This aspect is frequently underplayed which is a pity, for the whole process is totally dependent on the interpretation of the semivariogram. New approaches introduced include resourcereserve risk quantification, costeffective drilling programs, pit design and longterm production scheduling optimization with simulated orebodies, ore reserve classification, geologic risk. Determination of uncertainty in reserves estimate from analysis of production decline data. The complex interaction of ore and waste in the deposit prompted the use of the indicator kriging method to estimate the grade distribution of blocks in an attempt to model waste zones better. The parameters describe an underlying physical setting in such a way that their value affects the distribution of the measured data. Estimation theory prenticehall signal processing series book online at best prices in india on. American mathematical society colloquium publications, vol. For indicated and measured resources there may be sufficient information for an estimate of confidence along the lines proposed by harry parker. Estimates of the tonnage and average grade of ore deposits orereserve estimates are made for various purposes. Purchase geostatistical ore reserve estimation 1st edition.
Radar where the delay of the received pulse echo has to be estimated in the presence of noise. Evolution of resource and reserve estimation methods at pasminco broken hill mine. Since the publication in 1983 of theory of point estimation, much new work has made it desirable to bring out a second edition. Parameter estimation for reservoir simulation is an important future issue in order to. While the traditional chain ladder technique provides only a point estimate of the total reserve, it has become evident recently that actuaries also need a measure of variability in loss reserving estimation. There are different estimation methods see below used for different scenarios dependent upon the ore boundaries, geological deposit geometry, grade variability and the amount of time and money available. Despite this resurgence, no single book has been published that takes an interdisciplinary approach in addressing the full scope of mineral explorationfrom mining and extraction to economic evaluation, policies, sustainability, and environmental impacts. Dunn abstract the copper ore reserves at the chuquicamata mine were reestimated during march to june 1994, as part of a comprehensive audit of the mines overall short and longterm planning. Kriging is commonly described as a minimum variance estimator. Reserve estimation tonnage density free 30day trial. A mathematical model of a real reservoir is a set of partial differential equations.
Ore reserve estimation method by using geographic information systems. Estimation theory is a branch of statistics that deals with estimating the values of parameters based on measured empirical data that has a random component. Mineral deposits, exploration and orereserve estimation volume 3. Aspandiar, allison dugdale, neal leggo, ian glacken, bryan smith. Reserve analysis is a fundamental analytical technique that determines an estimated time reserve for a task and establishes scheduled duration for this task. This study investigated stochastic method of quantifying uncertainty in reserve estimation in. Any errors or omissions are the responsibility of the authors. Yet, with the several papers written on the subject, a general approach is in the offing. Ppt classification criteria powerpoint presentation. The model may be physical, such as a scaled laboratory model, or mathematical. Although many books mention that material balance calculation provides a check on the volumetric method but the no. Estimation theory for engineers roberto ognerit 30th august 2005 1 applications modern estimation theory can be found at the heart of many electronic signal processing systems designed to extract information. Initially, mik showed considerable promise as a new method that could more accurately estimate overall global mineral deposit. Ore reserve estimation and grade control, cimm, 9, spec.
Everything from grass root discovery, objective base sequential exploration, mining, beneficiation, extraction, economic evaluation, policies and acts, rules and regulations, sustainability, and environmental impacts is covered. There are different estimation methods see below used for different. Read fundamentals of statistical processing, volume i. Duane mcvay analysts increasingly have used probabilistic approaches to evaluate the uncertainty in. The program evaluations help to enhance program effectiveness, ensure more program consistency, and identify successful practices across the nation. The method of estimation is called deterministic if a single best estimate of reserves is made based on known geological, engineering, and economic data. Pdf risk assessment in reserve estimation and openpit. Quantifying uncertainty in reserve estimates casualty actuarial society eforum, spring 2009 2 12. Then you can start reading kindle books on your smartphone, tablet, or computer no kindle device required.
Ore reserve estimation and strategic mine planning stochastic models and optimizations with case studies. Deterministic and probabilistic estimation of reserves. Triangular method article about triangular method by the. Browse the amazon editors picks for the best books of 2019, featuring our favorite. Thus, there arises the need to evaluate the uncertainty of the reserve determined. Principles and applications, second edition, presents an interdisciplinary approach on the full scope of mineral exploration. Fractal models for ore reserve estimation sciencedirect. Introduction to robust estimation and hypothesis testing. Handbook of applied advanced geostatistical ore reserve estimation. Some practical aspects of ore reserve estimation at chuquicamata copper mine, chile prof.
Parameter estimation in reliability and life span models statistics. Resource and reserve calculation in seamshaped mineral. This book describes the advances made in the last 15 years which have practical applications in ore reserve estimation. The inclusion of the new material has increased the length of the book from 500 to 600 pages. The process of simulating petroleum reservoirs has been thoroughly described by peaceman 24 as the. Alaphia wright department of mining engineering, university of zimbabwe, p. To put relative estimation into practice, many teams play a nifty game called planning poker. Ore reserve estimation and strategic mine planning. Ore reserve estimation techniques by cross section method. Geostatistical ore reserve estimation focuses on the methodologies, processes, and principles involved in geostatistical ore reserve estimation, including the use of variogram, sampling, theoretical models, and variances and covariances. Box mp 167, mount pleasant, harare zimbabwe received february 18, 1988. Indicator kriging uses indicator functions instead of the process itself, in order to estimate transition probabilities.
Ore reserve estimation using localized trend analysis. The choice of which kriging method to be used depends on the characteristics of the data and the type of. Mineral reserves or ore reserves are valuable and legally, economically, and technically feasible to extract. Mining science and technology, 7 1988 161165 elsevier science publishers b. Mineral resource classification news newspapers books scholar jstor october 2014. The technique allows using time reserves to define and protect duration estimates through offsetting unexpected issues that arise. A method of ore reserve estimation based on the assumption that a linear relationship exists between the grade difference and the distance between all drill. Introduction to robust estimation and hypothesis testing, second edition, focuses on the practical applications of modern, robust methods which can greatly enhance our chances of detecting true differences among groups and true associations among variables. Federal reserve bank of new york staff reports characteristicsorted portfolios. In this study, a reserve estimation attempt in a silver ore deposit was carried out by the help of geographic information systems gis.
The various stages of a geostatistical orereserve estimation procedure are explained, leading to the production of block local reserves and overall global reserves. Read, highlight, and take notes, across web, tablet, and phone. Sinclair and m vall6e the canadian institute of mining and metallurgy. The study concludes that enkf can provide satisfactory results for reservoir reserve parameter estimation. What was said in previous years amounts more or less to the following four. The method of estimation is called probabilistic when the known geological, engineering, and economic data are used to generate a range of estimates and their associated probabilities. Ore estimation uk tetra tech supports resource evaluations with initial data collection, drill hole planning, and mineral reserve estimates. Mineral resource and ore reserve estimation the ausimm guide. Results indicate that the new approach used in reserve estimation process gives 1. Dowd 38 used geostatistical simulation to develop sensitivity and risk analyses involving reserve estimation and openpit planning, considering uncertainty in the ore reserve. Resource estimation is used to determine and define the ore tonnage and grade of a geological deposit, from the developed block model. Covers latest developments in robust regression covers latest improvements in anova.
New approaches introduced include resource reserve risk quantification, costeffective drilling programs, pit design and longterm production scheduling optimization with simulated orebodies, ore reserve classification, geologic risk. Mineral resource classification is the classification of mineral resources based on an increasing. National institute of technology, rourkela c national institute of technology rourkela certificate this is to certify that the thesis entitled ore body modelling and comparison of. This category implies a clearly lower status to the ore reserve in terms of degree of assurance, in spite of being still within the. Buy fundamentals of statistical processing, volume i. Fractal models belonging to nonlinear mathematics are effective tools for describing the natural variability and skewed distribution of geological objects. Basics introduction of all parameters for reserve estimation by volumetric method and production forecasting. They may be made by examining engineers as a basis for placing a value on a mining property in connection with reports on behalf of owners or vendors, on the one hand, or for prospective purchasers or lessees, on the other. Ore reserve estimation methods, models and reality proceedings of the symposium sponsored by the geology division of clm, and held in montreal, quebec, may 1o11, 1986 edited by m. Agile relative estimation heres a super simple explanation.
Petroleum reserves estimation methods 20032004 petrobjects. Estimates of the tonnage and average grade of ore deposits ore reserve estimates are made for various purposes. Reserve estimation free download as powerpoint presentation. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Mineral resources and reserves can be further classified depending on their geological confidence. Multipleindicator kriging is a version of indicator kriging working with a family of indicators. My article planning poker at pace explains the mechanics of this effective technique and offers a selection of tips and tricks to. Blalst synopsis matheron, geoslalislical method or the estimation of ore reserves has been developed to the point al which reallife problcllll may be handled effectively. The purpose of the execution and implementation of a reserve analysis is the establishment of an estimated reserve that can be used for the purposes of establishing a schedule duration, any and all estimated costs, the budget, as well as the complete funds assigned or allocated to the project. Based on the fractal numbersize model, we established a new reserve estimation tool, called fractal models for reserve estimation abbreviated as fmre, in this paper. Estimation of an ore reserve requires the input of mining engineers. Geostatistical ore reserve estimation 1st edition elsevier.
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