Piezocone in silty tailing materials.

• Autorzy: Schnaid F. , Bedin J. , Costa Filho L.M.
• Języki publikacji: EN

Abstrakty

EN

Countries with large mining industry operations face serious environmental risks resulting from large-scale mining activities. Although there has been a significant improvement in the design and management of tailings storage facilities, there are still major economic and technical constraints that cause important environmental impact in discharge areas. From a technical perspective, investigations of water table configuration, aquifer boundaries, site characterization and determination of short- and long-term properties of tailings materials are important requirements for engineering of tailings. These aspects are evaluated in this paper from the results of piezocone tests, with focus on aspects regarding segregation, shear strength and consolidation properties of gold and alumina mining tailings. Attention is given to identification of essential features that link the rate of cone penetration to drainage effects, which is achieved by expressing the results in a space that correlates a di-mensionless velocity V with the degree of drainage U. In this space, partial drainage is identified and the risk of overestimating properties assessed from field tests is avoided.

Słowa kluczowe

PL

odpady poflotacyjne; badania geotechniczne; sondowanie statystyczne

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2007
• Tom: Vol. 29, nr 1-2
• Strony: 151--162
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Schnaid F.

autor

Bedin J.

autor

Costa Filho L.M.

• Federal University of Rio Grande do Sul, Brazil

Bibliografia

• [1] BEDIN J., Interpretation ofPiezocone Test in Bauxite Residues, M.Sc. Dissertation - Graduate Course in Civil Engineering, 2006, UFRGS, 150.
• [2] DAVIES M.P., MARTIN T.E., Tailings and Mine Waste '00, Proceedings of the Seventh International Conference on Tailings and Mine Waste '00, Fort Collins, 2000, Colorado, USA, Rotter-dam/Brookfield, 3-15.
• [3] FAHEY M., NEWSON T.A., FUJIYASU Y., Engineering with tailings. Proceedings of the Fourth International Congress on Environmental Geotechnics, Rio de Janeiro, 2002, Vol. 2, 947-973.
• [4] HIGHT D.W., GEORGIANNOU V.N., FORD C.J., Characterization of clayey sands, Proceedings of the International Conference on the Behavior of Offshore Structures, BOSS' 94, Cambridge, 1994, Mass., 2, 321-40, Pergamon Press, Oxford.
• [5] HOULSBY G.T., TEH C.I., Analysis of the piezocone in clay, Int. Symp. Penetration Testing, 1988, Rotterdm/Balkema/De Ruiter, Vol. 2, 777-783.
• [6] MARTIN T.E., MCROBERTS EC, Tailings and Mine Waste '99, Proceedings of the Sixth International Conference on Tailings and Mine Waste '99, Fort Collins, 1999. Colorado, USA, Rotter-dam/Brookfield, 287-302.
• [7] MCNEILAN T.W., BuGNO W.T., Cone penetration test results in offshore California soils. Strength Testing of Marine Sediments: Laboratory and in Situ Test Measurements, ASTM STP 833, 1985, 55-71.
• [8] LUNNE T., ROBERTSON P.K., POWELL J.J.M., Cone penetration testing in geotechnical practice, Blackie Academic & Professional, 1997, 312 p.
• [9] RANDOLPH M.F., Characterization of Soft Sediments for Offshore Applications, 2nd Int. Conf. on Site Charact., Milpress, Porto, 2004, Vol. 1, 209-233.
• [10] RANDOLPH M.F., HOPE S., Effect of cone velocity on cone resistance and excess pore pressures, Proc. Int. Symp. on Engineering Practice and Performance of Soft Deposits, Osaka. 2004.
• [11] SCHNAID F., Geo-characterization and properties of natural soils by in situ tests, Proceedings ISC-2 on Geotechnical and Geophysical Site Characterization, 2005, 1, 3-41.
• [12] SCHNAID F., LEHANE B.M., FAHEY M., In Situ Test Characterization of Unusual Geomaterials, Keynote Lecture, Proceedings of the 2nd Int. Conf. on Site Charact., Milpress, Porto, 2004, Vol. 1, 49-74.
• [13] SENNESET K., SANDVEN R., LUNNE T., BY T, AMUNDESEN T., Piezocone testing in silty soil, Penetration Testing 88, Balkema, 1988, 955-966.
• [14] VICK S.G., Planning, design, and analysis of tailings dams, Vancouver, 1990, BiTech., 2nd edition, xi, 369.
• [15] VILLAR L.H.A., Research on Consolidation and Desiccation of Bauxite Mining and Industrial Processing Wastes, Rio de Janeiro, 2002, PhD Thesis, Civil Eng. Dept., Catholic University of Rio de Janeiro, 443 p.