Open pit slope depressurization using horizontal drains. Minimum mining width pit bottom, bench ends, stage. As will be seen in the following summary, all of these advantages are interrelated. However, the impacts to regional groundwater levels have been minimal, with typically less than a 20 meter fall in. Slope design and implementation in open pit mines sciencedirect. Open pit, open cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow this form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining. Open pit mining is an operation in which blocks from the ground are dug to extract the ore contained in them, and in this process a deeper and deeper pit is formed until the mining operation ends.
In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal. Graph g with dummy node x0 and arcs added from the dummy node x0 to all other nodes. As geotechnical data is accumulated so the risk of unforeseen conditions reduces, and so. Mining engineer open cast mine planning factors that influence planning. Pdf lecture 4 open pit mining presentation abdelaziz. Guidelines for open pit slope design, john read, peter. The exploration data, assembled from 1997 to 2003, revealed a potential gold resource and indicated that the deposit could be mined by using open pit mining method.
This is a key element in open pit mine planning and design. The course is comprehensive and is based on both the undergraduate and postgraduate surface mine design. 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 the slope. The mining rate is greater than 20,000 tonnes per day tpd but is usually much greater. In addition, the work can be used as a practical reference by professionals.
Some pits operate at a rate of more than 100,000 tpd. Design of surface mine haulage roads a manual by walter w. Created as an outcome of the large open pit lop project, an international research and technology transfer project on the stability of rock slopes in open pit mines, this book provides an uptodate compendium of knowledge of the slope design processes that should be followed and the tools. Informative presentation you came across to know about open pit mining. The fimiston open pit, known as the super pit, located in kalgoorlie in western australia. This material is intended for use in lectures, presentations and as handouts to students, and is provided in power point format so as to allow customization for the individual needs of course. The unique waste handling needs, including tailings disposal, of contemporary oil sands mining. Pdf available in bulletin of the australian mathematical society 4302. Strength of the hanging wall, footwall, and ore body.
Some technical aspects of open pit mine dewatering by v. Determination of optimum bench height is a major concern in most open pit mines. Pdf geotechnical applications in open pit mining necmi. Open pit mining mining methods 5 open pit mines are used to exploit low grade, shallow ore bodies. Outstanding textbook designed for courses in surface mine design, open pit design, geological excavation engineering and in advanced open pit mine planning and design. Optimized open pit mine design, pushbacks and the gap. Yamatomi encyclopedia of life support systems eolss 2. These images are from the largest open pit gold mine in australia. In a hard rock mine, the bottom of the pit would be the lowest level elevation that mining would be conducted on the ore being mined.
The erstwhile nkroful mining limited nml had a concession with an approximate area of 47. Open pit mining systems giant bucket wheel excavators bucket wheel excavators spreaders beltwagons tripper cars overland and curved conveyor systems stationary, relocatable and shiftable belt conveyor systems auxiliary equipment transport crawlers in pit crushing and conveying systems for ore, overburden, coal fully mobile in pit crushing plants. These limits are that pit contour which is the result of extracting a volume of. Efficient use of employee resources the userfriendly interface and simplified menus require minimal training. Ghgt9 slope design and implementation in open pit mines. This unique course enables you to learn the basic theory of open pit mine design and the application thereof, whilst having the chance to interact with experts in the field. Openpit mine planning and design enterprises university of. Open cast mineral resources are quoted as insitu tonnages and mineral reserves are tonnages falling within an economic pit shell. Guidelines and considerations for open pit design deswik.
A read is counted each time someone views a publication summary. Open pit mining mining methods hydraulic gassification opencast mining open cut mining surface or strip mining final pit. Selection of practical bench height in open pit mining. Most of the mining activity is concentrated on open pit. The evaluation method is generally ordinary kriging with mining block sizes ranging from 10 x 10m to 100 x 100m to 250 x 250m in the plan view.
Surface mining planning and design of open pit mining presentation pdf available march 2010 with 18,876 reads how we measure reads. Ortiz synopsis this work evaluates and characterizes the impact of the support size and mining dilution of a block model in the operation and selection of equipment at an open pit mine. How to create simple open pit design automatically using global mapper and how it seems on arcscene. Open pit design, production scheduling and plant sizing and.
Guidelines for open pit slope design mining engineers world. Open pit mine planning and design3rd edition pdf do livro. Mineralization, topography, costs and significant goologic feature. This paper demonstrates a stepwise approach to design an. Block size selection and its impact on openpit design and. Open pit mine planning considering geomechanical fundamentals. Open pit mining, bench height, multicriteria decision making. Geotechnical considerations in open pit mines version 1. Micromine 2016 scheduler is an attribute driven tool that uses 3d solid wireframes to create mining tasks for open pit mine planning and design. Before creating a scheduling project, an engineer must prepare their data so that it can be used for mine scheduling.
Open pit scheduling module in the world of open pit mining, schedules can make the difference between profit and loss. Regional demand 2 distribution of coal deposits 3 quality of coal 4 pricing policy for coal 5 available infrastructures. Prenn synopsis the model described is a design and economic planning tool for analyzing surface mineral deposhs. Unesco eolss sample chapters civil engineering vol. Surface mining planning and design of open pit mining. This bureau of mines manual for design of surface mine haulage roads covers such aspects of haulage road design as road alignment both vertical and horizontal, construction materials, cross slope, and drainage provisions.
Introduction as a definition in open pit mining, bench height is the vertical distance between crest and toe of the bench fourie and dohm, 1992. Okubo encyclopedia of life support systems eolss figure 2. The stepbystep introduction to mine design and planning enables a fastpath. Guidelines for open pit slope design is a comprehensive account of the open pit slope design process.
Surface mining planning and design of open pit mining 1. Mathematical optimization models and methods for openpit. Grope is a total systems model for planning and evaluating open pit ventures. Economy the economic advantage of open pit mines is due primarily to their high level of productivity.
The stepbystep introduction to mine design and planning enables a fastpath approach to the matter by undergraduate and graduate students. Detailed geotechnical data is often a major unknown factor in open pit design and mining, the lack of which constitutes a significant risk in any mining venture. Created as an outcome of the large open pit lop project, an international research and technology transfer project on rock slope stability in open pit mines, this book provides an uptodate compendium of knowledge of the slope design. An open pit design model the model described is a design and economic planning tool for analyzing surface mineral deposhs. Change in production and productivity of us coal mines the higher productivity for open pit mining equipment also lowers costs. Mining is often a highly complex industrial operation, with respect. Open pit mine planning and design is an excellent textbook for courses in surface mine design, open pit design, geological and excavation engineering, and in advanced open pit mine planning and design. Open pit mine planning and design, third edition mining. Open pit mining, mineral processing, materials handling.
323 1046 239 673 1214 644 856 1436 1096 89 489 869 463 734 1351 50 361 1465 273 650 926 1456 35 431 751 1327 1191 798 734 928 1490 1225 759 1050 843 806 1296 65 649 1419 655 752