Abstract
A lined tunnel in a semi-infinite alluvial valley with an elastic-slip interface is constructed, and the dynamic stress distribution around the circular tunnel subjected to SH waves is analyzed. The elastic-slip interface model is introduced to simulate the actual interface condition. The Green's function is used to derive the wave fields of incident, scattered, and refracted waves. The elastic and slip coefficients are used to describe the interface properties. The displacement contours and dynamic stresses with different interface coefficients are analyzed. The interface effects under different wave frequencies and embedded depths are also examined in detail.
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