国内外从支护的观点出发,有多种岩石分类的方法。随着测试手段的发展和研究工作的深入,日益需要确定一种现场使用简便的分类方法,特别是关于软岩的概念及其相应的分类方法,更是当前工程技术中急待研究解决的问题。 At home and abroad from the point of view of support, there are a variety of rock classification methods. With the development of testing methods and research work, there is an increasing need to identify a classification method that is easy to use in the field. In particular, the concept of soft rock and its corresponding classification methods are more and more urgent problems to be solved in current engineering and technology .