According to the instability failure of the deep rock mass, a superposition block model of anomalously low-friction effect was established. The numerical results were compared with the previous experiment, which verifies the feasibility and effectiveness of the simulation. A vertical impact and confining pressure were applied to the superimposed block model, and a horizontal static force was applied to the working block (the third block). This study aimed to determine the influence rules of vertical impact energy, confining pressure, and block lithology on the horizontal displacement of the working block and normal force on the contact surface. The results show that, with the increase of the vertical impact energy, the horizontal residual displacement of the working block increases linearly, and the horizontal displacement amplitude increases by the exponential function. The minimum normal force on the contact surface decreases linearly. As the confining pressure increases, the horizontal residual displacement of the working block decreases logarithmically, and the horizontal displacement amplitude decreases linearly. The minimum normal force on the contact surface increases linearly. The horizontal residual displacement and displacement amplitude of the working block in the coal-rock combination are 1.51 times and 1.63 times of the rock mass, and the minimum normal force of the former is 0.84 times of the latter. Coal-rock combination is more prone to the anomalously low-friction effect than the rock mass.

中文翻译：

---

块岩体异常低摩效应的影响因素分析

根据深部岩体的失稳破坏，建立了异常低摩擦效应的叠加块模型。将数值结果与先前的实验进行了比较，验证了仿真的可行性和有效性。将垂直冲击力和围压施加到叠加块模型上，将水平静力施加到工作块（第三块）上。本研究旨在确定垂直冲击能，围压和块岩性对工作块水平位移和接触面上法向力的影响规律。结果表明，随着垂直冲击能量的增加，工作块的水平残余位移线性增加，水平位移幅度通过指数函数增加。接触表面上的最小法向力线性减小。随着围压的增加，工作块的水平残余位移对数减小，水平位移幅度线性减小。接触面上的最小法向力线性增加。煤岩组合中工作块的水平残余位移和位移幅度分别是岩体的1.51倍和1.63倍，前者的最小法向力是后者的0.84倍。煤岩组合比岩体更容易受到异常低摩擦的影响。工作块的水平残余位移对数减小，水平位移幅度线性减小。接触面上的最小法向力线性增加。煤岩组合中工作块的水平残余位移和位移幅度分别是岩体的1.51倍和1.63倍，前者的最小法向力是后者的0.84倍。煤岩组合比岩体更容易受到异常低摩擦的影响。工作块的水平残余位移对数减小，水平位移幅度线性减小。接触面上的最小法向力线性增加。煤岩组合中工作块的水平残余位移和位移幅度分别是岩体的1.51倍和1.63倍，前者的最小法向力是后者的0.84倍。煤岩组合比岩体更容易受到异常低摩擦的影响。煤岩组合中工作块的水平残余位移和位移幅度分别是岩体的1.51倍和1.63倍，前者的最小法向力是后者的0.84倍。煤岩组合比岩体更容易受到异常低摩擦的影响。煤岩组合中工作块的水平残余位移和位移幅度分别是岩体的1.51倍和1.63倍，前者的最小法向力是后者的0.84倍。煤岩组合比岩体更容易受到异常低摩擦的影响。