Download or read book Analysis and Evaluation of Fragment Size Distributions in Rock Blasting at the Erdenet Mine written by Эрдэнэбаатар Дондов and published by . This book was released on 2015 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock blasting is one of the most important operations in mining. It significantly affects the subsequent comminution processes and, therefore, is critical to successful mining productions. In this study, for the evaluation of the blasting performance at the Erdenet Mine, we analyzed rock fragment size distributions with the digital image processing method. The uniformities of rock fragments and the mean fragment sizes were determined and applied in the Kuz-Ram model. Statistical prediction models were also developed based on the field measured parameters. The results were compared with the Kuz-Ram model predictions and the digital image processing measurements. A total of twenty-eight images from eleven blasting patterns were processed, and rock size distributions were determined by Split-Desktop program in this study. Based on the rock mass and explosive properties and the blasting parameters, the rock fragment size distributions were also determined with the Kuz-Ram model and compared with the measurements by digital image processing. Furthermore, in order to improve the prediction of rock fragment size distributions at the mine, regression analyses were conducted and statistical models w ere developed for the estimation of the uniformity and characteristic size. The results indicated that there were discrepancies between the digital image measurements and those estimated by the Kuz-Ram model. The uniformity indices of image processing measurements varied from 0.76 to 1.90, while those estimate by the Kuz-Ram model were from 1.07 to 1.13. The mean fragment size of the Kuz-Ram model prediction was 97.59% greater than the mean fragment size of the image processing. The multivariate nonlinear regression analyses conducted in this study indicated that rock uniaxial compressive strength and elastic modulus, explosive energy input in the blasting, bench height to burden ratio and blast area per hole were significant predictor variables in determining the fragment characteristic size and the uniformity index. The regression models developed based on the above predictor variables showed much closer agreement with the measurements.

Download or read book Measurement and Analysis of Blast Fragmentation written by Jose A. Sanchidrian Blanco and published by CRC Press. This book was released on 2012-11-05 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragmentation characteristics influence mucking productivity, crusher throughput and energy consumption, plant efficiency, yield and recovery, or the price itself of the end product in the case of industrial minerals and aggregates. Reliable, quantitative measurements of fragment sizes are instrumental in controlling and optimizing the blasting res

Download or read book Measurement of Blast Fragmentation written by John A. Franklin and published by Routledge. This book was released on 2018-12-19 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of workshop papers providing state-of-the-art reviews on all aspects of fragmentation, including photographic requirements, image enhancement, statistical treatment, and applications in quarrying, mining and minerals processing industries.

Download or read book Rock Fragmentation by Blasting written by B. Mohanty and published by CRC Press. This book was released on 2020-12-18 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of symposium papers covers a wide range of topics on rock fragmentation, from carefully documented case studies to attempts, for example, at fractal representation of the fracture process itself.

Download or read book An Evaluation of the Effect of Blast generated Fragment Size Distribution on the Unit Costs of a Mining Operation Using Modeling and Simulation Techniques written by Solomon Augustine Tucker and published by . This book was released on 2015 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Fragmentation by Blasting written by Jose A. Sanchidrian and published by CRC Press. This book was released on 2009-08-20 with total page 873 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at the 9th International Symposium on Rock Fragmentation by Blasting, held in Granada, Spain, 13-17 August 2009. A state-of-the-art collection of articles on developments in rock blasting and explosives engineering, with contributions on rock characterization, explosives and initiation systems, blast design and monitoring, fragmentation assessment, numerical modeling, vibrations from blasting, environmental and economical aspects of rock blasting, and more. Containing unique knowledge, case studies, ideas and insights, this volume is must-have literature for researchers and practitioners in the field of explosives and blasting.

Download or read book Rock Fragmentation by Blasting written by Pradeep K. Singh and published by CRC Press. This book was released on 2012-11-05 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Fragmentation by Blasting contains the papers presented at the 10th International Symposium on Rock Fragmentation by Blasting (New Delhi, India, 26-29 November 2012), and represents the most advanced forum on blasting science and technology. The contributions cover all major recent advancements in blasting and fragmentation, from realistic tre

Download or read book Rock Blasting Effects And Operations written by Roy and published by . This book was released on 2005-01-01 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a unique supplement to contemporary scientific literature on rock blasting technology. It encapsulates theoretical and practical aspects of drilling and blasting techniques used in both surface and subterranean excavations connected with civil as well as mining activities. Case studies are presented to illustrate correlations between theoretical calculations and empirical findings. It also summarizes the results of research carried out by the Blasting Department of the Central Mining Research Institute since its inception in the year 1970. It contains fifteen extensive chapters covering statistical methods, design parameters, rock breakage mechanism, structural damage, fragmentation, emerging techniques, surface and sub-surface blasting methodologies, safety and environmental aspects, explosive characteristics and modern initiating devices. Contents: Statistical Approaches and Useful Mathematical Formulae / Terms and Parameters Influencing Mine and Ground Excavations / Detonation Principle and Rock Breakage Mechanism / Strength of Explosives-Theoretical Derivation and Laboratory Determinations / Prediction, Control and Damage Thresholds of Ground Vibration from Opencast Blasting / Structural Response and Damage Criteria for Safety of Surface Structures / Influence of Blasting on Surface Structures and Underground Workings / Blast Monitoring and Characterization / Ringhole Blasting in Coal in Blasting Gallery Panels / Rock Fragmentation and Assessment / Socio-economic and Environmental Impacts of Blasting / Emerging Blasting Techniques / Rock Excavation by Non-explosive Methods / Blasting in Surface and Subsurface Hard Rocks / Performance Evaluation of Explosives and Accessories

Download or read book International Symposium on Rock Fragmentation by Blasting written by and published by . This book was released on 1990 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Rock Cutting and Rock Fragmentation by Blasting Using Image Analysis written by Mohamed Cherif Djouama and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Open Pit Blast Design written by Andrew Scott and published by . This book was released on 1996 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Rock Fragmentation by Blasting written by B. Romdhane and published by . This book was released on 1977 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First International Symposium on Rock Fragmentation by Blasting August 23 26 1983 Lule University of Technology written by Roger Holmberg and published by . This book was released on 1983 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Fragmentation Assessment by Digital Photography Analysis written by C. Doucet and published by . This book was released on 1992 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fragmentation by Blasting written by W. L. Fourney and published by Society for Experimental. This book was released on 1985 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement and Analysis of Blast Fragmentation written by Jose A. Sanchidrian Blanco and published by CRC Press. This book was released on 2012-11-05 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragmentation characteristics influence mucking productivity, crusher throughput and energy consumption, plant efficiency, yield and recovery, or the price itself of the end product in the case of industrial minerals and aggregates. Reliable, quantitative measurements of fragment sizes are instrumental in controlling and optimizing the blasting res

Download or read book Limestone Rock Fragmentation analysis Using WipFrag written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quick and accurate measurements of size distribution are essential for managing fragmented rock and other materials. Various fragmentation measurement techniques are available and used by industry/researchers but most of the methods are time consuming and not precise. WipFrag is an automated image based granulometry system that uses digital image analysis of rock photographs and video tape images to determine grain size distributions. WipFrag images can be digitized from fixed video cameras in the field, or using roving camcorders. Photographic images can be digitized from slides, prints or negatives, using a desktop copy stand. Digital images in a variety of formats, delivered on disk or over electronic networks, can be used. In course of the project, ten rock pile samples have been collected using Sony camcorder at different angles. The photographs are analyzed in a system using WipFrag image analysis software. The analyses of photographs are carried out using single image and multiple image analysis techniques. The cumulative size distribution is obtained from single image analysis technique where as multiple image analysis technique is used for optimum rock fragmentation.