龙门山构造带碎裂结构岩体斜坡灾害的孕育演化机制与动态评价理论

碎裂结构岩体因结构面发育、空间各向异性突出、力学特性受结构控制显著，其形成的斜坡稳定性往往很差，尤其是断裂构造带沿线，且灾害孕育发展过程复杂，成灾模式特别，亟待对其成灾机理和评价理论开展深入研究。本项目拟以龙门山断裂构造带的典型碎裂结构岩体自然斜坡和重大工程边坡为研究对象，综合运用工程地质、地球物理勘探、岩石力学、摄影测量、人工智能等多学科及交叉学科的前沿理论，采用室内试验、现场试验、探测与观测、理论分析、数值模拟等多种手段，从宏细观角度出发，对碎裂结构岩体斜坡灾害的诱发条件、孕育演化机制、动态评价理论开展基础研究，构建适用于碎裂岩体结构的精细描述和表征方法，提出不同碎裂结构斜坡变形破坏的形成演化过程机理、以及力学特性的快速获取技术方法，建立岩体碎裂程度与宏观力学特性关系的多尺度理论模型。在此基础上，建立考虑灾害孕育过程的稳定性动态评价理论和方法。成果可为相关理论研究和技术应用提供支撑。

Because of the development of the structural plane, the obvious spatial anisotropy, the mechanical properties are obviously controlled by the structure, the stability of the slope that caused by rock mass of cataclastic structure are often poor, especially along the fault tectonic zone, and the process of disaster development is complex, besides, the geological disasters occur in a very special way, so the intensive study of the disaster mechanism and the evaluation theory should be carried out urgently. With this end in view, this project is intended to study the typical natural slopes or major engineering slopes that made up of rock mass of cataclastic structure along the Longmenshan fault tectonic belt, comprehensive use the frontier theory of Engineering Geology, Geophysical Exploration, Rock Mechanics, Photogrammetry, Artificial Intelligence and other disciplines and interdisciplinary, by means of laboratory test, field test, detection and monitoring, theoretical analysis, numerical simulation, physical simulation and various of other means, and starting from the macro-mesoscopic perspective to carried out basic research on induced conditions of slope hazards, development and evolution mechanism, dynamic evaluation theory of rock mass of cataclastic structure. Finally, A fine description and characterization method for the rock mass of cataclastic structure will be established, the mechanism of the formation and evolution of the different ruptured rock mass in the slope and the rapid acquisition of the mechanical properties will be proposed, a multiscale theoretical model for the relationship between the degree of rock fragmentation and the macroscopic mechanical properties of cataclastic structures will be established. On this basis, The theory and method of dynamic evaluation of stability in the process of disaster development are established. The results can provide support for relevant theoretical research and technical application.