ENG  Vol.6 No.7 , June 2014
Modeling of Wind Erosion of the Aitik Tailings Dam Using SWEEP Model
Abstract

Waste impoundments are usually not protected by any growing crops, soil roughness, or wind barriers, and dust due to wind erosion of the surface waste material can be a major environmental problem. The tailings dam in Aitik is highly susceptible to wind erosion when it is dry and windy. Strong dust storms may occur during dry seasons. These events are short-lived but may transport a huge amount of particulate matter and adversely impact air quality in downwind areas. This study estimated material loss from the Aitik tailings dam using SWEEP model. The simulated total material loss, saltation and creep loss, suspension loss and PM10 loss were 4.4941 kg/m2, 0.042 kg/m2, 4.4559 kg/m2, 0.264057 kg/m2 respectively. To control the dust generation, wind breaks could be suggested to be installed at 800 m downwind the west side edge of the tailings dam to reduce the saltation and creep and it would in turn reduce suspended emission. The measured total suspended material for five days by exposure profiling method was 0.475 kg/m2, which had a big difference with a simulate value of 4.4559 kg/m2. Many reasons contributed to the disagreement of simulated value and measured value in this study. In order to use the model for mining industry, more tests are needed to validate the modeling result, and calibration methods could be useful in adjusting the internal coefficients and empirical equations.


Cite this paper
Jia, Q. , Al-Ansari, N. and Knutsson, S. (2014) Modeling of Wind Erosion of the Aitik Tailings Dam Using SWEEP Model. Engineering, 6, 355-364. doi: 10.4236/eng.2014.67038.
References

[1]   Blight, G.E. (1989) Erosion Losses from the Surfaces of Gold-Tailings Dams. Journal of the South African Institute of Mining and Metallurgy, 89, 23-29.

[2]   Blight, G.E. (1991) Erosion and Anti-Erosion Measures for Abandoned Gold-Tailings Dams. Oaks, R.W. and Bowder, J., Eds., Proceedings of Reclamation 2000: Technologies for Success, Eight National Meeting of American Society Surface Mining and Reclamation, Durango, American Society for Surface Mining and Reclamation, Princeton, 323-330.

[3]   Blight, G.E. and Amponsah-da, C.F. (2004) Towards the 1000 Year Erosion Free Tailings Dam Slope—A Study in South Africa. In: Barker, D.H., Watson, A.J., Sombatpanit, S., Northcut, B. and Maglinao, A.R., Eds., Ground and Water Bioengineering for Erosion Control and Slope Stabilization, Science Publishers, 365-377.

[4]   Blight, G.E. (2008) Wind Erosion of Waste Impoundments in Arid Climates and Mitigation of Dust Pollution. Waste Management & Research, 26, 523-533.
http://dx.doi.org/10.1177/0734242X07082027

[5]   USDA (Agriculture Research Service) (1961) A Universal Equation for Measuring Wind Erosion. USDA-ARS, 22-69.

[6]   Evans, W.R. and Kalkanis, G. (1977) Use of the Universal Soil Loss Equation in California. Proceedings of National Soil Erosion Conferences, Soil Conservation Society of America, Washington DC, 33-40.

[7]   Woodruff, N.P. and Siddoway, F.H. (1965) A Wind Erosion Equation. Soil Science Society of America, Proceedings, 29, 602-608.

[8]   Fryrear, D.W., Saleh, A., Bilbro, J.D., Schomberg, H.M., Stout, J.E. and Zobeck, T.M. (1998) Revised Wind Erosion Equation (RWEQ). Wind Erosion and Water Conservation Research Unit. USDA-ARS, Southern Plains Area Cropping Systems Research Laboratory.

[9]   Fryrear, D.W., Sutherland, P.L., Davis, G., Hardee, G. and Dollar, M. (2001) Wind Erosion Estimates with RWEQ and WEQ. Stott, D.E., Mohtar, R.H. and Steinhardt, G.C., Eds., 10th International Soil Conservation Organization Meeting, Washington DC, 24-29 May 1999, 760-765.

[10]   Hagen, L.J. (1991) A Wind Erosion Prediction System to Meet User Needs. Journal of Soil and Water Conservation, 46, 106-111.

[11]   Hagen, L.J. (2004) Evaluation of the Wind Erosion Prediction System (WEPS) Erosion Submodel on Cropland Fields. Environmental Modelling & Software, 19, 171-176. http://dx.doi.org/10.1016/S1364-8152(03)00119-1

[12]   Zobeck, T.M., Van Pelt, S., Stout, J.E. and Popham, T.W. (2001) Validation of the Revised Wind Erosion Equation (RWEQ) for Single Events and Discrete Periods. Proceedings of International Symposium on Soil Erosion Research for the 21st Century, Honolulu, 3-5 January 2001, 471-474.

[13]   Feng, G. and Sharratt, B. (2009) Evaluation of the SWEEP Model during High Winds on the Columbia Plateau. Earth Surface Processes and Landforms, 34, 1461-1468.
http://dx.doi.org/10.1002/esp.1818

[14]   Chung, S.H., Herron-Thorpe, F.L., Lamb, B.K., Van Reken, T.M., Vaughan, J.K., Gao, J., Wagner, L.E. and Fox, F. (2013) Application of the Wind Erosion Preduction System in the Airpact Regional Air Quality Modeling Framework. American Society of Agriculture and Biological Engineers, 56, 625-641.

[15]   Fryrear, D.W. (1986) A Field Dust Sampler. Journal of Soil and Water Conservation, 41, 117-120.

[16]   Goossens, D. and Buck, B.J. (2012) Can BSNE (Big Spring Number Eight) Samplers Be Used to Measure PM10, Respirable Dust, PM2.3 and PM1.0? Aeolian Research, 5, 43-49.
http://dx.doi.org/10.1016/j.aeolia.2012.03.002

[17]   Shao, Y., McTainsh, G.H., Leys, J.F. and Raupach, M.R. (1993) Efficiencies of Sediment Samplers for Wind Erosion Measurement. Australian Journal of Soil Research, 31, 519-532.
http://dx.doi.org/10.1071/SR9930519

[18]   Stout, J.E. and Fryrear, D.W. (1989) Performance of a Windblown Particle Sampler. Transactions of the ASAE, 32, 2041-2045. http://dx.doi.org/10.13031/2013.31260

[19]   Goossens, D. and Offer, Z.Y. (2000) Wind Tunnel and Field Calibration of Six Aeolian Dust Samplers. Atmospheric Environment, 34, 1043-1057. http://dx.doi.org/10.1016/S1352-2310(99)00376-3

[20]   Goossens, D., Offer, Z.Y. and London, G. (2000) Wind Tunnel and Field Calibration of Five Aeolian Sand Traps. Geomorphology, 35, 233-252. http://dx.doi.org/10.1016/S0169-555X(00)00041-6

[21]   Sharrat, B., Feng, G. and Wendling, L. (2007) Loss of Soil and PM10 from Agricultural Fields Associated with High Winds on the Columbia Plateau. Earth Surface Processes and Landforms, 32, 621-630. http://dx.doi.org/10.1002/esp.1425

[22]   Sharrat, B. (2011) Size Distribution of Windblown Sediment Emitted from Agriculture Fields in the Columbia Plateau. Soil Science Society of America Journal, 75, 1054-1060.
http://dx.doi.org/10.2136/sssaj2010.0337

[23]   Aitik Meteorological Report (2010).

[24]   Bagnold, R.W. (1943) The Physics of Blown Sand and Desert Dunes. Methuen, London.

[25]   Chepil, W.S. (1945) Dynamics of Wind Erosion: 1. Nature of Movement of Soil by Wind. Soil Science, 60, 305-302. http://dx.doi.org/10.1097/00010694-194510000-00004

 
 
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