Marine Tailings Disposal Simulation
Publication: Journal of Hydraulic Engineering
Volume 124, Issue 4
Abstract
The disposal of mine tailings in deep water body requires comprehensive assessment of the potential environmental impacts, and estimates of the effective storage capacity of the bottom bathymetry for accommodating the anticipated volume of disposed tailings over the life of a mine. A mathematical simulation model was developed for this purpose to predict the distribution and long-term deposition patterns of tailings in a fjord. The model describes the mechanics of the tailings slurry flow along the bottom of the receiving water body and the settling of suspended particles, as well as the redistribution of the deposited sediments due to slumping of unstable slopes. Specific processes simulated in the model also include entrainment at the top of the density current, entrainment associated with internal hydraulic jumps in areas of changing bottom slopes, hindered settling and coagulation of suspended particles, and sediment deposition and bathymetric changes resulting from the deposition of large quantities of tailings. Long-term tailings deposition patterns are predicted by analyzing the flow of the tailings slurry in a series of time increments, from a few months to a year. The bathymetry is assumed to remain unchanged within each time increment, and the model first simulates the steady-state flow field for the tailings slurry along the bottom and the resulting deposition rates for several sizes of suspended particles. Then the estimated tailings deposition rates are combined with slope stability considerations to predict the new bathymetry of the receiving water body. Data from several operating marine tailings disposal systems were reviewed to assess the applicability of specific relationships used in the model. The model was calibrated using data from one of the most extensively studied marine tailings disposal systems, the Island Copper mine in Rupert Inlet of Vancouver Island, British Columbia. Comparison of simulated tailings deposition patterns in Rupert Inlet with data from field observations and measurements suggests that calibration of the model is satisfactory and provides confidence in the capability of the model to predict deposition patterns and suspended sediment concentrations for proposed mines.
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References
1.
Bechtel. (1983). “Environmental impact statement for the Quartz Hill mine in southeast Alaska.”Rep. Prepared for U.S. Borax and submitted to U.S. EPA.
2.
Burling, R. W., McInerney, J. E., and Oldham, W. K. (1981). “A technical assessment of the Amax/Kitsault Molybdenum mine tailings discharge to Alice Arm, British Columbia.”Rep. Prepared for the Ministry of Fisheries and Oceans, Government of Canada.
3.
Davis. J. P. T. (1978). “Determination of slope failure mechanism in a leveed sea floor valley, Rupert Inlet, B.C.,” Bachelor of Applied Science thesis, Geological Engrg. Programme, Univ. of British Columbia, Vancouver, Canada.
4.
Drinkwater, K., and Osborn, T. R.(1975). “The role of tidal mixing in Rupert and Holberg Inlets, Vancouver Island.”Limnology and Oceanography, 20(4), 518–529.
5.
Durand, R., and Condolios, E. (1956). “Donnees techniques sur le refounement de materiaux solides en conduits.”Rev. l'Industrie Minerals, June.
6.
Ellison, T. H., and Turner, J. S.(1969). “Turbulent entrainment in stratified flows.”J. Fluid Mech., 37(4), 643–655.
7.
Field, M. E., Gardner, J. V., Jennings, A. E., and Edwards, B. D.(1982). “Earthquake-induced sediment failures on a 0.25° slope, Klamath River delta, California.”Geology, 10, 542–546.
8.
Findikakis, A. N., Ryan, P. J., and Kerl, J. F. (1986). “A study of marine disposal of mine tailings.”Design and installation of concentration and dewatering circuits, A. L. Mular and A. A. Anderson, eds., Society of Mining Engineers, Littleton, Colo.
9.
Goyette, D. E. (1975). Marine tailings disposal: Case studies. Mining Effluent Regulations/Guidelines and Effluent Treatment Seminar, Banff, Alberta, Canada.
10.
Graf, W. H. (1971). Hydraulics of sediment transport. McGraw-Hill Inc., New York, N.Y.
11.
Harleman, D. R. F. (1961). “Stratified flow.”Handbook of fluid dynamics, V. L. Streeter, ed., McGraw-Hill Inc., New York, N.Y.
12.
Hay, A. (1981). “Submarine channel formation and acoustic remote sensing of suspended sediments and turbidity currents in Rupert Inlet, British Columbia,” PhD dissertation, Dept. of Oceanography, Univ. of British Columbia, Vancouver, Canada.
13.
Hay, A. E. (1982). “The effects of submarine channels on mine tailings disposal in Rupert Inlet, B. C.”Marine tailings disposal, D. V. Ellis, ed., Butterworth Group, Ann Arbor, Mich.
14.
Henderson, F. M. (1966). Open channel flow. McMillan Company, New York, N.Y.
15.
Johnson, R. D. (1974). “Dispersal of recent sediments and mine tailings in a shallow-silled fjord, Rupert Inlet, British Columbia,” Doctor of Philosophy thesis, Dept. of Geological Sciences, Univ. of British Columbia, Vancouver, Canada.
16.
Krone, R. (1962). Flume studies of the transport of sediment in estuarial shoaling processes: Final report. Hydraulic Engrg. Lab., Univ. of California at Berkeley, Berkeley, Calif.
17.
Littlepage, J. L. (1978). “Oceanographic and marine biological surveys, Alice Arm and Hastings Arm, B. C., 1974–1977.”Rep. to Climax Molybdenum Corp. of B.C. Ltd.
18.
Macagno, E. O., and Macagno, M. C. (1975). “Mixing in interfacial hydraulic jumps.”Proc., 16th Congress of IAHR, Paulo, Brazil.
19.
Massey, B. S.(1961). “Hydraulic jump in trapezoidal channels: An improved method.”Water Power, 13, 232.
20.
Maude, A. D., and Whitmore, R. L. (1958). “A generalized theory of sedimentation.”Brit. J. Appl. Phys., 9.
21.
Normark, W. R., and Dickson, F. H.(1976). “Man-made turbidity currents in Lake Superior.”Sedimentology, 23, 805–831.
22.
Pedersen, S. D., and Nyholm, N. (1979). “Surveying and mathematical modeling of heavy metal pollution in a Arctic Fjord System.”Proc., Int. Conf. on Mgmt. and Control of Heavy Metals in the Environment, London, U.K., 333–240.
23.
Pelletier, C. A. (1977). “Marine tailings disposal at Island Copper Mine, Rupert Inlet, B.C.” Presented at Can. Inst. of Mining 79th Annu. General Meeting, Ottawa, Canada.
24.
Pelletier, C. A. (1982). “Environmental data handling and long term trend monitoring at island copper mine.”Marine tailings disposal, D. V. Ellis, ed., Butterworth Group, Ann Arbor, Mich.
25.
Peterka, A. J. (1958). “Hydraulic design of stilling basins and energy dissipators.”Eng. Monograph No. 25, U.S. Bureau of Reclamation, Washington, D.C.
26.
Prior, D. B., Borhold, D., Coleman, J. M., and Bryant, W. R.(1982). “Morphology of a submarine slide, Kitimat Arm, British Columbia.”Geology, 10, 588–592.
27.
Rouse, H., Siao, T. T., and Nagarathan, S. (1958). “Turbulence characteristics of the hydraulic jump.”J. Hydr. Engrg., ASCE, 84(1).
28.
Schwarz, H. V. (1982). Subaqueous slope failures: Experiments and modern occurrences. E. Schweizenbart'sche Verlagsbuchhandlung, Stuttgart, Germany.
29.
Simons, D. B., and Albertson, M. L. (1960). “Uniform water conveyance channels in alluvial material.”J. Hydr. Engrg., ASCE, 86(5).
30.
Tesaker, E. (1975). “Modeling of suspension currents.”Proc., ASCE Symp. on Modeling Techniques, Reston, Va., 1385–1401.
31.
Thompson, J. A., and Patton, D. W. (1975). “Chemical delineation of submerged mine tailings plume in Rupert and Holberg Inlets, B.C.”Tech. Rep. 506, Canada Fisheries and Marine Service.
32.
U.S. Bureau of Reclamation. (1973). Design of small dams, 2nd Ed., Washington, D.C.
33.
Waldichuk, M., and Buchanan, R. J. (1980). “Significance of environmental changes due to mine waste disposal into Rupert Inlet.”Fisheries and Oceans Canada, British Columbia Ministry of the Environment.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Apr 1, 1998
Published in print: Apr 1998
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