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optimum design of open pit mines lerchs grossman haiti

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It was 1964 when Helmut Lerchs and Ingo F Grossmann presented their algorithm to find the optimum design for an open pit mine In their words at the time “the objective is to design the contour of a pit so as to maximize the difference between total mine ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.


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  • PDF Optimum design of open pit mines ResearchGate

    Optimum design of open pit mines Article PDF Available in Bulletin of the Australian Mathematical Society 4302349 350 · April 1991 with 5189 Reads How we measure reads

  • Application of LerchsGrossman Pit Optimization to the

    The application of the three dimensional LerchsGrossmann pit optimization procedure to this task is described for a range of gold deposits A new approach to the modelling and manipulation of the geological model enables complex geological environments to be

  • Lerchs H and Grossman F 1965 Optimum Design of Open

    Lerchs H and Grossman F 1965 Optimum Design of OpenPit Mines Transaction CIM 58 4754

  • Optimum Design of OpenPit Mines CIM Store

    Optimum Design of OpenPit Mines CIM Bulletin 1965 Helmut Lerchs Manager of Scientific Services Montreal Datacentre International Business Machines Co Ltd lngo F Grossmann Manager Management Science Applications International Business Machines Co Ltd

  • CiteSeerX Citation Query Optimum design of open pit

    For the maximum flow problem there are a number of very efficient algorithms that have been developed over the last decade On the other hand the algorithm that is most commonly used by the mining industry has been devised by Lerchs and Grossmann LG LG64 This algorithm is used in most commercial software packages for openpit mining

  • Optimum design of open pit mines espace Home

    A fundamental problem in open pit mine planning is that of determining the optimum ultimate pit limits of the mine These limits are that pit contour which is the result of extracting a volume of material which maximizes the difference between the value of extracted ore and the total extraction cost of ore and waste whilst satisfying certain practical operational requirements such as safe

  • Lerchs–Grossmann algorithm with variable slope angles

    The design of an optimum openpit requires an estimate of a set of average and safe slope angles Pit slope angles may vary throughout a deposit to accommodate varying rock characteristics and ore

  • Application of LerchsGrossman Pit Optimization to the

    Definition of the optimum open pit whether an intermediate phase or final design will be sensitive to many factors The most basic will include geological and mining constraints mining and processing costs pit slopes and product prices The application of the three dimensional LerchsGrossmann pit optimization procedure to this task is described for a range

  • Lerchs H and Grossman F 1965 Optimum Design of Open

    Lerchs H and Grossman F 1965 Optimum Design of OpenPit Mines Transaction CIM 58 4754

  • Optimum design of open pit mines espace Home

    A fundamental problem in open pit mine planning is that of determining the optimum ultimate pit limits of the mine These limits are that pit contour which is the result of extracting a volume of material which maximizes the difference between the value of extracted ore and the total extraction cost of ore and waste whilst satisfying certain practical operational requirements such as safe

  • Lerchs Grossman Free Download PDF Ebook

    Optimum Design of OpenPit Mines Joint CORS ond ORSA Conference Montreal Moy 2729 1964 Tronsoct ions C l M Vo l ume LXV I I I 1965 pp 1724 ABSTRACT An openpit mining operation can be vieed ª a process by which the 01en surface of a mme is contmu ously deformed

  • lerchgrossman open pit scheduling

    SURFACE MINE PRODUCTION Helmut Lerchs and Ingo presented their algorithm to find the optimum design for an open pit scheduling More lerch grossman open pit scheduling 30728 Open Pit Mining Lynx Geosystems Inc lerch grossman open pit scheduling 30728 Lynx Case Study Mining Improved Confidence in an Open Pit Study Introduction In

  • A new algorithm for optimum open pit design Floating

    Journal of Mining Environment Vol2 No2 2011 118125 A new algorithm for optimum open pit design Floating cone method III E Elahi zeyni1 R Kakaie2 A Yousefi3 1 Eastern Alborz Coal Company Shahrood 2 Faculty of Mining Engineering Geophysics ShahroodUniversity of Technology Shahrood 1 Eastern Alborz Coal Company Shahrood

  • Open Pit Optimisation and Design A Stepwise Approach

    imported into Whittle for the open pit optimisation based on geotechnical and economic parameters derived from calculations or assembled from mines operating in Ghana The optimal pit is then imported back to Surpac for detailed pit design incorporating a ramp and berms The designed pit contains 503 Mt of ore at an average grade of 17063 gt

  • Determination of the Optimum Cutoff Grade

    open pit design Ideally the criterion should be the maximization of the NPV of the pit but Lerchs Grossman 1965 Zhao Kim 1992 or a network flow one In this section we follow an example to show the effect of rehabilitation cost on the optimum cutoff grade In an open pit mine there is 1000 tons of material within the pit

  • Optimized open pit mine design pushbacks and the

    OPTIMIZED OPEN PIT MINE DESIGN PUSHBACKS AND THE GAP PROBLEMA REVIEW 511 JOURNAL OF MINING SCIENCE Vol 50 No 3 2014 Fig 3 Graph G with dummy node x0 and arcs added from the dummy node x0 to all other nodes It is clear from the definition of our graph G that a graph closure in G represents a physically feasible pit if not then a block not in our closure violating

  • A New Algorithm For Open Pit Mine Production Planning

    In these methods it is known which block is excavated when therefore it is possible to assign economical values to the blocks considering time factor In this doctoral research previous researches tries to optimize long term production planning in open pit mines are examined and an alternative algorithm for open pit mine planning is developed

  • An application of discrete mathematics in the design of an

    161 RH Robinson Programmming the LerchsGrossman algorithm for open pit design iii Proceedings 13th APCOM Symposium of the Society of Mining Engineers AIME New York 1975 BIV 1BIV 17 171 EA Rychkun and T Chen Openpit mine feasibility method and application at Placer Development in A Weiss ed Computer Methods for the 80s

  • Optimum design of open pit mines CORE

    Abstract A fundamental problem in open pit mine planning is that of determining the optimum ultimate pit limits of the mine These limits are that pit contour which is the result of extracting a volume of material which maximizes the difference between the value of extracted ore and the total extraction cost of ore and waste whilst satisfying certain practical operational requirements such

  • The formula at the heart and mind of mine plan

    Mar 18 2019 · Lerchs H Grossman I 1965 Optimum Design of OpenPit Mines Transactions of the CIM LXVIII 4754 I put these in quotation marks as these terms are not technically correct and are the source of some confusion with practitioners We will discuss this later Optimising a combined open pit and underground strategic plan 2008 This

  • PDF AN ANOTHER WAY FOR OPEN PIT MINE DESIGN

    Authors of the work presents main principles of a new method of design the ultimate pit which is primarily applicable for bedded formations but also can be acceptable for other types of deposits On the basis of main criteria of optimum design profitability and slope stability the authors have tested theirs procedure and proposed a new method for optimum design of open pit mines for which

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