摘要
由于溶蚀岩体独特的细观结构及其溶蚀发育的差异性,导致了现场原位实验和室内实验获得的单点强度值很难应用于工程中。以溶蚀砾岩为例,在现场调查的基础上,获得了砾岩的溶蚀发育规律,并建立起其概率统计模型,在此基础上利用FLAC3D建立起数值模型,并对其进行数值三轴试验,获得了其应力-应变曲线;同时,对不同溶蚀程度的砾岩进行数值三轴试验,获得了大量的强度参数,建立起溶蚀程度与强度之间的关系。另外,对溶蚀砾岩进行室内三轴实验,获得了其强度参数,并和数值试验取得了较为一致的结果。
The present paper proposes an evaluation of corrosion rock strength parameters approach to analyze the corrosion calcareous rock strength parameters.The parameters are obtained through laboratory and in situ tests and cannot apply to the engineering directly.The proposed approach utilizes a numerical model in conjunction with the distribution of corrosion.It is based on site investigation to analyze the strength parameters of the corrosion rock. The relationships between strength parameters and corrosion are determined.In the meantime,laboratory triaxial tests are carried out.The results show that the relationship built on the numerical model is correct.
出处
《工程地质学报》
CSCD
北大核心
2014年第6期1034-1038,共5页
Journal of Engineering Geology
基金
国家自然科学基金项目(No.41072230)资助
关键词
溶蚀砾岩
随机模型
三轴试验
强度参数
Calcareous gravelly rock Stochastic model Triaxial test Strength parameters
