The blast duration time between the detonation of the first and last hole in the pattern of 885 ms is indicated, together with the anticipated arrival period of the p, s and r waves. When an explosive charge is detonated, chemical reaction occur which, very rapidly changes the solid or liquid explosive mass. 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. Graph g with dummy node x0 and arcs added from the dummy node x0 to all other nodes. Optimization of blasting design parameters on open pit.
Evaluation and optimization of blasting approaches to. Drilling, blasting, open pit, fragmentation, kuzram model, modified kuzram. Assists drill and blast engineers, students of mining, civil engineers or engineers not directly involved in blasting practice. Guidelines for open pit slope design is a comprehensive account of the open pit slope design process. It presents a practical approach to the design and assessment of blasts, and demonstrates how blasting operations can be engineered not only to solve classic blasting. Mechanism of rock breakage while release of explosives energy upon detonation and other relevant points are discussed below. Blast designer software blades calculates blast plan parameters, explosives charge distribution, initiation timing and sequence, results in terms of rock breakage and fragment size distribution. A systemwide approach to minimize the operational cost of bench. Image analysis software used to measure rom blast fragmentation results show the high pf blasts produced the lowest blast p80 mm. Openpit mine planning and design presented by the department of mining engineering, university of pretoria course content the value chain incorporated into the course consists of. Optimisation of drill and blast parameters using empirical fragmentation modelling.
Click download or read online button to get surface blast design book now. Nchanga open pits nop ore bench to optimize the blasting design parameters that. Datamine provides a full range of open pit planning applications from strategic long term optimisation, pit design and reserve generation through to short term material destination and operational equipment scheduling. In order to implement an adaptive blast design strategy for open pit mines, two problems must first be solved. These problems give rise to mixed discrete optimization models that in reallife settings are large scale and computationally challenging.
Geological resource, drill samples, ore body models and block modelling pit optimisation physical pit design equipment optimisation and requirements. The burden was held constant at 10 feet throughout the analysis, therefore, changes in. Blastlogic enables improved design compliance monitoring and downstream. They have also recently published another book entitled open pit blast design. Edited by andrew scott this book addresses the challenge of optimising the design of blasts for open pit mines and quarries. Drill and blast designs are crucial for downstream mining success.
Prenn synopsis the model described is a design and economic planning tool for analyzing surface mineral deposhs. 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 processes that should be followed and the tools that are. While previous research has focused on optimizing these operations as two separate parts or merely in a specific parameter, this paper proposes a system dynamic model sdm for drilling and blasting operations as an interactive system. This gives management an insight into the blast performance and is the first step towards optimisation. Explog jasey caruana blasting largo resources vale kinross mota engil carlson software. The information vital to optimizing blast design in. Blastiq eliminates excess drilling and explosives consumption through design optimisation an innovation built for efficiency and cost reduction. Blast design flyer pdf 1mb this link will open in a new window optimised blast design flyer better quality blast outcomes and reduced costs with optimised blast designs. The primary objectives in rock blasting are to optimize blast performance and ensure the safety of. Pit design overall slope of a pit depends on several factors of the pit slope. The proposed system is compatible with traditional approaches to economic analysis in open pit planning, and with emerging best practices to manage technical and economic uncertainty, improve project optimization, and develop robust mine plans. Pdf optimization of blasting parameters a case study of nchanga.
This site is like a library, use search box in the widget to get ebook that you want. Surface blast design download ebook pdf, epub, tuebl, mobi. Generates blast plan and according to the delay pattern structure, simulation. Mathematical optimization models and methods for openpit.
Mining companies recognise the need to improve analysis of site data, select. Keen geoscientists from across australia had much to explore during the annual. Optimisation of blasting in a large open pit mine ausimm. The blasthole diameter has significant effect on rock fragmentation, since it is the primary blast design parameter and has influence on the choice of burden, spacing, stemming length, etc. Knowing how to layout and load blast holes, run blast reports, edit holes, and adjust explosive tieins will help you create effective designs and increase blast accuracy and blast safety. Blast optimisation was therefore carried out using the kuzram model. Assists drill and blast engineers, students of mining, civil engineers.
Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Technologies for optimizing drilling and blasting in openpit mines. Numerous and frequentlyupdated resource results are available from this search. Blast design software opitblast ask us for a free trial. Rock blasting and control overbreak fhwa us department of. In hard rock mining, blasting is the most productive excavation. Technologies for optimizing drilling and blasting in open. Blast optimisation of hard ores in the phu kham openpit. Mineralization, topography, costs and significant goologic feature. The vibrations, due to reflections and refractions of the waves, so much in evidence in the first. 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. In this paper, the results of blast optimization studies for rock units of celestite open pit mine located in sivasula region have been presented and discussed. Parameters considered in open pit bench blast design modified after anon, 2012, t, u, s h, l, d, b t.
Datablast is a multiuser system covering the entire open pit drill and blast process from design to infield operations. The differences in the figures are due to the widening of the pit bottom and the creation of a ramp and berms in the designed pit, which resulted in the addition of some waste, ore loss and dilution. Optimization of blasting parameters in opencast mines. Optimized design of drilling and blasting operations in.
Open pit blast design analysis and optimisation edited by andrew scott, julius kruttschnitt of the mineral research centre. This integration ensures robust strategic plans are executed reliably on the ground. This paper demonstrates the application of surpac and whittle in open pit optimisation and design. Managing ore loss and dilution for blast optimisation during a. Optimization of blasting design parameters on open pit bench a. Slope stability analysis and open pit stabilisation measures seismic characterisation and behaviour blast monitoring and design design of slope stability monitoring systems training of mine personnel in aspects relating to slope engineering slrs service offering provides for. This book addresses the challenge of optimising the design of blasts for open pit mines and quarries. The research was carried out as a practical method on nchanga. Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel.
Then set up a personal list of libraries from your profile page by clicking on your user name at the top right of any screen. Optimized open pit mine design, pushbacks and the gap. When an explosive charge is detonated, chemical reaction occur which, very rapidly changes the solid or liquid explosive. Addresses the challenge of optimizing the design of blasts for open pit mines and quarries. Pdf optimisation of drill and blast parameters using. At present, drilling equipment with 200mm hole diameter and above is widely used in large open pit mine.
Mineral comminution circuits, minerals engineering 10. Optimization of blasting design parameters on open pit bench a case study of nchanga open pits victor mwango bowa abstract. Type book authors andrew scott, julius kruttschnitt mineral research centre date 2009 publisher julius kruttschnitt mineral research centre pub place indooroopilly, qld edition reprint with minor alterations. In this thesis, we study the open pit design problem, the open pit mining scheduling problem, and the open pit design problem with geological and price uncertainty. As an example, smaller drilling patterns were simulated 10 m x 10 m to 8 m x 8 m, and 8 m x 8 m to 7 m x 7 m in pit 5 and pit 6 respectively in combination with changes in explosives p700 emulsion vs. Case of metlaoui mining basin, southwestern tunisia monia aloui 1, yannick bleuzen 2, elhoucine essefi3 and chedly abbes 1faculty of sciences of sfax, road soukra, sfax 3038, tunisia. The comminution process at an open pit operation starts with the drilling of blast holes and ends after the material has gone through the fine grind circuit. Identify trends and improve blasting performance over time.
Its often the case where operators skimp on the blast design. The particle size distribution is a function of the blast design and the specific explosive charge of each hole ouchterlony et al. Blast design software blasting pattern software blast. Optimisation, mining, stripping ratio, block model, pit design 1 introduction. Optimized design of drilling and blasting operations in open pit. Exploration data on the tabakoto deposit of anglogold ashanti sadiola mine aasm has established. Optimization of drilling and blasting operations in an open pit mine. The analysis will be carried out using complexity analysis tools, a modelfree.
Pdf optimisation of drill and blast parameters using empirical. Check in real time your blast progress, control the actual charge per hole, holes length, stemming height and your blast s main kpis. In order to set up a list of libraries that you have access to, you must first login or sign up. Analysis and optimisation which is available at the same list price. Bowa introduced a practical method in an open pit mine to optimize blasting design. Pdf in hard rock mining, blasting is the most productive excavation technique. Control your blast operation on your ios and android device with the latest blast design and optimization platform opitblast. Open pits nop ore bench to optimize the blasting design parameters that can yield the required.
Application of surpac and whittle software in open pit. Pre blast survey face points, crest, toe, top of coal and drill surface points were imported to the software. Guidelines for open pit slope design by read, john ebook. Ground vibrations and air blast effects induced by blasting in open pit mines. Electronically transfer data, respond to changes in realtime, and generate reconciliation reports. Adaptive blast design means that the blast design can be modified in real time, by changing hole pat terns or the type and amount of explosive, based on newly acquired information about the rock mass. Operators usually break the process into several separate operations and do their cost analysis based on this approach. Blast optimisation of hard ores in the phu kham open pit presenter. Napiermunn julius kruttschnitt mineral research centre indooroopilly, qld 1996.
1222 1615 290 1187 222 833 1550 349 1394 1564 1622 538 1593 586 865 137 910 960 527 619 739 218 930 51 1201 1624 896 189 1125 973 1250 1033 1019 77 1428 1421 861 574 795 980 1202