Breakdown mechanisms in iron caves. An example from Brazil

Autor:	Airton Barata, Rafael Guimarães de Paula, Georgete Dutra, Allan D.F. da Silva, Marcelo Roberto Barbosa, R. A. L. Osborne, Chrystophe R.P. da Silva, Iuri Viana Brandi
Rok vydání:	2019
Předmět:	QE1-996.5 geography geography.geographical_feature_category QH301-705.5 Geology assisted elimination of cave Carajás Archaeology Cave iron cave Biology (General) speleological study cave breakdown mechanism Earth-Surface Processes
Zdroj:	International Journal of Speleology, Vol 48, Iss 2, Pp 179-190 (2019)
ISSN:	1827-806X 0392-6672
DOI:	10.5038/1827-806x.48.2.2266
Popis:	An iron cave in the vicinity of a mine in Carajás, Brazil, was selected to be mined within an assisted elimination project, planned to control all mine advancement operations towards the cave along with a strict speleological physical monitoring. It allowed, in a pioneering way, the recording of events in the cave from the first signs of damage until to the total collapse of the cave. The project lasted four years and it was possible to identify and describe four breakdown mechanisms in iron caves: Fragment downfall, Block downfall, Controlling structure reactivation, and Open discontinuity movement. The mechanisms occurred independently or together, and not necessarily in a chronological order. This work details and discusses the mechanisms and their relationships with the geostructural and geomechanical features of the cave to assist stability assessment studies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe14d4891d211fa56c947f442aec4808 https://doi.org/10.5038/1827-806x.48.2.2266 Zobrazit plný text záznamu Plný text ve formátu PDF