The mechanical behavior of the lateral pressure coefficient (LPC) of the axial stress of the anchor rod is an important factor in roadway bolt support, especially in deep mining, where the variation of the LPC is larger. In this paper, an innovative mechanical model of bolt pulling is proposed in which the influence of the LPC is considered. When the LPC is changed, the variation of the axial force along the anchor rod body is expressed by the interface normal stress of the anchoring system. In addition, a full-scale test model with a 1:1 similarity ratio was developed in the laboratory and the influence of the LPC on the deformation and stress of the anchor rod under vertical and horizontal pressure was studied by using a 2.5-m fiber Bragg grating (FBG) force-measuring anchor rod. The results demonstrate that the axial force of the bolt shows the same increasing trend under various LPC values. The theoretical solution of the bolt axial force variation value accords with the experimental data. The theoretical calculation method can effectively predict the variation distribution of the bolt axial force under various LPC changes. Increasing the LPC of the surrounding rock can effectively reduce the axial force and the deformation of the bolt under the same pulling force. The support effect of the bolt can be improved by increasing the pressure of the anchor hole and increasing the interface friction coefficient between the anchoring agent and the surrounding rock during the construction of the bolt support.

锚杆轴向应力的侧向压力系数（LPC）的机械性能是巷道锚杆支护的重要因素，特别是在LPC变化较大的深部采矿中。本文提出了一种创新的螺栓拉伸力学模型，其中考虑了LPC的影响。当LPC发生变化时，沿锚杆体的轴向力的变化由锚固系统的界面法向应力表示。另外，在实验室中建立了具有1：1相似比率的全尺寸测试模型，并使用2.5 m光纤研究了LPC对垂直和水平压力下锚杆变形和应力的影响。布拉格光栅（FBG）测力锚杆。结果表明，在各种LPC值下，螺栓的轴向力都显示出相同的增长趋势。螺栓轴向力变化值的理论解与实验数据吻合。该理论计算方法可以有效预测各种LPC变化下螺栓轴向力的变化分布。增加围岩的LPC可以有效地减小轴向力和相同拉力下锚杆的变形。螺栓的支撑效果可以通过在螺栓支撑的构造过程中增加锚固孔的压力并增加锚固剂与围岩之间的界面摩擦系数来提高。螺栓轴向力变化值的理论解与实验数据吻合。该理论计算方法可以有效预测各种LPC变化下螺栓轴向力的变化分布。增加围岩的LPC可以有效地减小轴向力和相同拉力下锚杆的变形。螺栓的支撑效果可以通过在螺栓支撑的构造过程中增加锚固孔的压力并增加锚固剂与围岩之间的界面摩擦系数来提高。螺栓轴向力变化值的理论解与实验数据吻合。该理论计算方法可以有效预测各种LPC变化下螺栓轴向力的变化分布。增加围岩的LPC可以有效地减小轴向力和相同拉力下锚杆的变形。螺栓的支撑效果可以通过在螺栓支撑的构造过程中增加锚固孔的压力并增加锚固剂与围岩之间的界面摩擦系数来提高。增加围岩的LPC可以有效地减小轴向力和相同拉力下锚杆的变形。螺栓的支撑效果可以通过在螺栓支撑的构造过程中增加锚固孔的压力并增加锚固剂与围岩之间的界面摩擦系数来提高。增加围岩的LPC可以有效地减小轴向力和相同拉力下锚杆的变形。螺栓的支撑效果可以通过在螺栓支撑的构造过程中增加锚固孔的压力并增加锚固剂与围岩之间的界面摩擦系数来提高。