Basic processes and factors determining the evolution of collapse sinkholes – A sensitivity study

摘要: Abstract Collapse sinkholes are closed depressions appearing at the surface as a consequence of complex interplay between dissolution, erosion and mechanical stability in karst aquifers. Sinkholes difficult to study their locations almost impossible predict because multiple parameters involved mechanisms controlling evolution collapse. With this work we present systematic theoretical research focused on processes responsible for development collapse sinkholes. Splitting time different stages propose conceptual model allowing decoupling main sensitivity parameters. The framework is implemented with help high resolution 2D simplified 3D DEM model. Our results demonstrate that sinkhole controlled by dissolution throughout most its evolution, while collapses occur during short intervals. karstification extremely sensitive variations hydraulic conductivity or amount water flowing through aquifer. Finally, discuss hydro-geological conditions, which allow not studies.