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为研究泥质岩风化崩解现象与过程,揭示其内在机理和影响因素,在现场地质调查和室内分析试验的基础上,对几种典型泥质岩风化崩解进行了观察与成分测试。调查研究表明,泥质岩风化崩解可分为干裂收缩、结构重造和风化剥落3个阶段;泥质岩的风化崩解从岩石表层开始;细观结构的改变不受原有岩石的结构面控制;岩石风化崩解能力的控制性因素是岩石的粘粒含量、黏土矿物成分、比表面积和胶结物成分,这些因素具有很好的相关性;岩石内部微结构的破坏是崩解的前提。
In order to study the phenomenon of weathering and disintegration of mudstone and reveal its internal mechanism and influencing factors, the weathering and disintegration of several typical muddy rocks were observed and tested on the basis of on-site geological survey and laboratory analysis. The investigation shows that the weathering and disintegration of mudstone can be divided into three stages: dry shrinkage, structural remolding and weathering and exfoliation; the weathering and disintegration of the mudstone begin from the surface of the rock; and the change of meso-structure does not depend on the structure of the original rock Surface control. The controlling factors of weathering and disintegration of rock are the clay content, clay mineral composition, specific surface area and cement composition of rock, which have good correlations. The destruction of microstructure inside rock is the premise of disintegration .