水力耦合岩体宏细观变形破坏过程的研究现状

Research Status of Macro and Mesoscopic Deformation and Failure Mechanism of Hydraulically Coupled Complete Rock Mass

地下洞室、地下采矿、引水隧洞工程中,岩体会直接与地下水作用,由此导致的突水事故屡见不鲜,严重威胁工程安全。孔隙水压力作用下岩体的物理力学特性、破坏行为特征和裂纹发展规律等变形破坏行为都与无水条件下存在明显差异。为深入了解水力耦合作用下岩体宏细观变形破坏机制,通过收集整理国内外文献,系统综述了水力耦合岩体变形破坏方面研究的进展与成果。简述了水力耦合下岩体力学特性,重点分析了水力耦合岩体变形破坏机制的最新研究进展,介绍了声发射AE、计算机断层摄影CT和微观扫描电镜等现代辅助试验技术在细观变形破坏分析中的应用。这对评价岩体工程的安全性和稳定性具有借鉴意义。

In underground caverns, underground mining, and water diversion tunnel projects, the rock mass will be directly affected by groundwater. The resulting water inrush accidents are not uncommon and seriously threaten the safety of the project. The deformation and failure behaviors of the rock mass under the action of pore water pressure, such as the characteristics of failure behavior and the law of crack development, are obviously different from those under the condition of no water. In order to gain insight into the macro- and meso-mechanism of complete rock mass deformation and failure under hydraulic coupling, through collecting and sorting out domestic and foreign documents, the research progress and results of hydraulic coupling complete rock deformation and failure are systematically reviewed. The mechanical characteristics of the complete rock mass under hydraulic coupling are briefly described, and the latest research progress on the deformation and failure mechanism of the hydraulic coupling fractured rock mass is analyzed. The application of modern auxiliary test techniques such as acoustic emission AE, computed tomography CT and microscopic scanning electron microscopy in the analysis of mesoscopic deformation failure is introduced. It is of reference significance for evaluating the safety and stability of rock mass engineering.