Modeling the dewatering and depressurization of the Lihir open-pit gold mine, Papua New Guinea

White, Sarahlouise; Creighton, Ashley; Bixley, Paul F.; Kissling, Warwick M.

doi:10.1016/j.geothermics.2003.09.011

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…Certainly, a large number of researchers have investigated the application of HPC to subsurface simulation. Most of this research has focused on the application of high performance computing to solve hypothetical subsurface problem scenarios [ Kolditz et al , 2012 ; Navarre-Sitchler et al ., 2013 ] or real-world ones [ Tompson et al , 1998 ; Zhang et al , 2003 ; White et al , 2004 , 2008 ; Yamamoto et al , 2009 ; Hammond and Lichtner , 2010 ; Hammond et al , 2011 ; Nowak et al , 2011 ; Yabusaki et al , 2011 ; Chen et al , 2012 , 2013 ], with little to no analysis of parallel performance. Research on the scalability of parallel subsurface simulators has often focused on hypothetical scenarios or proofs of concept [ Gwo et al , 2001 ; Jones and Woodward , 2001 ; Hammond et al , 2005 ; Kollet and Maxwell , 2006 ; Kollet et al , 2010 ; Guo et al , 2013 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the performance of parallel subsurface simulators: An illustrative example with PFLOTRAN

2014

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[1] To better inform the subsurface scientist on the expected performance of parallel simulators, this work investigates performance of the reactive multiphase flow and multicomponent biogeochemical transport code PFLOTRAN as it is applied to several realistic modeling scenarios run on the Jaguar supercomputer. After a brief introduction to the code's parallel layout and code design, PFLOTRAN's parallel performance (measured through strong and weak scalability analyses) is evaluated in the context of conceptual model layout, software and algorithmic design, and known hardware limitations. PFLOTRAN scales well (with regard to strong scaling) for three realistic problem scenarios: (1) in situ leaching of copper from a mineral ore deposit within a 5-spot flow regime, (2) transient flow and solute transport within a regional doublet, and (3) a real-world problem involving uranium surface complexation within a heterogeneous and extremely dynamic variably saturated flow field. Weak scalability is discussed in detail for the regional doublet problem, and several difficulties with its interpretation are noted.

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Section: Introductionmentioning

confidence: 99%

Evaluating the performance of parallel subsurface simulators: An illustrative example with PFLOTRAN

2014

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“…Variation of the area of influence with the mine progress using the geo-statistical method has been analysed for an opencast mine in India (Majumdar and Sundaram, 1991). The ground water in an open pit gold mine is estimated by numerical modelling using TOUGH 2 software (White et al, 2004). A numerical finite element model is used for calculating ground water inflow in open pit mine (Aryafar et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The mine water reduction, reuse and recycle for different case studies around the world has been discussed and water system model was developed to show the potential water savings (Gunson et al, 2012). An optimum water reticulation strategy was proposed to minimise the total operating cost of deep mine reticulation Reed, 1988, Singh andAtkins, 1985a,b Prediction of surface water and ground water inflows in mine Analytical Equivalent well and two dimensional approach Rapantova et al, 2007 To study the features and problems of numerical modelling for mining Numerical MODFLOW software Majumdar and Sundaram, 1991 Estimate the area of influence of ground water pumping in opencast mine Statistical Geo-statistical method Adams and Younger, 2007 To develop techniques for ground water modelling in mine system Numerical GRAM/MODFLOW software White et al, 2004 Estimation of ground water for open pit gold mine Numerical TOUGH 2 software Johnson and Cooper, 2010 Estimate mine water inflow rate Analytical Spreadsheet application Banks, 2001 Estimate ground water inflows for deep mine Analytical Head dependent mine water filling model system (Vosloo et al, 2012). The water and energy cost for long distance pipe line has been optimised for efficient utilisation of water and energy (Ihle, 2013).…”

Section: Introductionmentioning

confidence: 99%

Water and energy assessment for dewatering in opencast mines

Sahoo

Bandyopadhyay

Banerjee

2014

Journal of Cleaner Production

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“…The presence of hot springs and fumaroles in the Luise Caldera indicates persistent geothermal activity in the mining region. Studies (WHITE et al, 2003) have indicated high temperatures (120-250°C) and a high geothermal pressure underneath the mining areas.…”

Section: Introductionmentioning

confidence: 99%

Passive Seismic Monitoring of Mine-scale Geothermal Activity: A Trial at Lihir Open Pit Mine

Creighton

Gough³

2009

Pure Appl. Geophys.

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The Lihir open pit mine in Papua New Guinea is located inside an old volcano where geothermal activity is strongly present. Outbursts of hot water and steam into the mining areas were a major safety concern. Passive seismic monitoring was carried out at the mine to investigate whether the geothermal activities could be detected and located using microseismic techniques in a mining environment. In this trial, sixteen triaxial geophones which can withstand temperature up to 200°C were used and installed in four deep boreholes inside the pit. The microseismic events were discriminated using the STA/LTA triggering criterion. During 6 weeks of monitoring, more than 17,000 events were recorded. Approximately 12% of the events showed harmonic vibration characteristics similar to those observed in other geothermal and volcanic areas, suggesting that the geothermal activity inside the pit was captured by the microseismic monitoring system. More than 75% of the events present both P and S waves and they were interpreted to be associated with rock fracturing due to stress release near the bottom of the pit. Many geothermal-type events were located in areas where shear events occurred, implying that the detected geothermal events were not far from the mining area below the pit and they may also be associated with mining. The borehole installation of the geophones significantly reduced the interference of mining noise and achieved good observation of the seismic events. However, equipment installation requires great attention as the geophones may be destroyed due to unexpected rising temperature within the boreholes.

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Modeling the dewatering and depressurization of the Lihir open-pit gold mine, Papua New Guinea

Cited by 10 publications

References 3 publications

Evaluating the performance of parallel subsurface simulators: An illustrative example with PFLOTRAN

Evaluating the performance of parallel subsurface simulators: An illustrative example with PFLOTRAN

Water and energy assessment for dewatering in opencast mines

Passive Seismic Monitoring of Mine-scale Geothermal Activity: A Trial at Lihir Open Pit Mine

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