Abstract:

 Based on the road construction project in a coal mine,  three major characteristic values  were selected, which included theslope, thecurvature, and the horizontal deformation as evaluation indicators. The main calculation model that imposed the convex settlement curve at the bottom of the embankment was determined according to the finite element calculation and analysis. Finally, was studied the impact of each characteristic valueon the mechanical properties of road structure layers was studied, and the conclusion showed that the curvature was the most significant factor.

Key words: goaf; ground surface settlement; highway; pavement structure; finite element method