Abstract Based on reliability theory, a reliability analysis method for bedding rock slope is established, considering the effect of blasting load. The calculation expressions of the reliable index and failure probability are obtained. Taking a high-cutting slope as an example, the steady state and failure probability are analyzed, and the change rules of failure probability are discussed under diverse cohesion, internal friction angle, explosive charge and distance to burst center. The calculated results show that cohesion has a great influence on failure probability, and that failure probability decreases linearly with the increase of internal friction angle. When the single-hole dose increases from 10 kg to 160 kg, the failure probability increases to 97.10%. When the distance to burst center is less than 20 m, the failure probability decreases rapidly, but the decreases reduce while distance exceeds 20 m. Finally, considering the timeliness of blasting vibration, it is found that blasting load makes the failure probability increase 49.61%, and the impact time of single blasting vibration is about 6 seconds.
