Technical Papers

A Calibrated Predictive Geochemical Model of Leaching and Attenuation Reactions in a Mine Pit Lake

Abstract:

A geochemical model was developed to predict future water quality of the Cove pit lake in support of site closure and regulatory permitting. The terminal, groundwater-fed Cove pit lake began filling in 2001, and water-quality samples from the 15-year filling period were used to calibrate the pit-lake model and evaluate the accuracy of the predictions. Inputs to the pit-lake model included geochemical characterization results and a calibrated groundwater flow model. Modeling included the processes of mineral dissolution and precipitation, gas exchange, and adsorption. The results of the geochemical model assess long-term chemogenetic effects on water quality and, overall, closely match observed chemistry for a variety of constituents. This work highlights the applicability of various geochemical datasets to predictive modeling, evaluates discrepancies between observed and predicted water quality, and presents geochemical modeling techniques used to achieve predictions that are both representatives of observed water quality and useful for evaluating future pit-lake chemistry.

Citation:

Hanna, B.T, Newman, C.P., Sterrett, R.J. “A Calibrated Predictive Geochemical Model of Leaching and Attenuation Reactions in a Mine Pit Lake,” in Tailings and Mine Waste ’16, CRC Press, 2016

Authors:

Braden Hanna

Robert Sterrett

Link to Full Text:

Pit-Lake Geochemical Model.pdf

Latest News
  • Itasca Symposium 2020 - Registration Now Open! Registration is now open for the Fifth International Itasca Symposium....
    Read More
  • Itasca Awarded Prestigious Caving 2040 Research Grant Itasca’s research aims to answer the key industry question “how should block caves be designed...
    Read More

Upcoming Events
13 Sep
New Frontiers in EGS Technology Workshop
... Read More
13 Sep
ISRM 2019
International Congress on Rock Mechanics and Rock Engineering... Read More
1 Oct
FLAC3D 7.0 Introductory training course
... Read More