均月进尺３１２ｍ，最高日进尺４０．５ｍ，取得了很好的施工效果。但是全断面掘进机作业线投资偏高，对隧道围岂地质和断面适应性差，影响了其使用的广泛推广。臂式掘进机是一种部分断面掘进机，其截割臂可以上下、左右自由摆动，能切割任意型状的隧道断面。臂式掘进机集开挖、装碴和自动行走于一身，进退自如，操作灵活，对复杂地质适应性强，便于支护，可以适应中、软岩隧道不同的施工方法，因此是中小型中、软岩隧道的理想开挖工具。
At present, the tunnel construction methods are mainly drilling and blasting method and comprehensive mechanized excavation method (referred to as “fully excavation method”). Mechanized construction with high efficiency, good operating environment and high security features, is the inevitable trend after the tunnel construction. The main equipment of boring machine king digging method is a large-scale high-efficiency joint operation machine that integrates the functions of cutting stone, loading, transporting ballast, dust reduction and the like and has the advantages of continuous boring, no blasting vibration, Small, reduce over-excavation, saving lining material and so on. Roadheader is divided into full-section and some sections boring machine. Full-face boring machines (TBM) play an important role in the driving of large sections and long distances. For example, the world-famous English Channel Tunnel is completed with 11 full-face boring machines. In the “Xikang” Iron Ridge Tunnel in China, two German-made TB880E full-face boring machines are used to construct the average tunnel footage of 312m , The maximum daily footage 40.5m, made a very good construction effect. However, full-face boring machine operating line investment is high, the tunnel surrounding the geological and cross-section poor adaptability, affecting the widespread use of its promotion. An arm boring machine is a partial cross-section boring machine whose cutting arm can swing freely up and down and left and right to cut any section of the tunnel. The arm boring machine integrates excavation, ballasting and automatic walking in one, with ease of movement, flexible operation, strong adaptability to complex geology, easy support, and adaptable to different construction methods of medium and soft rock tunnels. Therefore, Ideal for excavation of soft rock tunnels.