The use of explosives, to break and fragment rock, is the fastest and efficient procedure to make it transportable has become a worldwide used technique. Rock fragmentation depends upon two groups of variables. Shotplus blast design and modelling software for surface. Measurement of size distribution of blasted rock using. The contributions cover all major recent advancements in blasting and fragmentation, from realistic treatment of the target rock. Rock fragmentation is a complex dynamic process relating to the interaction between rock mass and explosives. The economic analysis of the use of explosives is an important part of blasting operations in mining and construction. Our shotplus range of blast design and modelling software enable users to design. Blast design software blasting pattern software for mining. With blastiq i can see things like fragmentation size, how the shots coming up so we can tweak the patterns to try and keep a. Wipwares innovative image, conveyor and vehicle material analysis software monitors particle sizes in the field and laboratory helping you make quantitative decisions, increase productivity, reduce downtime and lower operating costs. Rioblast is a blast design and simulation software package, developed by maxam for drilling and blasting engineers and artillery experts. Having the capacity to determine the expected rock size after blasting based on design parameters provides a strong basis for future designs. Maxam foundation maxam chair blasting solutions design and simulation of blasts rioblast.
Fragmentation analysis performed on a rock pile using wipfrag. Evidences of the influence of the detonation sequence in. Importation of real data and rock factor determination. Soft blast is the australasian distributor of splitdesktop software for fragmentation size determination. Proceedings of the 9th international symposium on rock fragmentation by blasting. Softblast is the australasian distributor of splitdesktop software for fragmentation size determination. For the most versatile and powerful blasting design solution. Over blasting results in excessive energy consumption and high explosives expenses, while under blasting produces large rocks that overwork downstream equipment and shorten their lifespan. Market leading automated triggering is used to efficiently capture images of material travelling along a conveyor belt. An optimal blast not only results in proper fragmentation but also reduces undesirable effects like ground vibration, fly rock and formation of toe in opencast benches.
A new framework for evaluation of rock fragmentation in. In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization of drilling and blasting parameters. Software solution for better rock drilling blasting design, planning and analysis. Mar 12, 2019 opitblast is windows blast design software to plan, share and control all the blast operations and their results. Opitblast is windows blast design software to plan, share and control all the blast operations and their results. Fragmentation principles evaluation of fragmentation factors controlling fragment size. Fragmentation energy in rock blasting pdf free download. Aug 24, 2017 one of the inseparable parts of mining activities is blasting which one of its important outcomes is fragmentation. Rock drilling blasting design, planning and analysis.
A practical method of bench blasting design for desired fragmentation based on digital image processing technique and kuzram model. Is there a analysis s software of blasted rocks fragmentation, that. A versatile fragmentation analysis software wipfrag can be used right at your fingertips. Is there any software for designing blasting pattern in. Is there any software for designing blasting pattern in tunnel. With an effective particle size analysis solution in place, mines can optimize blasting results and realized significant time and cost savings. Drilling and blasting are fundamental operations in the mining cycle and consti tute an important component of the mining costs. Rock fragmentation by blasting orica mining services. Highenergy explosives enhance fragmentation, which ultimately produces a positive effect on production. The fragment size analyses were carried out using wipfrag software.
Explosives are energy, and the efficient use of this energy is a major factor in keeping rock blasting costs under control. Iblast is blasting simulation engineering software to help optimise results without delaying the blasting process. The contributions cover all major recent advancements. By optimising rock fragmentation by blasting, you can achieve significant improvements in waste productivity, mill throughput, fragmentation profile and wall stability. This thesis tests whether or not short holetohole delay times improve rock fragmentation in full scale bench blasting. Fragmentation is the ultimate measure of efficiency of any production blasting operations. Rock fragmentation control in opencast blasting sciencedirect. The most common software packages for this method are goldsize. Optimization of blast fragmentation and muck profile. Blasting pattern software, our blast specialists are expert in blast design software. Site of study is a limestone quarry producing limestone for cement manufacturing.
Rock fragmentation by blasting, lulea, 1, 26597 cunningham 1987, fragmentation estimations and the kuzram modelfour years on, trans. If you want to go through some math, there are several models to predict fragmentation. Split engineering provides measurements to manage fragmentation from blast to mill to improve mine profits. The mean fragment size of rock should not too high or too low. Outputs of the split desktop software were obtained in tabular form as. Rock fragmentation by blasting contains the papers presented at the 10th international symposium on rock fragmentation by blasting new delhi, india, 2629 november 2012, and represents the most advanced forum on blasting science and technology. Soft blast and its agents can also provide technical support and training. One of the major concerns related to blasting operation in mining and civil engineering projects is rock fragmentation. A new framework for evaluation of rock fragmentation in open. Wipware fragmentation analysis software and hardware. Fragmentation control optimising fragmentation for. The technology exists to reduce analysis time and build sufficient models to accurately predict rock fragmentation. Objectives at the end of this chapter, participants will be able to achieve. Put fragmentation at your fingertips on your windows computer, tablet, android or ios device with wipfrag.
Blasting is the pillar of open pit mining and is directly influenced by many factors, both in design and terrain, and can influence much of the ultimate mine design and cost realization. Split engineering is the leader in providing coarse rock size measurement systems and software for every stage in the comminution process. The output of the analyses are in the form of number of exposed fragmented blocks, maximum. With the objective to design, concept, iblast advanced delivers optimized initiation sequence for electronic delayed detonators based on required objectives fragmentation, vibration. Wipfrag wipware fragmentation analysis software and. A new framework for evaluation of rock fragmentation in open pit. Technical decisions, blasting costs, operational efficiency and productivity, and equipment performance can all be related to optimum rock fragmentation. A specialized software package split desktop was used to estimate the actual mean fragmentation by analyzing scaled images from the post blast muck pile. But this simple statement underestimates how important this activity is for the whole mining operation. For this reason, a mature model has not yet been developed to meet all mining conditions and geological features siddiqui et al. Planned fragmentation is affected by blasthole burden, spacing, explosive strength, geologic factors and blasthole diameter. Softblast and its agents can also provide technical support and training. In order to overcome this drawback, the main goal of this paper is to provide a new framework to evaluate and predict rock fragmentation based on the.
Subscribe now submit a paper paper formatting instructions pdf. Blast monitoring and fragmentation analysis rocketmine. The following buttons are for information about delpat. In this paper, fragmentation of the rock after blasting is estimated analytically by the use of neural network method. Based on desired blasting inputs such as face coordinates, hole diameter, pattern layout, rock characteristics, explosives, fragmentation size etc. This is because oversize rock and very fines rock will occur. Many variables such as blasting geometrical parameters, rock properties, explosive specification and insitu geology influence rock fragmentation. Blasting fragmentation prediction and optimization. It is difficult to give complete theoretical solution for its prediction. It also shows calibration of factors given for the quarry. The combination of our drilling and blasting technologies allow us to cover the largest possible volume and achieve the maximum displacement of sterile material, reducing the costs of excavation and transportation. Althyabat and miles 2006 predicted particle dimension distribution using watershed algorithm and image analysis technique.
Overblasting results in excessive energy consumption and high explosives expenses, while underblasting produces large rocks that overwork downstream equipment and shorten their lifespan. The dnablast model provides a holistic and realistic model of rock breakage, and consequently of fragmentation distribution size, taking into account all key parameters. It is the first preparatory stage in the extraction process making rock small enough and loose enough to be efficiently excavated. Cunningham 1983, the kuzram model for prediction of fragmentation from blasting, trans. Our shotplus range of blast design and modelling software enable. Fragmentation results are the primordial kpi that determines the quality of a blast. In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization of. Split engineering rock fragmentation size image analysis. In recent years, image analysis technique has been used for prediction of rock fragmentation by blasting as a highcapability method in mining industry. Six different delay times were tested during four blasts at a granite quarry in talbotton, ga. Paper open access numerical simulation of rock fragmentation.
Oct 12, 2012 independent upon blasting direction, hole deflection may be a considerable problem in inclined schistose rock, resulting in zones with poor fragmentation and bench floor problems. By optimising rock fragmentation by blasting, you can achieve significant improvements in waste productivity, mill throughput, fragmentation profile and. Frequent blasting, poor fragmentation and poor utilization of equipment. One of the inseparable parts of mining activities is blasting which one of its important outcomes is fragmentation. Stuart thomson, oricas global bulk and packaged explosives product manager, explains in this paper how blasting improves productivity and environmental performance with some. Break it better mine blast fragmentation international mining. Blasting and fragmentation journal international society of. Blast fragmentation analysis using image processing. Accepted, online first hamdi e, du mouza j 2005 a methodology for rock mass characterization and classification to improve blast results.
Regarding the abovementioned problems in detecting rock particle dimensions using the existing software, in this research, an appropriate algorithm is developed by using the image processing methods and presented for detection of rock particles. Blast design software opitblast ask us for a free trial. While the jkmrc is involved in an international collaborative project developing a more fundamental model of rock breakage, designated as the hybrid stress blasting model hsbm cundall et al, 2001, work is continuing to develop and improve. Jan 05, 2019 in the mining world, rock blasting is one of the main procedures of ore winning process hustrulid, 1999. Pdf analysis of blasted rocks fragmentation using digital image.
Analysis of blasted rocks fragmentation using digital. Fragmentation is the first result of blasting that is directly related to the mining costs. Our fragmentation control solution provides the capture and reporting of fragmentation data, enabling improvements in fragmentation outcomes. Opitblast has tools to evaluate and estimate fragmentation even before the blast is performed. Blasting and fragmentation journal international society. Fragmentation predictor software fragmentation software. This technology allows your blasts to be captured and analysed for effective decision making. Independent upon blasting direction, hole deflection may be a considerable problem in inclined schistose rock, resulting in zones with poor fragmentation and bench floor problems. Blastatistics software for quality control of drilling and blasting in opencut mines. Blast monitoring and fragmentation analysis helps improve safety, reliability and improve accuracy. Fragmentation of the rock after blasting is an important determinant of the cost associated with these two components of mine development. Rock fragmentation control in opencast blasting pdf free. Since 1997, split engineering has been providing systems, software and service to the worldwide mining industry to enable process measurement and control. Rock fragmentation can in principle be managed by means of two options.
Whether you are a mining engineer designing blasts everyday, a manager looking for a better control of blasting operation or a blaster starting out learning how to improve blast design, dna. Prediction, blasting, rock, granulation, fragmentation, blasted material. Rock fragmentation by blasting, colorado, august, 47587. In the mining world, rock blasting is one of the main procedures of ore winning process hustrulid, 1999. Based on desired blasting inputs such as face coordinates, hole diameter, pattern layout, face rock characteristics and location, face profile, hole diameter, pattern layout, desired fragmentation size, explosives and initiating devices, environmental co.
Fragmentation predictor software fragmentation software for. There are various methods for determining the degree of fragmentation which are divided into two groups, direct and indirect methods. The effects of short delay times on rock fragmentation in. Approximately vertical fracturing and little anisotropy typical rock types are quartzite and granite gneiss. The fragmentation of rock is fundamental to mining. Improve safety and environmental impact assure security of supply optimize rock fragmentation real time rock characterization. Whether you are a mining engineer designing blasts everyday, a manager looking for a better control of blasting operation or a blaster starting out learning how to improve blast design, dnablast software has the right tools for you. The blasting process, in which the optimal fragmentation and desirable displacement are. Proceedings of the 2nd international symposium on rock fragmentation by blasting.
Split engineering provides measurements to manage fragmentation from blast to mill to improve mine profits quantify your fragmentation. Break it better mine blast fragmentation international. Its simple, intuitive interface can import actual data from the topography of the terrainbench and display them in a 3d environment, and also. The resulting calibrated value of the rock enables the quality prognosis of fragmentation in further blasting works with changed drilling geometry. This is to certify that the thesis entitled limestone rock fragmentation. Analysis of blasted rocks fragmentation using digital image processing. The microsoft excel regression analysis correlated the two intact rock properties with the blasting efficiency. Approximately vertical fracturing and little anisotropy typical rock. Portable 3d imaging and rock fragmentation motion metrics. It is affected by the blast design characteristics, the explosive quality and specification and the rock properties.
Fragmentation size distribution of a blast is the primordial kpi that determines the quality of a blast. A unique reverse engineering tool for mining engineers looking for optimizing blast on a daily basis. In the past, the lack of an easy, nondisruptive, economical measuring technique has meant that, in most cases, rock fragmentation has not been defined in quantitative terms. Analysis of blasted rocks fragmentation using digital image. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes michaud et al. Limestone rock fragmentation analysis using wipfrag. Attenuation law generator, blasting ppv warnings in near structures and critical blasting zones.
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