随着矿山工程开发的不断扩展，受周期荷载作用的井巷工程节理围岩稳定性问题日益凸显。本项目采用实验室试验、理论分析、数值模拟和现场实践相结合的方法，紧密围绕循环动力扰动作用下节理岩体的力学响应及锚固机理这一关键科学问题展开研究。通过对加锚前后断续节理试样进行循环加载试验，研究不同循环荷载模式、节理组产状及锚杆预紧力作用下节理岩体的疲劳损伤力学响应特征及疲劳劣化规律，提出考虑锚杆加固的循环扰动荷载下节理岩体非线性疲劳累积损伤模型；阐明循环荷载作用时锚固体宏观层面上的受力变形与细观层面上的破裂演化过程间的耦合作用关系，揭示循环扰动荷载作用下断续节理岩体的锚固止裂机理；采用离散元模拟软件研究扰动影响下深部节理发育围岩巷道的破裂演化机理，结合现场实践监测验证所提疲劳损伤模型合理性并进一步完善理论模型。研究成果对于深部节理围岩巷道长期稳定性控制具有重要的理论意义和实际指导价值。

With the development of mining engineering, the stability problem of jointed surrounding rock in roadway engineering under cyclic loading has become increasingly prominent. In this project, laboratory tests, theoretical analysis, numerical simulation and field tests are used to study the mechanical response and anchoring mechanism of jointed rock under cyclic loading. The specimens containing non-persistent joints before and after anchoring were tested under different cyclic loading, the effects of cyclic loading type, joint distribution and bolt pre-tightening force on fatigue damage mechanical behavior of jointed rock are studied, and a nonlinear fatigue cumulative damage model of anchored jointed rock under cyclic loading is proposed. Clarifying the relationship between the mechanical behavior and the fracture evolution process of the anchored specimens under the cyclic loading, and the strengthening effect and crack prevention mechanism of rock bolt on the jointed rock under the cyclic load is revealed. Discrete element simulation software was used to study the fracture evolution mechanism of jointed surrounding rock in deep roadway under the influence of disturbance, and the rationality of the fatigue damage model is verified and the theoretical model is further improved based on the field monitoring. The research results have important theoretical significance and practical guiding value for the long-term stability control of jointed surrounding rock in deep roadway engineering.