HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Conference papers

In-situ large monitoring and numerical modeling of the loss of stability of salt cavity

Abstract : During several years, a fulfilled brine salt cavity was monitored in The North-East of France (Lorraine) in order to analyze times evolutions of several variables (microseismicity, subsidence) using geophysical and geomechanical monitoring. In addition, continuous and mixed (discontinuous-continuous) non-linear numerical computations were performed in order to predict the mechanical collapse conditions of the cavity. At given cavity sizes, the collapse appeared mainly controlled by the value of the brine pressure in the cavity and by the strength of a stiff dolomite rock layer located at the top of the cavern. The control of the collapse was performed by decreasing smoothly the brine pressure up to the failure (collapse of the cavern and of the overburden rock layers). Comparison between experimental data and numerical computations allows describing quite accurately the time evolution of failure. The mechanisms of failure are analyzed and some physical interpretation are given concerning this collapse.
Document type :
Conference papers
Complete list of metadata

Contributor : Gestionnaire Civs Connect in order to contact the contributor
Submitted on : Wednesday, April 2, 2014 - 3:58:39 PM
Last modification on : Wednesday, April 2, 2014 - 3:58:39 PM




Farid Laouafa, Isabelle Contrucci, Xavier Daupley. In-situ large monitoring and numerical modeling of the loss of stability of salt cavity. 7. Conference on the Mechanical Behavior of Salt (SaltMech 7), Apr 2012, Paris, France. pp.171-178, ⟨10.1201/b12041-24⟩. ⟨ineris-00970943⟩



Record views