Investigation of the Medieval Jeroným Mine Stability: Present Results from a Distributed Measurement Network

Abstract

Jeroným is a sixteenth century mine situated in western Bohemia near Mariánské Lázně. It is being prepared to be the base of a museum of medieval ore mining. As a source of information for investigation of stability of aged mining openings, a distributed measurement network (DMN) combined with seismic station has been built up gradually since 2004. DMN is equipped with sensors for measurement of mine water level changes (3 selected monitoring points), mine temperatures (2 points), rock massif joint aperture changes (4 points), cross-section convergence changes (2 points) and changes of rock massif stress tensor (2 points). Data acquisition unit of DMN is integrated into the seismic recording station that is equipped with data transmission via GSM network. Installation of all above mentioned sensors was finished in May 2009. A brief description of DMN and present results derived from the data obtained are described in the contribution. Monitoring of height changes of high inaccessible ceiling using laser distance meter and changes of stress tensor of rock massif are described in detail. © Springer-Verlag Berlin Heidelberg 2011.