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A risk consequence approach to open pit slope design

2009-8-26  A risk consequence approach to open pit slope design by P.J. Terbrugge*, J. Wesseloo*, J. Venter*, and O.K.H. Steffen* Synopsis Open pit slope design has conventionally been effected as a bottom-up function utilizing available geotechnical information. This results in a decision criterion based on probability of failure and factor of

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(PDF) A risk consequence approach to open pit slope design

A risk consequence approach to open pit slope design The diagonal dashed lines in Figure 10 are constant risk lines, i.e. the risk along these lines can be expressed in terms

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A RISK CONSEQUENCE APPROACH TO OPEN PIT SLOPE

2006-3-22  A RISK CONSEQUENCE APPROACH TO OPEN PIT SLOPE DESIGN Dr O K H Steffen, Mr P J Terbrugge, Dr J Wesseloo, Mr J Venter SRK Consulting, South Africa ABSTRACT Open pit slope design has conventionally been effected as a bottom up function utilising available geotechnical information. This results in a decision criterion based on

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(PDF) A risk consequence approach to open pit slope design ...

The risk/consequence analysis in design Benefits of adopting the risk/consequence approach to slope design for open pit mining operations, effectively allow the owners to Introduction define their risk criteria taking account of the specific consequences of potential failures, or Slope design has over the years become the the benefit of steeper ...

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[PDF] A risk consequence approach to open pit slope design ...

Open pit slope design has conventionally been effected as a bottomup function utilizing available geotechnical information. This results in a decision criterion based on probability of failure and factor of Safety with a risk assessment being carried out on the proposed design slopes. The design approach recommended reverses the process using fault event tree decision methodology.

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A risk consequence approach to open pit slope design — the ...

T1 - A risk consequence approach to open pit slope design. AU - Steffen, O.K. AU - Terbrugge, P.J. AU - Wesseloo, Johan. AU - Venter, J. A2 - Stacey, T.R. PY - 2006. Y1 - 2006. N2 - Open pit slope design has conventionally been effected as a bottomupfunction utilizing available geotechnical information.

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A RISK CONSEQUENCE APPROACH TO OPEN PIT SLOPE

Open pit slope design has conventionally been effected as a bottomup function utilizing available geotechnical information. This results in a decision criterion based on probability of failure and factor of Safety with a risk assessment being carried out on the proposed design slopes.

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Risk Management – Geomechanics Application for Open

2019-12-21  for Open Pit Slope Design (Guidelines (2)), risk is defined as the chance of something happening that will have an impact on objectives. Risk is often defined quantitatively in industry practice as the probability of failure (PoF) times the consequence of failure, or simply: Risk = PoF x Consequence

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(PDF) Slope Stability Acceptance Criteria for Opencast ...

A risk consequence approach to open pit . slope design. J. Southern African Institute of Mining and Metallugy, Vol. 106, pp. 503-511. U.S. Army Corps of Engineers (1995).

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Geotechnical risk management for open pit mine closure:

Geotechnical risk management for open pit mine closure: a sub-arctic and semi -arid case stud y. ... associated with open pit closure. Although these consequences are potentially significant, they are however ... Establishing safe setback distances to define the limits for public access is the preferred approach to minimise

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(PDF) Slope Stability Acceptance Criteria for Opencast ...

A risk consequence approach to open pit . slope design. J. Southern African Institute of Mining and Metallugy, Vol. 106, pp. 503-511. U.S. Army Corps of Engineers (1995).

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Risk assessment workbook for mines

2015-11-5  The highest risk levels (i.e. most severe consequences and highest likelihood of occurring) should be controlled or minimised first. 4. Workplace Risk Assessment and Control (WRAC) WRAC is a proactive or pre-event approach to examining any or all parts of the work site to ensure that risks are understood and controlled to a reasonable level. It is

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Geotechnical risk management for open pit mine closure:

Geotechnical risk management for open pit mine closure: a sub-arctic and semi -arid case stud y. ... associated with open pit closure. Although these consequences are potentially significant, they are however ... Establishing safe setback distances to define the limits for public access is the preferred approach to minimise

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Geotechnical risk analysis for the closure alternatives of ...

Abstract: The development of the geotechnical risk model for the Chuquicamata mine started in 2005 and included the safety and economic impacts of slope failures at different scales (Tapia et al. 2007; Steffen et al. 2008). The model has been updated recently

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Long-term production scheduling modeling for the open pit ...

2016-9-23  The economic consequence of the modern day mine is highly dependent on careful management of cash flows and risk during production. Mine planning is a critical mechanism at all stages in the life of an open pit mines that major element of mine planning is the optimization of long-term production scheduling problem (LTPSP) within operational constraints such as mining slope, grade

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Risk Appraisal Approach of Open-pit Slope Design in Indian ...

2019-3-31  Risk Appraisal Approach of Open-Pit Slope Design Mining is a high-risk business and, due to the fact that owners have an appreciation and an appetite for risky ventures, is often successful. In contrast, technical specialist is generally risk averse and have an appetite for technical excellence.

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A Practical Example of a Risk-Based Approach to the Design ...

A risk-based approach to optimising pit wall slope angles was trialled in the design of a 60m deep open pit in extremely weathered and distinctly weathered materials in the Kalgoorlie area. The pit used for this approach was Stage 1 of a three-stage open pit project. The Stage 3 pit will require long term stability, as it will contain the portal for a long life underground project.

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Summary Long-Term Health Consequences of Exposure to ...

The committee decided that the best approach for determining the long-term health consequences of exposure to burn pit emissions was to follow the risk assessment process originally developed by the NRC in 1983, updated in 2009, and used by many

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A Value at risk approach to the assessment and evaluation ...

The open pit of Telfer Gold Mine, Newcrest Mining, located in Western Australia, is used as a case study to illustrate the implementation of the proposed VaR approach to assess the economic risks and returns associated with different pit slope designs.

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A simulation-based risk management approach to locating ...

The ultimate pit limit is highly subject to the commodity market and geological uncertainties. An overestimation of the pit limit increases the haulage costs, while pit limit underestimation will impose relocation/rehandling cost or leaving tied up ore. Hence, this requires a risk management approach to evaluate different facility locations.

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(PDF) A simulation-based risk management approach to ...

Facility location is one main decision has to be taken at the primary stages of open pit mine design. The location mainly depends on ultimate pit limits and haulage costs. Undesired technical and economic conditions, such as rising fuel, tire and ... A simulation-based risk management approach to locating facilities in open-pit mines under ...

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A Value at risk approach to the assessment and evaluation ...

Lai, F. J. K. P. (2012). A Value at risk approach to the assessment and evaluation of economic risk and return associated with large open pit slope design. PhD thesis, Engineering - Civil and Environmental Engineering, The University of Melbourne.

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A Value at risk approach to the assessment and evaluation ...

The open pit of Telfer Gold Mine, Newcrest Mining, located in Western Australia, is used as a case study to illustrate the implementation of the proposed VaR approach to assess the economic risks and returns associated with different pit slope designs.

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Uncertainty and Reliability Analysis of Open Pit Rock ...

2018-8-29  Terbrugge PJ, Wesseloo J, Venter J, Steffen OKH (2006) A risk consequence approach to open pit slope design. ARMA American Rock Mechanics Association, Johannesburg. Google Scholar Tonon F, Bernardini A, Mammino A (2000a) Determination of parameters range in rock engineering by means of random set theory.

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Summary Long-Term Health Consequences of Exposure

The committee decided that the best approach for determining the long-term health consequences of exposure to burn pit emissions was to follow the risk assessment process originally developed by the NRC in 1983, updated in 2009, and used by many federal and private organizations for protecting human and environmental health.

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A simulation-based risk management approach to locating ...

2018-9-26  In this paper, a generic quantitative simulation-based approach was developed to manage the risk associated with the facility locations in open-pit mining because of price and grade uncertainties. The methodology was described by using a hypothetical 2D geological block model.

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Risk assessment workbook for mines

2015-11-5  The highest risk levels (i.e. most severe consequences and highest likelihood of occurring) should be controlled or minimised first. 4. Workplace Risk Assessment and Control (WRAC) WRAC is a proactive or pre-event approach to examining any or all parts of the work site to ensure that risks are understood and controlled to a reasonable level. It is

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8 Possible Consequences of Avoiding Proactive Risk

2017-8-23  Since risk management should be about enabling informed and intelligent decision-making, then the consequences of not being proactive in risk management can include ill-informed decisions. Poor decisions lead to all kinds of poor performance,

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Environmental Consequences of Open Pit Mining - Blogger

2012-3-14  By its very nature, open pit mining (also known as strip mining and opencast mining) is environmentally destructive. Surface mining operations, especially those that are large-scale, always alter and disturb the Earth’s surface, even if what are usually euphemistically known as “effective” mitigation measures are applied and the site is restored to a condition said to “approach” or ...

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A simulation-based risk management approach to locating ...

A simulation-based risk management approach to locating facilities in open-pit mines under price and grade uncertainties Highlights•Managing the risk of facility location in open pit mines by using simulation.•Considering price and grade uncertainties as the main ...

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