结合软岩隧道的特点，阐述了软岩隧道失稳原因、破坏特征及其形成的力学特征，分析软岩隧道各种支护方法的作用机理，对软岩隧道支护重点与对策进行了探讨，并对软岩隧道选择合理的支护方法提出了见解，以指导实践。%Combining with the features of soft rock tunnel, this paper elaborated the instability causes, failure characteristics and it formed mechanical characteristics of soft rock tunnel, analysed the action mechanism of a variety of shoring methods of soft rock tunnel, discussed the shoring key points and guide practice. of soft rock tunnel. Put forward opinions of choosing rational shoring methods of soft rock tunnel, so as to
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