Evaluating ground settlement above a mined area

Timothy D. Stark, Erik J. Newman, Shahriyar Baig, Pedro Amaya

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Many states allow construction of landfills over previously mined areas. However, mitigation of the underground mines by filling or removal is often required prior to landfill construction. A settlement analysis for the proposed vertical expansion of a residual waste landfill is presented in this paper. The primary purpose of the analysis was to evaluate the possibility of subsidence of an underground mined area underlying the landfill in response to the proposed 31 m high vertical expansion. The analysis was performed using the software FLAC (Fast Lagrangian Analysis of Continua) which is a two-dimensional explicit finite difference code. The results of the analysis show that the proposed vertical expansion would not cause mine subsidence but it would cause a small amount of elastic ground settlement. As a result, no negative impacts to the existing engineering components of the landfill liner system are anticipated after completion of the proposed vertical expansion. This settlement analysis provides an alternative to removal or filling of underground mines to obtain regulatory approval as demonstrated by this vertical expansion project.

Original languageEnglish (US)
Title of host publicationGeoFlorida 2010
Subtitle of host publicationAdvances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference
Number of pages10
StatePublished - 2010
EventGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference - West Palm Beach, FL, United States
Duration: Feb 20 2010Feb 24 2010

Publication series

NameGeotechnical Special Publication
ISSN (Print)0895-0563


OtherGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference
Country/TerritoryUnited States
CityWest Palm Beach, FL


  • Mining
  • Settlement
  • Soil stabilization

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


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