红层软岩结构特征与工程评价初探

Engineering criterion of structure-stability of soft rocks of red beds

通过研究红层软岩风化程度、完整性、饱和单轴抗压强度、结构灵敏性、分散性、胶结系数、崩解性、不同尺度结构类型等工程参数与岩土体结构的关系,提出了岩土"结构稳定性"的工程概念与分析思路,初步建立了由结构类型、风化系数、完整性系数、坚硬程度、崩解模式、结构灵敏度、分散度、胶结系数等工程参数组成的红层岩土结构稳定性综合判别标准,将红层岩土分为结构稳定性强、结构稳定性中等、结构稳定性差三类,为理解红层岩土工程性能、工程安全设计等提供了参考。

The relationships were studied between the structure of soft rocks and engineering parameters followed： weathering,integrity,hardness,sensitivity,dispersion,cementation,slaking and different scale structure types.The analysis method of rock soil structure – stability was advanced.The engineering criterion of red beds structure-stability was established with weathering coefficient,integrity coefficient,hardness,structure-sensitivity,dispersion degree,cementation coefficient,slaking types and different scale structure types.According to the structure-stability criterion,the red beds were classified into three types： high structure-stability,meddling structure-stability and low structure-stability,as well as,the engineering geological characteristics of different structure-stability of red beds was summarized for the engineering practices of design and construction.