北京科技大学学报2012，Vol.34Issue(12)：1364-1370,7.
岩石材料脆性剪切破坏模式下的强度分析
Strength analysis of rock material under the brittle shear failure mode
摘要
Abstract
To obtain brittle shear character parameters, acoustic emission accompanied with triaxial stress-strain test was applied to monitor the initiation and expanding of micro cracks in rock material. Theoretical analysis and data processing were carried out based on the theories of fracture mechanics and general rock mechanics, relations between the feature strength of three stages and the stress state were obtained, and a method was proposed for analyzing the brittle shear failure of rock material. The relationships of the Mohr-Coulomb strength theory, Griffith strength theory and Hoek-Brown criterion with the brittle-shear coupled strength model were discussed. Strength analysis of mixed granite in Shuichang slope was carried out by the brittle shear failure model, and the result of comparison shows strong correlation between test data and theory values.关键词
岩石力学/脆性断裂/剪切/本构关系/材料强度/压缩试验/声发射Key words
rock mechanics/brittle fracture/shearing/constitutive models/strength of materials/compression testing/acoustic emissions分类
建筑与水利引用本文复制引用
李远,乔兰,隋智力,李庆文..岩石材料脆性剪切破坏模式下的强度分析[J].北京科技大学学报,2012,34(12):1364-1370,7.基金项目
国家重点基础研究发展计划资助项目 （）
