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
  • Stability and Stress-Deformation Analyses of Reinforced Slope Failure at Yeager Airport This paper describes the material properties along with the inverse limit-equilibrium and permanent deformation analyses...
    Read More
  • Computers and Geotechnics: Scott Sloan Best Paper Award for 2019 Itasca is pleased to congratulate Dr. Branko Damjanac and Dr. Peter A, Cundall for their...
    Read More
  • Introducing Our New IMASS Constitutive Model The Itasca Constitutive Model for Advanced Strain Softening (IMASS) has been developed to represent the...
    Read More

Upcoming Events
19 Jan
Evaluation of impacts of lahars on structures using DEM numerical modelling
Lahars represent natural phenomena that can generate severe damage in densely populated urban areas. The evaluation of pressures genera... Read More
21 Jan
Griddle Version 2.0 has been Released | Learn What's New
Griddle 2.0 Has Been Released! Join us for a webinar on "What's New in Griddle 2.0?"... Read More
8 Mar
FLAC3D 2021 Online, Live Introductory Training
Three days of general feature training addressing basic concepts and recommended procedures for geotechnical numerical analysis.... Read More