Due to the existence of a large number of media interfaces in rock mass, complex phenomena of transmission and reflection occur in process of explosion stress wave propagation. Here, based on the theory of stress wave propagation, considering transmission and propagation laws of blast stress wave on different interfaces of media, the theoretical calculation formula for the relationship between vibration velocity and stress of tunnel lining structure with small clear distance incident by blast stress wave was derived. Then, combined with the dynamic tensile ultimate strength of tunnel surroundi...
