Research on the Influence of Deep Seated Sinkhole on the Settlement of Roadways
【摘要】：Roadway settlement caused by either movement of the underlying surface due to previousexisting mine site, cut and cover tunnel etc. are one of the common and reoccurring problemsalong highways, state roads, country roads, and local roads. Such incidents cause significantproblems that may include lane and/or road closure, interruption to the public normal way of life,construction delays and interruption to construction schedule. This research uses FEM toexamine surface and the subsurface settlement profile caused by the previous mining activity. Inthe analysis, the influence of the size, shape and buried depth of the hole, as well as the height ofthe embankment, are considered. The results of this soil models confirm the empirical solutionoriginally proposed by Peck (1969) that the surface settlement trough conforms to the normalprobability curve. Only the max settlement and inflection points were somewhat different. Themeasured data also confirms previous studies and field measurements by Peck (1969), O’Reillyand New (1982) and Lake et al.(1992) suggestion that i is independent of the volume loss andlinearly proportional to the tunnel depth.