Metodo block caving pdf

Experimental tests secondary fragmentation model hang up. Design an appropriate mining method for extraction of ore. Mining massive deposits for such deposits is called panelblock caving. Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping ore bodies located at depth. Villegas vcpcodelco, national copper corporation of. Pdf assessment of ventilation circuit for block caving. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. Pdf the current high production at block cave mines use significant numbers of diesel equipment. Tamano alto, ancho o espesor forma tabular, lenticular, masivo, irregular disposicion inclinado, manteo. By monitoring the flow of material in realtime we can potentially minimise the dilution in recovering ore from the. It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine. Reliability center mine planning model for caving operations.

Block caving this presentation summarizes a talk given during the inaugural workshop of the cave mining forum. Regarding the technology and this latest block caving partnership, van as said the real value is in preserving the security and integrity of the resource. Whilst block caving methods have been around since the 19th century, the technique has been coming along in leaps and bounds, particularly in south america, with van as stating that the chileans have been doing it for much longer than we have in australia, most of codelcos copper mines are block caving operations, and one of the worlds. Geomechanical evaluation of caving macroblock options at. Njamba mike njamba, victor mutambo university of zambia, school of mines, department of mining engineering, lusaka, zambia.

Apr 21, 20 a new mine planning tool for sub level caving mines gemcom. In contrast, speleology is the scientific study of caves and the cave environment. Underground mining methods and applications production headframe hans hamrin 1. Design an appropriate mining method for extraction of ore between 330ml and 400ml at baluba east upper tblock.

Geomechanical evaluation of caving macro block options at chuquicamata underground project in chile using threedimensional numerical modelling e. Abstract baluba mine was commissioned in 1973 and since then over 55 million tonnes of ore has been mined. This is essentially the integration of underground mine production scheduling and monitoring with surface mineral processing management based upon fragment size and geometallurgical ore characteristics. Blockpanel cave mining system often lacks of a comprehensive geotechnical model due to the limited access to the rock mass given the reduced amount of drifting that is performed as part of the mining method. The block caving is generally used in low resistance of rocks, but the developments and openings production drawpoints, etc. However, it is only suitable for ore bodies with large horizontal and vertical extents. Block caving geomechanics university of queensland. Brown date 2007 publisher julius kruttschnitt mineral research centre, the. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. In any discussion of methods of underground mining comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions.

Theability todefine cavability andfragmentation, theavailability qflarge,robust loadhauldump units, abetterunderstanding qfdrawcontrol requirements, improved drillingequipmentfor secondary blasting, and reliablecostdatahave shown thatcompetent orebodies withcoarse. The article is a summary of the preliminary results of the investigation, related to the flow ability of the granular material under confinement test. These ore bodies are generally low grade in nature and are too deep to be extracted through open pit mining. Reliability center mine planning model for caving operations enrique rubio university of chile. Block caving is a gravitybased underground mining method that involves breaking up the rock mass located at depth into pieces. Block cave mining techniques the most commonly used cave mining technique is block caving.

Pdf assessment of ventilation circuit for block caving production. The development of coal mining from ancient times to today has experienced the artificial stage, the mechanized mining stage, and the automated mining stage. Geomechanical evaluation of caving macroblock options at chuquicamata underground project in chile using threedimensional numerical modelling e. Block caving process block caving initially involves an elaborate preconstruction process. Sublevel caving past and future australian centre for. The plan and section views of above mining method are shown in figure 4. Experimental tests secondary fragmentation model hang up predriction aplication to block caving mining. Block caving is an extreme case of sublevel caving in which instead of a back of ore 5 to 10 ft. After the bottom of the block, or panel, is cut up into pillars by drifts and cross drifts, the pillars are robbed, and then the remaining stumps are. Oct 26, 2012 20 greatest video of ships crashing and beaching around the world, its crazy duration. 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.

Assessment of ventilation circuit for block caving production level drifts conference paper pdf available june 2015 with 736 reads how we measure reads. 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. This method is particularly suitable for lowgrade minerals or with disseminated mineralization. The most commonly used cave mining technique is block caving. 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 same format as the revised manual has been used so that the details of the subject can. A switch from open pit mining to block caving mining could. Design an appropriate mining method for extraction of ore between 330ml and 400ml at baluba east upper t block. In underground mining, block caving is the only method with the costs comparable to surface mining methods, especially open pit mining. A refinement of the traditional minetomill integration opportunity for copper block cave mines, referred to as cavetomill, will be presented.