Experimental research on damage identification of topping dangerous rock structural surface based on dynamic characteristic parameters

Rock block tilting is one of the most common types dangerous rock failures with no clear indicator displacement prior to failure. Existing stability evaluation methods remain limited in their ability constrain non-penetrating section area, which closely related stability, and evaluations are therefore associated large uncertainties. The dynamic characteristic parameters toppling structural plane strength. Under vibration loading, rainfall, and/or excavation unloading conditions, becomes damaged change. In this study, we present a model identify quantitative qualitative relationship between bonded area plane. accuracy verified by experiments. experimental results show that damping ratio decreases linearly damage, whereas maximum speed particle trajectory increases nonlinearly natural frequency nonlinearly. can be used evaluate degree surface damage rock.