Validation of Block Theory and Discontinuous Deformation Analysis with Data from Field Case Histories and Model Experiments

使用现场案例和模型实验的数据验证块体理论和不连续变形分析

• 批准号: 8821766
• 负责人: Richard Goodman
• 金额: $ 16.8万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-05-01 至 1992-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8821766&HistoricalAwards=false
• 关键词: Validation; Block; Theory; Discontinuous; Deformation

This project will obtain data from actual case histories of underground construction in jointed rock masses to validate and guide novel, potentially useful analytical methods developed at Berkeley in the last six years. These methods, lumped under the title "discontinumm mechanics" include a geometric analysis (block theory) and a numerical analysis (discontinuous deformation analysis). The case histories selected are in different types of rocks that contain so many joints that continuum mechanics may not be applicable and where, in contrast, application of discontinuum mechanics is appropriate. The cases include an underground powerhouse to be constructed in Mexico, a vehicular tunnel to be enlarged from a pilot tunnel in Kentucky, and a shaft to be excavated in Nevada. Careful geotechnical mapping is in progress or has been completed in each case so the data will be available with which to perform verification studies. Forward modelling predictions will be matched against actual behavior. Actual block movements will be back calculated. The potential of block theory and discontinuous deformation analysis as tools for designers of underground works will then be enhanced as these approaches are tested and adjusted for the "real work".

该项目将从节理岩体地下施工的实际历史案例中获取数据，以验证和指导伯克利在过去六年中开发的新颖的、潜在有用的分析方法。这些方法统称为“不连续力学”，包括几何分析（块体理论）和数值分析（不连续变形分析）。所选择的案例历史是在不同类型的岩石中，这些岩石含有太多的节理，连续介质力学可能不适用，相反，非连续介质力学的应用是合适的。这些项目包括将在墨西哥建造的地下发电厂，将在肯塔基州的一个试点隧道基础上扩建的一条车辆隧道，以及将在内华达州挖掘的一个竖井。目前正在进行或已完成每一项详细的岩土工程测绘工作，以便获得进行核查研究的数据。正演模型预测将与实际行为相匹配。实际的块移动将被重新计算。块体理论和不连续变形分析作为地下工程设计人员的工具，随着这些方法在“实际工作”中得到测试和调整，其潜力将得到增强。