Blast fragmentation photographs are analysed using image analysis software. Photographs are useful to calculate blasted rock volume. This paper describes two case studies. In one of aggregate (granite) quarry in Malaysia, with the help of UAV aerial phographs were obtained to identify rock types and geological structuresImage acquisition of blasted rock for size distribution analysis is the most critical phase of the analysis. Important issues in image sampling are: The location of the image, the image angle from the surface of the muckpile, and the scale of the image. In order to obtain good images,

4.3 Regression analysis B l max B C = b ... Calculation of Specific Drilling and Specific Charge are in the program based on Rock Volume per Blast. In turn the Rock Volume is based on Width of the Blast, which means the distance between the first and last hole in a row, or between a free surface and the last hole in the row. ...2.1.6 Visual analysis method (Maerz et al., 1996) The Visual analysis method is a subjective assessment method. In this method the post-blast muck is viewed immediately after blasting and a subjective assessment is made. This technique is not dependable as the superficial view of the muck cannot enlighten anything about the hidden portion.

Rock blasting fragmentation analysis is very important in a mining indutry. Reasonable blasting parameter can reduce the costs of mining and lessen the subsequent workload, so that the overall efficiency in a mining industry can be greatly improved. Usually, the commonly used methods of fragmentation analysis are sieving, statistics on the rate ...Rock from tunnelling and other types of development work has a fine fragmentation. Cut-and-fill mining is a method that normally results in blasted rock with an advantageous size distribution. Block caving on the other hand often results in large amounts of boulders, since blasting of the rock is normally not used.

Blasting and Fragmentation Journal. Edited and reviewed by expert researchers, industry professionals, and academics, Blasting and Fragmentation presents contemporary analysis of engineering practices as related to explosives application to rock. Published twice a year.The economic analysis of the use of explosives is an important part of blasting operations in mining and construction. Explosives are energy, and the efficient use of …

Rocketmine Blast Monitoring and Fragmentation Analysis Solution. By using our blast monitoring technology and our blast monitoring equipment we are able to provide accurate data to our clients allowing for improved safety, reliability and accuracy. Blast Design and Profile Monitoring using Drones. 3D photogrammetric technology using drones has ...12%Another method applied in recent years is the analysis of the images taken from blasted rock materials in truck box which can be classified in other applications. This method has been proposed by of Maerz and Palangio ( 2004 ) first and was applied by Palangio et al. ( 2005 ) and Eloranta et al. ( 2007 ).

A quantitative research was conducted at Tschudi mine, Tsumeb, Namibia with its main drive being to determine the influence that density and blast parameters has on the performance of a blast. The factors that are most vital to the fragmentation process are classified into three namely: explosive parameters, rock parameters and blast geometry.Rock blasting is the rock excavation technique most widely adopted in the various fields of the mining and con-struction industries because of its economical and efficient aspects [1]. In surface mines and quarries, the main objective is to exact the largest possible quantity at minimum cost.

Transcribed image text: Reduced-Scale Crater Test Analysis ANFO was compared with an emulsion mix for consideration in rock blasting in a tar sands deposit with a sandstone host rock. Crater volumes were surveyed and fragmentation was measured to determine the mean particle size for each crater formed. A summary of crater tests results is shown below. explosive Charge L:D Drilled depth Charge ...One of the most important aspects of mine blasting is accomplishing proper rock fragmentation to optimise not only blasting operation itself but also the entire mine to mill processes. As improper fragmentations, i.e., oversizes and fines, extremely deteriorate overall mining processes, its in-depth analysis is essentially required.

In this study, rock mass properties, blasthole parameters, powder factor (q), and fragment size distribution of blasted rock using image analysis technique were determined for several blasting ...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ...

Abstract. Rock mass is a heterogeneous material, and the heterogeneity of rock causes sizes distribution of fragmented rocks in blasting. Prediction of blasted rock mass fragmentation has a significant role in the overall economics of opencast mines. Blasting as primary fragmentation can significantly decrease the cost of loading, transport ...fragmentation analysis of blast fragment sizes in very short interval of time. Keywords:-WipFrag, Fragmentation, Blasting, Uniformity Coefficient, Coefficient of Gradation. I. INTRODUCTION Rock Fragmentation is one of the major concern of any mining industry, which affects the financial part of the industry quite heavily.

Figure 4.25 VOD result for blast No.5 at OCP-3 … 72 Figure 4.26 Details of the experimental hole for blast No.7 at OCP-1 … 73 Figure 4.27 VOD result for blast No.7 at OCP-1 … 74 Figure 4.28 Details of the experimental hole for blast 3 at OCP-1 … 75 Figure 4.29 VOD result for blast 3 at OCP-1 …At the same time, the observation and analysis of the blasting process are used to determine the sound of the rock blasting, the intensity of the explosive fire, the amount of rock blasting dust, the rock fragmentation, and the purification time of the gaseous products from detonation in air as the evaluation indexes of the blasting test.

Construction Blasting Risk Management. As we can see from the November 2008 article, " Construction Blasting Fundamentals," there are many forms of risk associated with blasting work. It is clear that, despite these risks, experience reveals that blasting can be performed without incident, when adequate risk-control measures are used to manage ...The measure of the effect of the size distribution of the blasted material was done via: √ Analysis of pictures taken in the pit, after the blast, or from a camera newly installed facing the bowl of the north crusher. This was done with software acquired from Split Engineering √ …

@article{osti_6814472, title = {Pipeline response to blasting in rock}, author = {Esparza, E D}, abstractNote = {Twenty-one highway construction blasts were used to record pipeline data from production shots that consisted of small explosive arrays with delays among the explosive holes. A 30-in pipe section and a 12-in. pipeline in the vicinity of the highway construction work were ...2. Contemplation of Blast Design: Blast designing is not a science, but knowledge, experience, studying and analyzing past practices in relation to rock strata & geology etc., makes blaster to achieve perfection. Thus, for a blaster, valuable tool is the file of blast reports that he builds as he gains experience. Not only do these provide evidence of the quality of his work, but they also ...