JOURNAL PAPER

Development of a corrosivity classification for cement grouted cable strand in underground hard-rock mining excavations

E. Villaescusa; R. Hassell; A.G. Thompson

CRC Mining, WA School of Mines, Kalgoorlie, Western Australia

SYNOPSIS

A systematic study of groundwater conditions at eight underground mine sites exhibiting a wide range of groundwater qualities throughout Australia has been completed at the WA School of Mines. This has resulted in a new corrosivity classification for groundwater driven corrosion processes for cement grouted cable strand used in the Australian underground mining industry. The new corrosivity classification is simple to use and corrosion rates may be predicted from readily obtained in situ measurements of groundwater dissolved oxygen.

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References

ASTM G1-90 (1999). Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Tests Specimens. ASTM International.         [ Links ]

BIENIAWSKI, Z.T. Engineering Rock Mass Classifications, Wiley, New York. 1989.         [ Links ]

DEAN, S.W. and SPROWLS, D.O. In-Service Monitoring, J.R. Davis (ed.), Metals Handbook Ninth Edition: Corrosion, vol. 13, ASM International, USA. 1987.         [ Links ]

HASSELL, R., VILLAESCUSA, E., THOMPSON, A.G., and KINSELLA, B. Corrosion assessment of ground support systems. Procc. Ground Support in Mining and Underground Construction, Villaescusa, E. and Potvin, Y. (eds.), Balkema, 2004. pp. 529-539.         [ Links ]

HASSELL, R. Corrosion of rock reinforcement in underground excavations, PhD Thesis, Curtin University of Technology, 2007. 274 pp.         [ Links ]

HASSELL, R., VILLAESCUSA E., and THOMPSON, A.G. Testing and evaluation of corrosion on cablebolt anchors. Procc. 41st US Rock Mechanics Symposium, 50 Years of Rock Mechanics-Landmarks and Future Challenges, Golden Colorado. 2006.         [ Links ]

KESTER, D.R. Dissolved Gases Other Than CO2, JP Riley & G Skirrow (eds.), Chemical Oceanography, 2nd edn, vol. 1, Academic Press. 1975.         [ Links ]

VILLAESCUSA, E., SANDY, M.P., and BYWATER, S. Ground support investigations and practices at Mount Isa, Procc. Rock Support in Mining and Underground Construction, Kaiser and McCreath (eds), Balkema, 1992. pp. 185-193.         [ Links ]

WINDSOR, C.R. A review of long, high capacity reinforcing systems used in rock engineering. Proc. Int. 5th Ground Support in Mining & Underground Construction, Villaescusa, E. and Potvin, Y. (eds.), Balkema, Perth, 2004. pp. 17-41.         [ Links ]