Over the last 20 years there have been considerable advances in geotechnical techniques used in the design of block caves. This research represents a valuable contribution to block caving geomechanics and is a major step forward in the understanding of complex block caving subsidence phenomena, paving the way to more reliable assessment of caving induced subsidence deformations. A new mesh is recreated at each step to compute the displacement field. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. In addition, femdemdfn modelling is applied to the preliminary analysis of the block caving triggered slope failure at palabora open pit. The geomechanical model affects the following aspects of the design and planning of a block cave mine. Block caving geomechanics s free ebook download as pdf file. Engineering, melbourne, 57 june 1979 block caving geomechanics. Julius kruttschnitt mineral research centre, the university of queensland, 2007. International caving study 19972004 pdf download 1959.
However the body of theoretical and practical knowledge of the factors. Block caving is an underground mining method of great importance to the future extraction of suitable, large, lowgrade deposits due to high production rate potential and low operating cost. The block cave mining mechanism and associated subsidence present one of the most challenging engineering problems in rock mining. Technology as the pathway to increased safety and productivity. This site is like a library, you could find million book here by using search box in the widget. Depending on the mine geometry and geotechnical environment, failure of the surrounding rock mass can result in the release of seismic energy. Javier ubilla graduate student, rensselaer polytechnic institute, usa.
Block caving refers to mass mining methods in which the ore body caves naturally after undercutting and the caved ore is recovered through drawpoints. Block caving is a largescale mining method that is particularly useful for mining lowgrade or disseminated ore bodies which are at too great a depth to be exploited through opencast mining. The use of block caving has increased worldwide and is expected. Block caving is a lowcost underground mining method for undermining.
Geomechanical evaluation of macroblock caving options. Numerous and frequentlyupdated resource results are available from this search. Block caving geomechanics s mining strength of materials free. Although block caving has been in use for many years, there has been limited research on the impact caving angles have on surface settlement and failure profiles, specifically when associated with deep caves and surface propagation i. Investigating block caving geomechanics using seismic. 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 instructors. Printed in australia by university of queensland print on demand centre. The most commonly used cave mining technique is block caving. These methods currently have the lowest operational costs and highest productivity in underground mining 1.
Please click button to get block caving geomechanics book now. Investigating block caving geomechanics using seismic spacetime sequences and virtual reality scientific visualization conference paper pdf available june 2015 with 1,087 reads how we. A product of the international block caving study i 19972001. Download block caving geomechanics erickson motors. Stress intensity factors are computed around fracture tips using a technique that. For the ridgeway deeps project commenced in early 2005 while the prefeasibility and feasibility studies were, secondary crushing and regrind facilities the. Block caving is an underground mining method that enables profitable extraction of massive, lowgrade orebodies, provided orebody geometry, size and competence quality favors caving. Brown date 2007 publisher julius kruttschnitt mineral research centre, the university of queensland pub place indooroopilly, qld edition 2nd ed volume jkmrc monograph series in. An outcome of the international caving study now renamed mass mining technology and run through the sustainable minerals institute of the university of queensland carried. Villegas vcpcodelco, national copper corporation of.
Ebook block caving geomechanics as pdf download portable. These include block caving, panel caving and its variations. An outcome of the international caving study now renamed mass mining technology and run through the sustainable minerals institute of the university of queensland carried out in the period 19972004 by the julius kruttschnitt mineral research centre, the university of queensland, brisbane, australia, and the itasca consulting group, inc. Block caving geomechanics top results of your surfing block caving geomechanics start download portable document format pdf and ebooks electronic books free online rating news 20162017 is books that can provide inspiration, insight, knowledge to the reader. Ted also contributed greatly to the furthering of knowledge in both the industry and academic circles by sitting on numerous organising committees and editorial boards for a wide range of conferences, symposia, and journals. A finite element based approach is used, in which fractures are represented as nonplanar 3d surfaces that grow in response to boundary stresses and interaction. However, despite these advances the successful development of a block caving project relies heavily on many non geotechnical factors such as commodity price, exchange rate and development exploration timing. All books are in clear copy here, and all files are secure so dont worry about it. Figure 1 range of block caving block heights after flores et al. Geomechanical evaluation of caving macroblock options at chuquicamata underground project in chile using threedimensional numerical modelling e. Geotechnical analysis of gravity flow during block caving ramon verdugo professor of geotechnical engineer ing, university of chile, chile. Block caving geomechanics university of queensland.
Caving is a mining method which is of growing interest to companies concerned with the exploitation of massive ore deposits, because of its low cost. Jkmrc monograph series in mining and mineral processing 3. Australian centre for geomechanics recommended for. Draw point sequence will be affected by the structural. T brown, 2003, julius kruttschnitt mineral research centre, the university of queensland edition, in english. Geomechanical evaluation of caving macroblock options at. Microseismic analysis to identify the caving front. The mining project contemplates using the method of block caving with macro blocks caving option to mine out copper ore 1,2,3,4. In order to assess the geomechanical hazards, numerical models and. Atlas copco block caving mining method black diamond drilling services australia pty ltd.
Caving geomechanics 377 figure 7 layout of choke mass blast caving m e t h o d 14. A study of isolated draw zones in block caving mines by. How much is the download block of the exact reforms of the section. It is important that research outcomes be disseminated in a useful form to the clients of the research, and to the community at large if appropriate. Block caving is an underground mining method that enables the profitable extraction of massive lowgrade with knowledge of mine geometry excavation sequence newcrest ridgeway deeps. Cave initiationg by undercutting block caving geomechanics.
Download caving 2010, second international symposium on blck and sublevel caving. Determination of optimum drawpoint layout in block caving. Some remaining challenges in the four theme areas discussed are also identified. Block caving geomechanics 2003 edition open library. Description download block caving geomechanics s free in pdf format. The growth of fractures around an undercut of a block cave is simulated. Pdf investigating block caving geomechanics using seismic. Julius kruttschnitt mineral research centre massmin 2004 2004. Modelling of primary fragmentation in block caving mines. Block caving geomechanics isbn 1741120004 l caving mining. Cavingisthelowestcost underground mining method provided thatthe drawpoint sizeandhandling facilities are tailored tosuitthecavedmaterial andthatthe extraction horizon canbemaintained forthelife ofthedraw. Compared with geomechanical methods, the microseismic system reliably tracked the position of the caving front during ore. Caving underground mining methods longwall, sublevel. Six different caving options have been considered in the study.
The australian centre for geomechanics looks forward to hosting the fourth international symposium on block and sublevel caving in. Thedailyproduction fromcavemining operations throughout theworldisapproximately. Block cavinginduced strata movement and associated. The use of the block cave mining method is increasing in popularity as it is the lowest cost underground mining method and it enables large production rates. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Scribd is the worlds largest social reading and publishing site. Nowadays, block caving is the underground mining method with the highest. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Microseismic analysis to identify the caving front associated with cave mining operations in new south wales a microseismic system was implemented at a block caving operation at ridgeway gold mine in eastern australia. First international seminar on deep and high stress mining, perth, australian centre for geomechanics. Blockcaving method is employed generally for steeply dipping ores, and thick sub horizontal seams of ore.
Abstract block caving is a mining operation method where taking advantage of the gravity forces, the ore is fragmented. Block caving success relies on cave propagation, which is governed by the caving geomechanics operating at a location in space and time. The geomechanics challenges of contemporary deep mining. Block caving refers to mass mining methods in which the ore body caves naturally after.
The method has application, for ex ample in sulfide deposits. Underground mining modifies the in situ stressfield and results in stress redistribution around the excavations. Ridgeway deeps mine block caving pdf, block caving and primary crushing, crushing plant. Julius kruttschnitt mineral research centre, the university of queensland, 2002 caving mining 515 pages. Jkmrc monograph series in mining and mineral processing, no. Block caving is an underground mining method that enables profitable extraction of massive, lowgrade orebodies, provided orebody geometry. Julius kruttschnitt mineral research centre isles road, indooroopilly, queensland 4068, australia.
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