open pit slope depressurization

You may also like

Open Pit Mine Design | US Minneapolis - Itasca Consulting ...

How much slope depressurization is appropriate in a large open pit environment is difficult to quantify, and often a philosophy of "more must be better " has to be adopted due to the lack of integrated modelling tools that are available to assist in the optimization of the slope design.

Slope Stability 2011: Author Index | CARMA

Open Pit Depressurization is the process of removing tensions or pressure from different areas of a mine. Depressurization helps to make open pit mines more stable and secure. By using an integrated mine slope depressurization program the likelihood that mine plans can be achieved, and at an acceptable level of risk increase drastically.

Open Pit Mine Design | Australia - Itasca Australia Pty Ltd.

Aug 01, 2004· The open pit at the Lihir Gold Mine, Papua New Guinea, is planned ultimately to reach more than 200 m below sea level. Cooling and depressurization of the geothermal resource associated with the gold mineralisation is an essential part of the mining operation.

CiteSeerX — Open Pit Slope Depressurization using ...

The first book, Guidelines for Open Pit Slope Design (2009), links project research with best practice in open-pit data collection and management; slope design, management and monitoring; and mining and risk management. ... and how the performance of a slope depressurization program is monitored and reconciled with the design. ...

New Method Improves Hydrogeologic Data at Copper Mine | …

Batu Hijau Open Pit Slope Design Based on Geotechnical Models and Past Performance. Leoni, L. Use of Ground-Based Synthetic Aperture Radar to Investigate Complex 3-D Pit Slope Kinematics. IBIS-M, an Innovative Radar for Monitoring Slopes in Open-Pit Mines. Li, C. Load Increasing Method for Analysis of Slope Earthquake Stability. Li, X.P.

Open-pit mining - Wikipedia

Figure 1: Final contour of open pit Drmno in the end of exploitation. Figure 2: Line of waterproof screen. Slope stability in water prof screen zone Influence of open pit slope on waterproof screen stability are investigate using results of new geotechnical and geomechanical investigation and using appropriate software for different

Knight Piésold - Pacific Booker

The Role of Depressurization in Stabilizing a Large Pit Slope in Northern Peru V. Perez, H. Robles, F. Soto, G. Beale, M. McGlone Applicability of the 'Observational Method' to Manage Slope Depressurisation in a Large Open-Cut Mine, South East Prongs Pit, Tom Price, Western Australia

(PDF) Optimization of Open-Pit Mine Depressurization ...

Dowling, J, Beale, G & Reidel 2011, 'A Framework for Mine Dewatering and Pit Slope Depressurization Design and Implementation', in E Eberhardt & D Stead (eds), Proceedings of the 2011 International Symposium on Rock Slope Stability in Open Pit Mining and Civil Engineering, Canadian Rock Mechanics Association, Vancouver.

Constructive Parameters of Open Pit Drmno Final Mine Slope ...

Concurrent dewatering and slope depressurization operations have been underway at the Escondida open pit since 1996. A hydrogeological investigation has been undertaken as part of the depressurization operation on the north wall. It has shown that there are two distinct hydrogeological units in the slope, the altered and unaltered Escondida ...

Runout analysis and mobility observations for large open ...

Itasca specializes in the assessment of slope stability and design of pit slopes on bench, inter-ramp, and global mine scales. Itasca performs slope, instrumentation, and remediation design at many of the world's largest open pit mines. Expertise in slope stability is not limited to open pit slopes.

SLOPE STABILITY PRISM MONITORING: A GUIDE FOR …

Nov 23, 2013· Pit Slope Depressurisation Drains • Even when an open pit is dewatered by wells or in-pit pumping, high pore water pressures may remain in the pit slopes, reducing geotechnical stability • There may be a need for a programme of slope depressurisation to allow steeper pit slopes to be used • This may be achieved by small diameter angled or ...

Paper: Development of a mine dewatering and pit slope ...

Aug 01, 2004· The open pit at the Lihir Gold Mine, Papua New Guinea, is planned ultimately to reach more than 200 m below sea level. Cooling and depressurization of the geothermal resource associated with the gold mineralisation is an essential part of the mining operation.

Making Open Pits Safer, By Design | E & MJ

slope distances – with ppm applied (yellow) and without ppm applied (purple) 40 Figure 6 - GeoMoS utilisation graph showing utilisation, utilisation targets and actual availability 59 Figure 7 - Typical layout of an open pit operation with monitoring points 73 Figure 8 - "Limit Classes" 75

Case Examples of Open Pit Mine Drainage

The rocks that will form the open pit slopes at the NorthMet deposit are strong to extremely strong, with moderate to wide fracture spacing. On some slope orientations, adversely oriented ... particular if adequate slope depressurization is not achieved and/or if joint surfaces are significantly altered. 2. On West Pit Sectors II and IIIa ...

Mine dewatering techniques - SlideShare

Open Pit Slope Depressurization using Horizontal Drains – a Case Study Simon Leech a), Matthew McGann b) a) PT Newmont Nusa Tenggara, Geotechnical and Hydrogeological Dept., Jl. Sriwijaya # 258 Mataram 83126, Indonesia email: [email protected] tel +62

Knight Piésold - Pacific Booker

Slope cases; TSLOPE allows the user to set up a number of slope cases based on the slope model and material parameters (density, shear strength). The slope cases may be either 3D, or 2D. For the open pit slope, we created a 3D slope case using the composite topographic surface, and the composite failure surface as discussed in section 4.

(PDF) Optimization of Open-Pit Mine Depressurization ...

Pit water management for the open pit development will include surface water interception and diversion, slope depressurization and a pit dewatering system. A detailed pit hydrogeological study is scheduled to be conducted by others. The design basis for the recommended pit slope angles requires the implementation of careful

Fundamentals of slope design Keynote address at Slope ...

Introduction. Recent large open pit slope failures that have caused significant damage to mine infrastructure and equipment demonstrate shortcomings in current practices used to estimate landslide runout and establish exclusion zones for an impending failure (e.g., Farina and Coli 2013; Pankow et al. 2014).Objectively forecasting the zone of impact of a potential slope failure, in addition to ...

Open Pit Slope Depressurization using Horizontal Drains ...

Open Pit Mine Drainage by 0. L. Pentz, Vice President, Golder Associates, Kirkland, Washington, USA The methods of optimizing slope angles of open pit mines are limited. Reduction in the natural groundwater pressures is perhaps the most significant method available to the mine designer.

Open Pit Mine Design | US Denver - Itasca Denver, Inc.

The shear strength reduction method is now widely used in open pit slope stability studies because it includes all the benefits of limit equilibrium analyses and it allows the user to study slope displacements that are critical in the evaluation of open pit stability. An …

Open Pit Mine Design | US Minneapolis - Itasca Consulting ...

WSP USA developed a method of pit hydrogeology and slope depressurization at Sierrita Copper Mine that uses a fiberglass rod instead of the more traditional steel or PVC pipe in order to install groundwater pressure monitoring sensors – known as vibrating wire piezometers (VWPs) – to depths greater than 1,000 feet, as well as help guide geophysical logging tools in horizontal drain holes.

(PDF) Ground Characterization and Design of a Drainage ...

Introduction. Recent large open pit slope failures that have caused significant damage to mine infrastructure and equipment demonstrate shortcomings in current practices used to estimate landslide runout and establish exclusion zones for an impending failure (e.g., Farina and Coli 2013; Pankow et al. 2014).Objectively forecasting the zone of impact of a potential slope failure, in addition to ...