Open Pit Slope Depressurization

open pit design, the potential for slope failure, possible impacts on Fish Lake, and the geotechnical risk assessments carried out to date. Focus was placed on several questions provided by the Review Panel for this assignment:

01/01/2012 · Keywords: slope stability, slope design, engineering geology, fault, open pit mines, SOMAIR uranium mine, OCP phosphate mine 1. Introduction Slopes of mines and quarries, some of which may reach several hundred meters deep, must be regarded as "geotechnical works" in the sense that we speak of mine works or civil engineering works. Their design and their implementation must .

Yanfolila Gold Mine Open Pit Slope Depressurisation, Mali Gareth Lottreaux1, Karen Nicole King2, Angus Errol Rowland3 1 WSP, Hydrogeologist, Water Services Unit, 33 Sloane Street Bryanston, 2191 South Africa 2 WSP, Hydrologist, Water Services Unit, 33 Sloane Street Bryanston, 2191 South Africa 3 Piteau Associates, Hydrogeologist, Operations Manager, 25 Rudd Road, Illovo, South Africa 2196 ...

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

slope stability evaluation is important to keep the balance between safety of slopes and economic efficiency. In this study, optimum overall slope angle for open pit mines in Bizmişen region by conducting slope stability analyses is aimed to be determined. Additionally, the study presents the slope design chart constituted for iron ore mines

02/12/2017 · titled "Empirical Runout Prediction for Open Pit Slope Failures", coauthored by John Whittall, Erik Eberhardt, Derek Kinakin, and Oldrich Hungr. As lead author, John Whittall built the dataset, carried out the analysis, and wrote the text. The manuscript was reviewed by Erik Eberhardt, Derek Kinakin, and Oldrich Hungr. A conference paper is in review for the 2015 Slope Stability ...

09/01/2016 · Openpit slope failure –case study –groundwater problems Seepage and mineral precipitation Figures modified from Speight, 2002. A slope failure occurred at the Cleo Open Pit (Sunrise Dam Gold Mine, Western Australia) in December 2000. At the time of failure the pitfloor was at 100 m depth below surface. Two critical factors played a role in the failure: The top of the water table is at a ...

The book, which is entitled Guidelines for Open Pit Slope Design (1), describes the current "state of the art" of industry practice and provides a basis for the second stream of the project (research). By agreement amongst the sponsors, the document was framed to provide an overview of the design process and implementation for the "man/womanonthehill", the mine geotechnical ...

21/12/2019 · Ground control to be effective in an open pit mining requires the diligent appliion of geotechnical engineering practices to pit slope design, construction, maintenance, and abandonment. Geotechnical engineering deals with the whole spectrum of the natural geological materials ranging from very low strength soils to very high strength rocks.

Open pit slope stability analysis has been performed to assess the slope deformation, state of stresses at critically instable failure zones, different failure modes and safe functional design of excavated slopes using the numerical modeling technique, finite difference method. The purpose of slope stability analyses by numerical modeling in rock mechanics is not only to provide specific ...

In open pit mining, it is accepted to trade off some failures for steeper bench face angles, without compromising safety, since it is more economical to deal with regular cleanups . than to have higher stripping ratios. This is generally referred to as a "managed" approach to slope design. A design reliability of 80% is generally accepted in open pit design, which means allowing 20% of ...

Open pit mine plans define the complex strategy of displacement of ore and waste over the mine life. The objective of the mine plan is to maximize the future cash flows within the technical and physical constraints. Various mixed integer linear programming (MILP) formulations have been used for production scheduling of open pit mines. In the MILP formulation the slope constraints guarantee ...

Key Words: Slope stability, Open pit mining, GEOSLOPE, Cohesion, Angle of Internal Friction, Factor of Safety. in assessment of stability[2] and on Methods of analysis[2]. 1. INTRODUCTION In Opencast mines benches are developed with certain inclination known as slopes. These slopes must be stable during entire life of the mine, thus facilitating further development of benches. Such ...

IMPLEMENTATION OF REAL TIME GEOTECHNICAL MONITORING AT AN OPEN PIT MOUNTAIN COAL MINE IN WESTERN CANADA . Brian Klappstein,, PGeo., Manager of Long Range Planning, Grande Cache Coal LP, AB, Canada Gheorghe Bonci, PhD, PEng., Faculty at British Columbia Institute of Technology, BC, Canada Wayne Maston, PEng., Production Engineer Surface, Grande .

allowed me to work on a number of open pit slope design projects, including the case study documented in this project, which increased my appreciation of the slope design process. Luis Fernando Contreras taught me a great deal concerning the design of rock slopes. Many thanks for his willingness to share with me some of his earlier work on risk analysis for open pit mine slopes. Additionally ...

Pit Slope Stability —The Aitik Mine Revisited ... International Symposium in Slope Stability in Open Pit Mining and Civil Engineering at the XIV International Congress for Energy and Resource Mining in Seville. CIVIL MANUFACTURING MINING OIL GAS POWER GENERATION •Design of overall slopes is important –for open pits of all scales – and further underlined by the push towards larger ...

Mark's primary areas of practise are open pit and underground geomechanics and pore pressure assessments for large mining and civil projects that has included the development of a detailed knowledge of geomechanics monitoring and stress testing. On graduation from his undergraduate honours degree in 1994, majoring in Engineering Geology, Mark commenced his career as an .

Design and implementation of steeper slope angles on a kimberlite open pit width of a trim is 20 m and the length generally limited to 100 m. Figure 4 illustrates the layout of a typical waste rock blast at the Minm. The sequence of blasting starts with the firing of the presplit line, followed by the firing and mining of the production blast, after which the trim is blasted and mined. In ...

Open Pit Slope Depressurization using Horizontal Drains ... Key words: horizontal drain, slope stability, open pit, Vibrating Wire Piezometer, Indonesia. Introduction The Batu Hijau open pit mine (Figure 1) is owned and operated by PT Newmont Nusa Tenggara (NNT), and is loed in the eastern Indonesian archipelago, on the island of Sumbawa (Figure 2). Glossary of Mining Terms SEC. Open ...