滑移式危岩体稳定性的关键在于岩桥段岩石能否有效发挥其抗剪强度，然而岩桥段岩石常受临近爆破扰动的影响，导致其抗剪切性能劣化进而降低危岩体的稳定性。首先，考虑岩桥段岩石黏聚力的劣化和衰减后爆炸应力波的影响，基于极限平衡理论构建爆破扰动作用下危岩体稳定性评价模型；其次，将岩体损伤视为无损岩石面积的削弱，对Maxwell体进行改进建立爆破扰动作用下岩桥段岩石黏聚力劣化模型，并结合试验验证了模型的合理性；最后，将稳定性评价模型应用于危岩体工程算例，同时利用工程算例对相关参数进行了敏感性分析。研究结果表明：岩石弹性模量、初始孔隙率越大，危岩体岩桥段岩石的黏聚力损伤速率越快；爆破作用产生的垂直荷载和切向荷载对危岩体稳定性影响显著，爆破应力波传播方向与结构面夹角大于90°时，结构面上切向应力对危岩体稳定性起正向作用；危岩体稳定性的劣化速率随爆破距离的减小而增大，且爆破产生的冲击荷载相较于黏聚力劣化对危岩体稳定性的影响更显著。该评价模型能为频繁爆破开挖临近危岩体的科学防灾减灾工作提供理论依据。

The stability of slip-type dangerous rock masses critically depends on the effective utilization of shear strength by the rock bridge section; however, the rock bridge is frequently subjected to adjacent blasting disturbances, which can lead to the deterioration of its shear properties and, consequently, reduce the stability of the dangerous rock mass. Firstly, considering the influence of blasting stress waves on the cohesion of the rock bridge section after its bond strength has deteriorated and decayed, a stability evaluation model for dangerous rock masses under blasting disturbance is established based on the limit equilibrium theory; Secondly, the rock mass damage is regarded as the weakening of the area of intact rock, and the Maxwell model is improved to establish a cohesion deterioration model for the rock bridge section under blasting disturbance, which is subsequently verified for its reasonableness through experimental validation; Finally, the stability evaluation model is applied to engineering examples of dangerous rock masses, and sensitivity analyses of relevant parameters are conducted using these cases. The research findings indicate that the larger the elastic modulus and initial porosity of the rock, the faster the rate of cohesion damage to the rock bridge section of the dangerous rock mass. The vertical and tangential loads generated by blasting significantly affect the stability of dangerous rock masses, and when the angle between the direction of blasting stress wave propagation and the structural plane exceeds 90°, the tangential stress on the structural plane has a positive effect on the stability of the dangerous rock mass. The rate of deterioration of stability for dangerous rock masses increases with decreasing blasting distance, and the impact load generated by blasting has a more significant impact on the stability of dangerous rock masses than does the cohesion deterioration. This evaluation model provides a theoretical basis for the scientific disaster prevention and reduction work in the vicinity of dangerous rock masses that are frequently subjected to blasting excavation.