Design of the Pierina waste dump

Abstract Development of Barrick Gold’s Pierina gold mine in north-central Peru requires construction of a waste dump for disposal of nonore grade materials stripped from the open pit to expose the ore. The waste dump site is located near the open pit in a U-shaped valley that is underlain by thin colluvial and morainal soils with locally thick peats and glaciolacustrine deposits. Bedrock underlying the site consists of variably weathered volcanics. The site is subject to moderately high seasonal rainfall and significant seismicity. The geotechnical quality of the waste rock is highly variable, ranging from low-quality, degradable, soil-like materials containing appreciable quantities of silt and clay, to high-quality, hard, durable, blocky waste rock. A hybrid dump design concept was developed that requires in-pit segregation of highand low-quality waste, and selective placement of materials in the dump to maximize stability and enhance internal and subsurface drainage. The design includes a rock drain beneath the dump along the axis of the valley and a series of connected finger drains. Extensive peripheral diversions and stormwater control measures to inhibit infiltration of precipitation are also included.
This paper discusses the unique challenges
presented by the site and waste materials,
the design methodology and stability analyses, and planned monitoring systems.
Keywords: Waste rock dump, Seismicity, Risk assessment, Pore pressure, Rock drain
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Summary: None.
Publication: CIM Bulletin
Author(s): S. Ural, A.H. Onur
Keywords: None.
Issue: 1073
Volume: 96
Year: 2003
Text
Publication: CIM Bulletin
Author(s): E. Fauveau, K. Hambrice
Issue: 1073
Volume: 96
Year: 2003
Text
Summary: This paper presents an objective model for
the estimation of fire risk potential of an underground coal mine panel by the bord-and-pillar method of mining where extraction is carried out by depillaring with caving. The fire risk rating procedure for the estimation of fire risk potential involved in the panel is described in detail. The model developed thereof is tested with the field data collected from different collieries across the country along with the laboratory data for critical...
Publication: CIM Bulletin
Author(s): T.R. Roy
Keywords: Fire risk potential, Underground
coal mining, Bord-and-pillar method, Caving
Issue: 1073
Volume: 96
Year: 2003
Text
Summary: The CANMET Western Research Centre
(CWRC) has developed a hydrocyclone model
simulation of dewatering and fine particle separation circuits. The simulation is based on an existing empirical model. Utilizing a cyclone manufacturer’s published data, some modifications have been developed and integrated into the model. Feed stream characteristics, cyclone mechanical dimensions, and operating conditions are used in the CWRC modelling simulation. The computer results are presented in 3D graphs and...
Publication: CIM Bulletin
Author(s): A.I.A. Salama
Keywords: Dewatering circuits, Hydrocyclone model simulation, Oil sands, CANMET Western Research Centre (CWRC)
Issue: 1073
Volume: 96
Year: 2003
Text
Summary: This paper discusses the aspects of tracking
cutters related to the computer-aided design of shearer drums. A comprehensive computer analysis of drum dynamic parameters for multi-tracking tool arrangement is not presently available, as the current computer
programs mainly consider the aspects of single tracking. Despite the fact that the single-tracking arrangement is recommended for efficient cutting, some major drum manufacturers have been seen to persistently adhere to multi-tracking,...
Publication: CIM Bulletin
Author(s): O.Z. Hekimoglu, M. Ayhan, B. Tiryaki
Keywords: Tracking cutters, Computer-aided design, Shearer drums, Tool arrangement
Issue: 1073
Volume: 96
Year: 2003
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