Stability assessment of the stopes and crown pillar of the S’Argentera abandoned mines (Ibiza, Spain) using geomechanical classifications, an empirical approach and numerical analysis focused on a possible tourist exploitation
DOI:
https://doi.org/10.21701/bolgeomin.128.1.001Keywords:
finite elements, geotechnics, geomechanical classifications, mine, rock mechanicsAbstract
The argentiferous lead mines of S’Argentera in Ibiza (Balearic Islands, Spain) are some abandoned underground workings from the first decade of the 20th century. The stability of the main stopes and the crown pillar of the mines has been evaluated, part of which is located below the road between Santa Eulalia and San Carles de Peralta. The possibility of allowing public access to the surface of the mining area and setting up a project of a “show mine” on the underground stopes and galleries is analysed. The stability is assessed with an empirical approach using the O index, the scaled span method, and a stability graph together with a numerical approach. Results show that the stopes of the mines are globally stable but some lack an adequate safety factor. Therefore, some local reinforcements and monitoring are needed. The finite element modelling in two dimensions yields realistic results on the current stope stability and possible rock falls which have already occurred.
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References
Arribas, A. y Moro, C. 1985. Mineralizaciones españolas de Pb-Zn asociadas a fenómenos cársticos en rocas triásicas y jurásicas. Stvdia Geologica Salmanticensia, 21, 125-151.
Barton, N. 2002. Some new Q-value correlations to assist in site characterisation and tunnel design. International Journal of Rock Mechanics and Mining Sciences, 39, 2002, 185-216. https://doi.org/10.1016/S1365-1609(02)00011-4
Barton, N., Lien, R. and Lunde, J. 1974. Engineering classification of rock masses for the design of tunnel support. Rock Mechanics, 6: 4: 189-236. https://doi.org/10.1007/BF01239496
Barton, N. and Bieniwaski, Z.T. 2008. RMR and Q: Setting records. Tunnels and Tunnelling International, February 2008, 26-29.
Barton, N.R. and Choubey, V. 1977. The shear strength of rock joints in theory and practice. Rock Mech. 10 (1-2) 1-54. https://doi.org/10.1007/BF01261801
Barton, N.R. and Bandis, S.C. 1982. Effects of block size on the shear behaviour of jointed rock. 23rd US Symp on rock mechanics, Berkeley, 739-760.
Barton, N.R. and Bandis, S.C. 1990. Review of predictive capabilities of JRC-JCS model in engineering practice. In rock joints, proc. int. symp. on rock joints. Loen. Norway (eds. N. Barton and O. Stephansson). 603-610. Rotterdam: Balkema.
Barton, N. and Bieniawski, Z.T. 2008. RMR and Q - Setting records straight. Tunneling and tunnelling international, Feb 2008, pp. 26-29.
Bieniawski, Z. T. 1973. Engineering Classification of jointed rock masses. Trans S Afr Int Civ Engrs 15, 335-344.
Bieniawski, Z.T. 1989. Engineering Rock Mass Classification. Wiley, Chichester, 251 pp.
Bieniawski, Z.T. 2011. Errores en la aplicación de las clasificaciones geomecánicas y su corrección. Conferencia magistral Adif - Geocontrol, 35 pp.
Carter, T.G. and Miller R.I. 1995. Crown pillar risk assessment - cost effective measures for mine closure remediation planning. Trans. Inst. Min. Metl. 104, 41-57.
Carter, T.G., Cottrell, B.E., Carvalho, J.L. y Steed, C.M. 2008. Logistic regression Improvements to the scale span method for dimensioning surface crown pillars over civil or mining openings. American Rock Mechanics Association, Proceedings, 2008.
Carter, T.G. 2014. Short course - Crown pillar stability assessment. Course notes and guidelines. 1er Congreso Internacional de Diseño de Mina por Métodos Empíricos, Lima, Perú, junio 2014, 34 pp.
Cornejo, L. y Salvador, E. 1996. Manual de túneles interurbanos de carretera. Gobierno Vasco, 211 pp.
Coulson J.H. 1972. Shear Strength of flat surfaces in rock stability of rock slopes. In: Cording E.E.J. (ed) Proceedings of 13th Symposium on Rock Mechanics. American Society of civil engineers, New York, 77-105.
Escandell Serra, J. 2001. Ses Mines de l'Argentera. Projecte per al seu aprofitament turístic, en: J. Carles Cirer Costa (ed.), Estudis sobre el turisme a Eivissa i Formentera 2. Ibiza, 41-48.
Golder Associates. 1990. Report 881-1739 to CanMet on "Crown Pillar Stability Back Analysis". Report #23440-8-9074/01-SQ, Canmet, 90 pp.
Helm, P.R, Davie, C.T. and Glendinning, S. 2013. Numerical modelling of shallow abandoned mine working subsidence affecting transport infrastructure. Engineering Geology, Vol 154, 6-19. https://doi.org/10.1016/j.enggeo.2012.12.003
Hoek, E. 2007. Practical Rock Engineering. Set of course notes. Shear strength of discontinuities. www.rocscience.com/education/hoeks_corner (4-dec-2014).
Hoek, E. and Diederichs, M.S. 2006. Empirical estimation of rock mass modulus. International Journal of Rock Mechanics and Mining Sciences 43, 203-215. https://doi.org/10.1016/j.ijrmms.2005.06.005
Hoek, E., Carranza Torres, C. and Corkum, B. 2002. Hoek-Brown failure criterion-2002 edition. Proceedings of NARMS-Tac, 267-273.
Hoek, E., Kaiser, P.K. and Bawden, W.F. 1995. Support of Underground Excavations in Hard Rock. Editor: Taylor and Francis, Fourth Print 2005, 215 pp.
Jordá Bordehore, L. 2009. La minería de los metales en la provincia de Madrid: patrimonio minero y puesta en valor del espacio subterráneo. Tesis doctoral, Universidad Politécnica de Madrid, inédita. 780 pp + anejos (180 pp. de fichas y 11 planos).
Jordá Bordehore, L., Jordá Bordehore, R. y Fernández Amo, F.J. 2010. Contribución al conocimiento geotécnico de la Mina Monchi de cara a su musealización. Ingeopres nº195, 28-33.
Jordá Bordehore, L. y Jordá Bordehore, R. 2009. Estudio geotécnico preliminar de la mina de plata abandonada de Bustarviejo (Sierra de Guadarrama, Madrid). En: J.J. Durán y J. López Martinez (Eds.), Cuevas turísticas, cuevas vivas pp. 285-293. Madrid. Asociación de Cuevas Turísticas Españolas. 414 pp. Actas II Congreso Español de Cuevas Turísticas, Santander, Cantabria 16-18 de octubre de 2008.
Jordá Bordehore, L., Heinrich Hermanns, M. y Jordá Bordehore, R. 2011. Apuntes para el conocimiento de las minas de plomo argentífero de S'Argentera (Ibiza) en los siglos XIX y XX. Re Metallica, 17, 1-12.
Marinos, P. and Hoek, E. 2000. GSI - A geologically friendly tool for rock mass strength estimation. Proc. GeoEng2000 Conference, Melbourne, 1422-1442.
Martin, C.D., Kaiser, P.K. and McCreath, D.R. 1999. Hoek-Brown parameters for predicting the depth of brittle failure around tunnels. Can. Geotech J., 36(1), 136-151. https://doi.org/10.1139/cgj-36-1-136
N.G.I. 2013. Using the Q system. Handbook. Rock mass classification and support design. Ed. NGI, Oslo, Norway. 57 pp.
Nickson, S.D. 1992. Cable support guidelines for underground hard rock mine operations, MSc, thesis, Dept. Mining and Mineral Processing, University of British Columbia.
Priest, S.D. and Hudson, J.A. 1976. Discontinuity spacings in Rock. International Journal of Rock Mechanics and Mining Sciences, 13: 135-148. https://doi.org/10.1016/0148-9062(76)90818-4
Potvin, Y. 1988. Empirical open stope design in Canada. PhD., thesis, Dept. Mining and Mineral Processing, University of British Columbia.
I.T.G.E. 1991. Mecánica de Rocas aplicada a la minería metálica subterránea, Ed. Instituto Tecnológico Geominero, Madrid, 334 pp.
I.T.G.E. 1995. Caracterización de estructuras subterráneas artificiales. Aplicación a un caso concreto (estructuras subterráneas, Asturias II) Aplicación mina Villabona. Informe Geotécnico y de subsidencia. Resultados y análisis de los ensayos de laboratorio. Convenio específico ITGE Principados de Asturias, 38 pp. Informe Interno accesible online: http://info.igme.es/SidPDF%5C039000%5C311%5CInforme%20geologico%5C39311_0007.pdf (25/05/2015)
Rocscience Inc. 2011. Phase2 Version 8.0 - Finite Element Analysis for Excavations and Slopes. www.rocscience.com, Toronto, Ontario, Canada.
Rocscience Inc. 2005. RocData Version 4.0 - Rock, Soil and Discontinuity Strength Analysis. www.rocscience.com, Toronto, Ontario, Canada.
Rocscience Inc. 2001. Dips version 5.0 Graphical and statistical analysis of orientation data. www.rocscience.com, Toronto, Ontario, Canada.
Yong-Bok Jung, Won-Kyong Song, Dae-Sung Cheon, Dong-Kil Lee and Joo-Young Park. 2014. Simple method for the identification of subsidence susceptibility above underground coal mine in Korea. Engineering Geology. Vol 178, pp. 121-131. https://doi.org/10.1016/j.enggeo.2014.06.006
Waltham T., Parh H.D., Suh, J., Yu, M.H., Kwon, H.H. and Bang, K.M. 2011. Collapses of old mines in Korea. Engineering Geology. Vol 118, issue 1-2., pp. 29-36. https://doi.org/10.1016/j.enggeo.2010.11.007
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