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Diavik waste rock project : unsaturated water flow

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Title: Diavik waste rock project : unsaturated water flow
Author: Fretz, Nathan; Momeyer, Steven; Neuner, Matthew; Smith, Leslie; Blowes, David; Sego, Dave; Amos, Richard
Issue Date: 2011-11
Publicly Available in cIRcle 2011-10-19
Series/Report no. Tailings and Mine Waste 2011: Vancouver, Canada
Abstract: A field study is on-going at the Diavik Diamond Mine, NT, Canada, to examine at several spatial scales the hydrologic, geochemical, microbiologic, gas transport, and heat transport mechanisms that control drainage water quality. Data sets on volumetric moisture content within a 15 m high waste rock pile (test pile), estimated using time domain reflectrometry (TDR), and discharge at the base of the test pile are presented to characterize the seasonal wetting of the test pile, freeze-thaw cycles within the test pile, and the discharge cycle at the base of an uncovered test pile. Differences in the dielectric properties of ice and water enable the propagation of freezethaw fronts to be recorded via TDR. A spatially uniform initial wetting of the matrix material throughout the test pile was recorded. Moisture contents following the initial wetting phase suggest that the matrix fraction has saturation values exceeding 0.8. Outflow from the test pile follows an annual cycle that is controlled by snowmelt infiltration on the batters, and the movement of thaw front into the core of the test pile.[All papers were considered for technical and language appropriateness by the organizing committee.]
Affiliation: Non UBC
URI: http://hdl.handle.net/2429/38058
Peer Review Status: Unreviewed
Scholarly Level: Other

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