岩体结构数字识别与损伤力学行为表征方法研究

项目名称： 岩体结构数字识别与损伤力学行为表征方法研究

项目编号： No.10872046

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 机械、仪表工业

项目作者： 杨天鸿

作者单位： 东北大学

项目金额： 38万元

中文摘要： 测量数据不完备的复杂岩体结构系统与理论严密的力学模型之间相互脱节是岩体力学应用的关键问题。本项目借助于先进的3GSM三维岩体不接触测量技术和大规模并行数值建模技术，获取一系列真实描述岩体宏观结构的数字图像，在提取节理几何形态空间分布信息的基础上，根据岩体破坏类型和工程尺度，对级别较高的结构面按节理单元处理；对于级别较低的节理面，基于考虑节理统计分布的损伤力学方法和Hoek-Brown系统表征岩体损伤变量和强度指标，实现岩体结构参数（几何形态和力学性质）数字信息与力学分析的精细定量计算有机衔接，建立基于三维岩体结构面几何形态数字图像识别技术的岩体破坏过程分析模型，为岩体工程结构稳定性分析和破坏机理研究提供更加真实、可靠的手段，将会促进岩石力学工程的应用和发展。

中文关键词： 数字图像处理;节理岩体;岩体破坏过程分析模型;数值模拟

英文摘要： The inconformity between the complex rockmass structre system with inadequate measurement data and the rigorous mechanical model was critical issue of the application of rock mechanics. A 3D contact-free measuring system (3GSM) and large-scale parallel numerical modeling technique were used in this project. A series of digital image which can real describe the macro-structure of rockmass were obtained by 3GSM, and the geometrical information of rockmass structure was acquired by digital image. According to failure type of rockmass and engineering scale, the large scale discontinuities were regarded as joint elements, but the small-scale discontinuities were used to characterize damage variables and strength index based on geometrical damage mechanics and Hoek-Brown strength criterion. The works can realize the optimum connection between the digital information of rockmass structures and the quantitative determination of mechanical parameters. It is help to provide more actual and reliable approach for researching stability analysis and failure mechanism of rockmass engineering. It will promote rock mechanics engineering application and development

英文关键词： digital image processing;joint rockmass; rockmass failure process analysis model; numerical similation