Modelling the nugget effect mine splays effect coarse gold mineralized portions always produces very high assays, and our first response is excitement at the thought of high grade. Johnstone gemc0111 africa pty ltd, northlands, south africa t. Fractal relationships and spatial distribution of ore body modelling. Mineral resource reports form the basis for mine valuations and are therefore of critical importance.
Ore body modelling and comparison of different reserve estimation techniques. The mining and exploration industry spend too little time interrogating the data that is most routinely used. In the cases where borehole data were unavailable, the presence of copper ore was predicted by artificial neural network and cokriging methods, and the three. One of the most common diagrams you see on stock market releases and on any wall in a mine office is a long section grade thickness plot of the ore body. Geostatistics for conditional simulation of ore bodies. In an everchanging world of uncertain markets, mismatches between demand and reserve base growth, new emerging technologies, and new technical problems and their solutions, this book represents a contribution to both old and new dimensions of a most intricate. The results show that the proposed interpolation algorithm can depict the stratiform structure of bauxite deposits and that the uncovered bauxite deposit has high proportions of highgrade and rich ore. Estimation space of block model was defined as x 477835, y3112339 and z1920 m. The mining area can be viewed as a big room with some randomly shaped pillars in it, as shown in fig. Fractal relationships and spatial distribution of ore body. An integrated geologicalgeostatistical approach chapter pdf available january 2000 with 1,868 reads. An ore deposit is a welldefined mineral deposit that has been tested and found to be of sufficient size, grade, and accessibility to be extracted i. This is achieved through geological modelling of the threedimensional 3d shape and properties of the materials present in mineral deposits, and the presentation of results in a form which is.
Of key importance to the project is improving the efficiency of the production process and reducing costs. Pdf on feb 3, 2012, kaan erarslan and others published computer aided ore body modelling and mine valuation find, read and cite all the research you need on researchgate. Author links open overlay panel shaofeng wang a xibing li a shanyong wang b qiyue li a chong chen a fan feng a ying chen a. One major input for resource estimation is quantitative mineralogy information, which is increasingly being recognized as more important than mere elemental assays. Datamine is the worlds leading provider of technology to seamlessly plan and manage mining operations. This leads into the ore mineralization to be interpreted as either discontinuous, small ore body, pocketslenses, or large laterally continuous ore body. Threedimensional orebody modelling and intellectualized longwall mining for stratiform bauxite deposits. I geochemical modelling presented by james cleverley and nick oliver as part of the jcuegrucrc supported minerals masters program, may 2005. This tutorial uses techniques for estimating the volume and thickness of an ore that are employed by gis specialists working in the mining industry. Department of mining engineering for permitting us to carry on the topic ore body modelling and comparison of different reserve estimation techniques and. Investigating the applicability of induced polarization.
The key is to redce uncertainty by applying as much geological input dunng the creation of a model, and to develop tools to. Pdf ore body modelling concepts and techniques pranav. In certain areas, the footwall contact is a distinct change from ore to total waste rock, but the hangingwall contact is never as easily defined. Rely on us for orebody modeling, resource estimation and. Jan 15, 2015 this leads into the ore mineralization to be interpreted as either discontinuous, small ore body, pocketslenses, or large laterally continuous ore body. Estimates of the tonnage and average grade of ore deposits orereserve estimates are made for various purposes. Northparkes was to be the first australian mine to utilise this mining technique.
National institute of technology, rourkela c national institute of technology rourkela certificate this is to certify that the thesis entitled ore body modelling and. According to geometry of ore body and block dimensions, number of rows, column and levels. Practical applications of a computer orebody modelling system. Geomine geomodeler geomodeler, the mining and exploration industrys high performance 3d geological software tool for resource modelling and estimation, is engineered to model and visualize large and complex deposits. Ore body distal rocks pt gradient 200ooc,c, bars 380ooc, 2500 bars fluid dominated rock dominated.
Simulation modeling of an iron ore operation 102 introduction an iron ore mining company in western australia has recently established a task force of staff and consultants to refurbish its product quality system. How digital tools are helping to reduce risk and reap rewards. Ore body modelling and comparison of different reserve estimation techniques a thesis is submitted in partial fulfillment of the requirements for the degree of bachelor of technology in mining engineering by manasa chandra moharaj 110mn0435 yeshi wangmo 110mn0440 under the guidance of prof. Underpinning geomodeler is its innovative 2in1 hybrid modeling kernel that supports both 3d block modeling with subblockingand 2d gridded seam. Geostatistical modelling of an orebody as an aid to mine. Jorc learn about mine planning and mine startups analyse mining methods, pr ocesses and practices surface and underground understand mine closur es, environmental, safety and legal considerations. This phase of the mining project has several distinct components. Mining companies obviously need accurate ore reserve estimates since the quality of the estimate may directly affect the companys profitability. University of dar es salaam college of natural and applied sciences conas geology department course gy 4 mining geology ore body models. Surfacebased dynamic anisotropic interpolation technology avoids the common pitfall of oversmoothing in resource estimation. When modelling of the texture of a raw ore is based on image analysis, the first step consists in identifying its mineralogical species. Estimates of the tonnage and average grade of ore deposits ore reserve estimates are made for various purposes.
Ore body modelling and comparison of different reserve estimation techniques by m c moharaj and y wangmo download pdf 2 mb. Investigating the applicability of induced polarization method in ore modelling and drilling optimization. Simulation of a mining value chain with a synthetic ore. Simulation of a mining value chain with a synthetic ore body. What are they and challenges in creating ore body models magohe stephen20110403217 2. 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.
Gemecs is a geological company offering geological and consulting services to the mining, mineral and coal resource industries. Ore liberation modelling 655 the volume distribution of. Understand the mak eup of the australian mining industry discover mine exploration techniques understand mine geology and ore body modelling. Sgs provides independent interpretation and modeling services for the exploration industry. Underground mining methods and applications production headframe hans hamrin 1. Threedimensional orebody modelling and intellectualized. It is defined as a concentration of minerals that can be exploited and turned into a saleable product to generate a financially acceptable profit under existing economic conditions.
In 2015 the collection of geoscientific data, whether it is remotely sensed geophysical information, bulk. When modelling of the texture of a raw ore is based on image. Geological software for resource modelling and estimation. Unusable structural data is commonly taken from oriented core yet incorporated into exploration and mining studies, which may result in severe consequences. Advances in orebody modelling and strategic mine planning. In an everchanging world of uncertain markets, mismatches between demand and reserve base growth, new emerging technologies, and new technical problems and their solutions, this book represents a contribution to both old and new. Geological modelling of mineral deposits for prediction in mining. In the highrisk, highreward mining industry, arguably one of the most risky activities is modelling the geological and mineralogical controls on the occurrence and concentration of the product or products of interest.
Naturally the key to a successful outcome is to specify the interpolation parameters such that the implicit model replicates what would be achieved, albeit in a much greater timeframe, with a manual 2d approach. Modeling bauxite thickness and volumes in arcgis by mike price, entradasan juan, inc. The model include from the basic elements all the way to the virus, human soft tissues and organs. Datamine is committed to providing you with the best service and software solutions in the world. We conduct a detailed geostatistical analysis of existing computerized sample data. Gemecs mining technology mining news and views updated daily. This is a research project and an attempt to model the human body. Geometrical modelling techniques and geostatistical methods are combined to carry out the process of modelling a stratigraphic orebody. Application or computers and operations research 111 the ml11erals industnes, south african institute of mining and metallurgy, 2003. Depressurising an underground ore body at the mcarthur. Geology and economics of strategic and critical minerals. We then composite drill hole samples in intervals of various length, examine histograms and correlation diagrams of composite grades, calculate and model 2d or 3d variograms and perform various types of kriging ordinary. The deposit was then demarcated by industrial indexes and sliced according to the virtual longwall mining procedure.
Ore refers to industrial minerals as well as metals. This publication presents the latest advances, technologies, practices, and concerns in strategic mine planning and orebody modelling. According to statistical analysis of cu grade, inverse distance method was selected for ore reserve estimation of ore body. Thus, the size and grade of an ore deposit changes as the economic conditions change. Dec 15, 2019 ore body modelling and resource estimation are the foundation on which the business case for future mine development and operation is intricately dependent. Reconciliation of geological, mining and mineral processing information is a costly and time demanding procedure with high uncertainty due to incomplete information, especially during the early stages of a project, i. It teaches the basics of constructing a volumetric model, deriving volumes with cutfill, converting raster.
The aim of any mineral resource evaluation process is to determine the location, extent, volume and average grade of that resource by a trade off between maximum confidence in the results and. The main advance of this fetd algorithm is that full transmitting. The datamine studio series covers resource and reserve modelling needs from basic datamine studio 3 manual complex for all deposit styles and commodities. The successful recovery of uranium from an ore body requires a sequence of activities, beginning with the study of the ore body, followed by laboratory scale exploratory studies of the first phases of the process, mainly the leaching operations. Gold and precious metals base metals iron ore coal uranium diamonds industrial minerals bauxite, barite, limestone for cement, salt, sands. Modeling ore body in 3d is the basis of digital intelligent mining. A computer representation of the mining block in the form of an ore model is then built. Moreover, accounting for uncertainty and low geometric quality picking is very difficult in the direct contour approach.
Implicit modelling, using a variety of interpolation algorithms, will generate the required 3d solid with much less input from the user. This study involves the study of ore reserve estimates and the modelling of ore body use of srpac. The underground mining commenced in 1989 and followed a slightly subvertical ore body to the depth of approximately download pdf 1. From a mining point of view, there are two main features of interest in a stratigraphic ore body. Rock and stocks team utilises surpac, minex, datamine and rockworks for the purpose of orebody modelling, estimations and visualisations for clients. Simulation modeling of an iron ore operation to enable. Coal, phosphate and laterites are either thin and variable in thickness. Pdf computer aided ore body modelling and mine valuation. Geostatistical modelling of an orebody as an aid to mine planning. Generally, size of the database is too bulky to manage studies with hand effort. Depressurising an underground ore body at the mcarthur river. The nature of spatial distributions of geological variables such as ore grades is of primary concern when modelling ore bodies and mineral resources. Based on metallogenic concepts and an ore deposit model, 3dgm technology is applied to. Ore liberation modelling by minerals topological evaluation.
As the knowledge of the ore body improves and representative samples become. Understand mine geology and ore body modelling analyse r esourcereserve estimation and statutory requirements. Features a 2in1 hybrid modeling kernel that is capable of modeling any types and shapes of deposits with either explicit inverse distance and kriging or implicit modeling rbf methods. The ore definition is rarely a sharp a computer orebody modelling system geological discontinuity. Gemecs mining technology mining news and views updated. Implicit 3d modeling of ore body from geological boreholes. We have provided modeling and resource estimation solutions to companies involved in the mining of. Practical applications of a computer orebody modelling.
The thickness of the ore body, seams or veins may necessitate a highresolution block model very small or thin blocks to adequately represent the ore body. For this reason geological 3d modeling is very important because it gives detailed information on management in the most optimal way to mine. Download gemecs brochure to read about the companys services in resource modelling, software, data and exploration services. Lack of information at those project stages can be overcome by applying synthetic data for investigating different scenarios. Accurate prediction of the shape, location, size and properties of the solid rock materials to be extracted during mining is essential for reliable technical and financial planning. Minerals free fulltext implicit 3d modeling of ore body. The importance of accurate ore reserve estimates has always been recognized in the past. Simulation techniques are frequently used to solve various problems of operational research for the mining industry and more generally in earth sciences hydrogeology, gravimetry, meteorology, etc.
Here is how to create this plot in leapfrog mining and leapfrog geo. Download limit exceeded you have exceeded your daily download allowance. This is achieved through geological modelling of the threedimensional 3d shape and properties of the materials present in mineral deposits, and the presentation of results in a form which is accessible to mine. Geometrical modelling and graphics display of stratigraphic. Minimise ore loss and dilution in open pit operations with sturio controller. New directions in geology modelling and orebody evaluation.
1326 645 634 1424 1227 209 92 917 202 505 568 445 468 892 346 1184 1592 134 919 347 189 1274 55 618 1164 447 591 189 121 200 1224 36