The influence of buried depth

sectional shape of cavern and in-situ stress condition on the stress characteristics of rock cavern under earthquake are analyzed in the present paper by FLAC

3D

.It is reported that the stress of various caverns clearly decreases with the increasing overburdens.It is also reported that the minimum stress of caverns is tensile when the horizontal stress is dominant;while vertical stress is dominate

the minimum stress of caverns is compressive;as well

the cavern stress clearly decreases with the increasing side pressure coefficient.It is further suggested that the stress of circular shape cavern is less than that of hoof shape and triangular cavern under the same loading condition.In addition

the influencing of cavern sectional shape on the stress condition decreases with the increasing buried depth and in-situ stress

when the buried depth

is larger than 300 m

the influencing of cavern sectional shape is very slight.