Considering characteristics of Grotto Relics

the influence factors and dynamic finite element analysis methods on deformation stability grotto country rock are discussed. Focusing on two sections of Mogao Grottoes in Dunhuang of Gansu Province

the dynamic response and variation regularity of rock mass and its adjuncts are revealed through numerical simulation of displacement and stress field under dynamic loads with different PGA

spectra and durations. The results indicate weak points for seismic retrofitting. It also shows that the displacement and stress increase

range of stress concentration expands and the damages probability of country rock increases with the increase of peak ground acceleration (PGA)

characteristic period and duration of dynamic loads. The distribution of stress is closely related to the quantity

combination feature

geometry shape and size of caves. This paper provides theoretical basis and practical reference for the preservation of grotto relics and seismic retrofit and seismic hazard mitigation for the rock mass.