... Abstract In the evolution of mining operations that exploit extensive orebodies to depth there inevitably comes a time where the economics of open pit mining reach their break-even ratio. The consideration of underground operations becomes increasingly important to sustain mine production...

...Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 Back analysis and radar interferometry monitoring in a large open pit slope C. González-Nicieza & M.I. Álvarez-Fernández...

..., time-domain-reflectometry (TDR) installations and inclinometers, and to the appropriate solutions to reduce the slope movements to admissible limits being applied: setbacks to reduce the angle of the slope and drainage wells, up to 400m in depth, to lower the piezometric level. Once the open pit...

... Abstract Cobre Las Cruces is an open pit mine that extracts copper sulphides from the same volcanosedimentary Paleozoic deposit as the mines of Rio Tinto, in the SW of Spain. The pit measures 1600m Long×900m wide×250m deep. The ore is overlain by 150 metres of the tertiary marly formation...

... Abstract In the City of Rijeka the Sport Hall Zamet is under construction. An excavation of open pit has to be made and the cut slope has to be vertical with height of 15 m so demanding support system is needed. On the location there is limestone rock-mass which protrudes to the surface...

... The paper aims to present a case of an open pit marble and underground quarry. The rock mass characterization has been based on laboratory mechanical tests on marble, geostructural exploration of joint sets, and in situ testing of rock stress by means of hydro fracturing tests. Numerical models...