eprintid: 1947 rev_number: 12 eprint_status: archive userid: 9 dir: disk0/00/00/19/47 datestamp: 2017-06-27 10:11:59 lastmod: 2017-06-27 10:24:13 status_changed: 2017-06-27 10:11:59 type: article metadata_visibility: show creators_name: Contrucci, Isabelle creators_name: Klein, Emmanuelle creators_name: Cao, Ngoc-Tuyen creators_name: Daupley, Xavier creators_name: Bigarre, Pascal corp_creators: INERIS - Institut National de l'Environnement Industriel et des Risques corp_creators: INERIS - Institut National de l'Environnement Industriel et des Risques corp_creators: INERIS - Institut National de l'Environnement Industriel et des Risques corp_creators: INERIS - Institut National de l'Environnement Industriel et des Risques corp_creators: INERIS - Institut National de l'Environnement Industriel et des Risques title: Multi-parameter monitoring of a solution mining cavern collapse: First insight of precursors subjects: MP4 subjects: RF4 subjects: SMU divisions: IP15 full_text_status: none abstract: In order to improve our understanding of the large-scale ground failure phenomena caused by old underground mining works, a solution mine was instrumented in 2004 prior to its collapse as part of the mining scheme. A permanent monitoring system was set up, including a high-resolution microseismic network linked to a surface field-displacement measurement system. The large amount of data transmitted for on-line processing provided daily insight into the evolution of the geological system. First, microseismic activity showed upward progressive failure migration throughout 2008 without any significant surface movement. Second, after two days of intensive brine extraction, a high microseismicity and energy release rate marked the failure of a thin and very rigid bed at a depth of 120 m. This failure occurred 24 hours before the final collapse; it was followed by transient brine pressure signals, and by acceleration of the surface subsidence rate, reaching 1 milt in the final phase. date: 2011 date_type: published publication: Comptes Rendus Geoscience volume: 343 number: 1 publisher: Elsevier pagerange: 1-10 id_number: doi:10.1016/j.crte.2010.10.007 issn: 1631-0713 official_url: http://doi.org/10.1016/j.crte.2010.10.007 access_IS-EPOS: limited owner: Publisher citation: Contrucci, Isabelle and Klein, Emmanuelle and Cao, Ngoc-Tuyen and Daupley, Xavier and Bigarre, Pascal (2011) Multi-parameter monitoring of a solution mining cavern collapse: First insight of precursors. Comptes Rendus Geoscience, 343 (1). pp. 1-10. DOI: https://doi.org/10.1016/j.crte.2010.10.007