goldsim player model for on-line mine water management · goldsim player model for on-line mine...
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GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 1
GoldSim Player Model for On-Line
Mine Water Management
Alan KeizurGoldSim Technology Group
Golder Associates Inc.Redmond, Washington
USA
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 2
Agenda
l Case study of an operational model for mine water management– Purpose of the model– Brief description of the system and model– Use of Dashboards to provide an intuitive user interface– Experience with model to date
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 3
GoldSim Mining Applications
l GoldSim has been used many times to support decision making in the mining industry– Mine Permitting, Regulatory Approval– Mine Development– Mine Closure
l This application was designed operational decision making on an ongoing basis
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 4
Antamina Mine
l Copper mine in Perul Key features include:
– Open Pit– Tailings Dam and Pond– Fresh water reservoir– Concentrator– Complex diversion system with multiple
routing options– Mine waters discharge to a river with
extensive human use (fishing, irrigation, etc.)
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 5
Aerial Photo
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 6
Antamina Mine Site
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 7
Antamina Mine Site
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 8
Receiving Waters
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 9
Partial Schematic Diagram
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 10
GoldSim Model Development
l Based upon existing spreadsheet water balance and mass balance models
l Expanded to reflect recent site configuration changes
l Added additional detail to water transfer system
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 11
GoldSim Model Overview
l Contains component models for the following:– Water Balance Model
• Climate model– Historical precipitation record (for benchmarking)– Stochastic precipitation record– Custom User-Defined precipitation events
• Runoff and Surface Evaporation (expressed as monthly coefficients)
– Simple Mass Balance Model• Includes Cu, Zn, Pb, Mo, So4, NH4, NO3
• Comparison with various criteria at selected locations
– Tailings Production Model (based on ore campaign)
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 12
Model Dashboard
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 13
Example Result (Pond Elevation)
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 14
Benchmark Results of Initial ModelComparación del nivel de la poza de relave
4002.0
4002.5
4003.0
4003.5
4004.0
4004.5
4005.0
4005.5
4006.0
4006.5
4007.0
4007.5
1/10
/02
11/1
0/02
21/1
0/02
31/1
0/02
10/1
1/02
20/1
1/02
30/1
1/02
10/1
2/02
20/1
2/02
30/1
2/02
9/1/
03
19/1
/03
29/1
/03
8/2/
03
18/2
/03
28/2
/03
10/3
/03
Date, días
Ele
vaci
ón
, m
Real
Gold Sim
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 15
Benchmark Results of Revised ModelComparación del nivel de la poza de relave
4002.0
4002.5
4003.0
4003.5
4004.0
4004.5
4005.0
4005.5
4006.0
4006.5
4007.0
4007.5
1/10
/02
11/1
0/02
21/1
0/02
31/1
0/02
10/1
1/02
20/1
1/02
30/1
1/02
10/1
2/02
20/1
2/02
30/1
2/02
9/1/
03
19/1
/03
29/1
/03
8/2/
03
18/2
/03
28/2
/03
10/3
/03
Date, días
Ele
vaci
ón
, m
Real
Gold Sim
GoldSim Advanced Training Workshop ©Golder Associates Inc., 2003
Slide 16
Next Steps
l Update mass loading model to reflect results of an ongoing geochemistry study
l Update model to reflect changes at the sitel Examine uncertainty in model parameters
(e.g., runoff coefficients) l Add submodel for the open pit and adjacent
basin
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