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mine drilling blasting and detonation
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mine drilling blasting and detonation
Optimized design of drilling and blasting operations in
Drilling and blasting can be considered as a system that consists of three different subsystems, including technical parameters like burden, spacing, depth, bit or Drilling and blasting are a widely used excavation method in tunnelling applications due to its versatility, lower initial investment cost and easier applicability Drilling and blasting designs for parallel hole cut and V-cut
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(PDF) Method for calculation of drilling-and-blasting
The method for calculating drilling-and-blasting operations parameters is based on the regularities of emulsion This research was carried out to find a possible way of optimizing the drilling and blasting operations in an open pit mine of Somair (Société des Mines de Optimization of drilling and blasting operations in an
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Advanced Analytics for Drilling and Blasting SpringerLink
Drilling and blasting as a key activity in the mining cycle have a key role in operational risk management. Many empirical methods have been developed to This paper presents a case study of limestone mine where a controlled blasting was conducted near a green structure of wagon tippler (at 2 m) being Controlled blasting in a limestone mine using electronic
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Optimization of the drilling-and-blasting process to improve
during the drilling-and-blasting operations at the mining stage affects the following operations at the stage of processing and could give a positive economic effect to the The removal of wires on explosives and blasting products is aiding optimisation of the process. Whether it be wireless detonation or initiation systems, those in the blasting MINING ENGINES SLOPE STABILITY Orica
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Final Wall Stability in Metal Open Pit Mines Using
Unlike the drilling and blasting mine plans, the pattern of a presplit blasting is usually dominated by the capabilities of the drilling rig used at open pit mines. As a zero detonation delay (simultaneous blasting) At blasting interface, and,such that,where is radius of detonation wave front, is radius of the exploded air, is function, is time, is initial density, and is density at any moment. For the closed explosion pressure of the extended charge: As exploded air expands, . When (i.e., ), expansion ends, in which is pressure of exploded air, is average A Study of Millisecond Blasting on High Bench at Barun Iron
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Drilling and blasting designs for parallel hole cut and V-cut
Scientific Reports Drilling and blasting designs for parallel hole cut and V-cut method in excavation of underground coal mine galleries Skip to main content Thank you for visiting nature.Analysis of Blasting Practices on the Mine. Taking into account the special conditions of the Sangarédi bauxite deposit, especially according to the proportions of Prof. PROTODIAKONOV ( f = 3 6), blasting is required. Hard and semi-hard ores are mined to break up the rock for loading, transport and mechanical handling.Analysis and Optimization of Blasting Practices at the Sangaredi Mine
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Experience of Drilling-and-Blasting in Diamond Fields in Yakutia
Pre-mine loosening of rocks involves drilling and blasting of overburden composed of dolomite, limestone, dolerite, etc. having the hardness of 1–6 on Protodyakonov’s scale and density of 1.84–2.98 t/m 3, and kimberlite having the hardness factor of 1–7 and density of 2.31–2.56 t/m 3.Drilling and blasting methods have been used as a common driving technique for shallow-hole driving and blasting in rock roadways. With the advent of digital electronic detonators and the need for increased production efficiency, the traditional blasting design is no longer suitable for deep hole blasting. In this paper, a disperse Theoretical and numerical simulation investigation of deep hole
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Advanced Analytics for Drilling and Blasting SpringerLink
Detonation of explosives confined in a blast hole results in applying shock waves to the borehole wall, 41 sets of data from a copper mine blasting have been considered for the ANN model training and 10 datasets for testing the model. Desired PPV, Drilling änd blasting of rocks. Google Scholar Singh, P.,The primary purpose of blasting is to fragment rock, and there are significant rewards for delivering a fragmentation size range that is not only well suited to the mining system it feeds, but also minimizes unsaleable fractions and enhances the value of what can be sold. The outcome of blasting operations is determined by a number of Optimization of Drilling and Blasting by Empirical Modelling
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Sensitivity analysis on blast design parameters to improve bench
Surface mines primarily use drilling and blasting, which is an effective and relatively inexpensive method to excavate the hard rock mass. The geometry of surface mine bench blasting has a significant influence on drilling and blasting efficiency and cost, as well as various subsequent activities, like loading and hauling, and finally crushing Drilling and blasting method as a common excavation method is widely used in the underground engineering construction. However, in the complicated geological conditions, the path of blasting(PDF) Controlled Trim-Blasting Model to Improve Stability and
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Services iRing Online training, consulting, technical
Since 2003, the experts at iRing have been solely dedicated to the pursuit of optimizing underground drilling and blasting operations. In this process, we have established a system to train users on how to effectively use the Drilling and blasting are fundamental operations in the mining cycle and constitute an important component of the mining costs. Rock fragmentation can in principle be managed by means of two options: by increasing or (PDF) Blasting and Mining Raleke R . C . Okeke
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Study on parameter optimization of deep hole cumulative blasting
Gas disaster is one of the main mine disasters affecting the safe of coal mines 1,2,3,4.The most common method to prevent gas disaster is gas drainage 5,6,7.Permeability enhancement is currentlyThe drilling equipment is the Atlas φ152 drilling rig of Jianshan Phosphate Mine and the Atlas φ145 (φ130, φ120, φ115, φ90) drilling rig of the engineering company. Blasting mainly uses 1# rock emulsion explosive and rock expanded ammonium nitrate explosive (the diameter of the roll is 70 mm, 1.5 kg/cylinder).Study on Blasting Technology for Open-Pit Layering of Complex Mine
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Drill and Blast Performance Evaluation at the Obra Pit of Chirano
28 GMJVol. 16, No. 2, December, 2016 Drill and Blast Performance Evaluation at the Obra Pit of Chirano Gold Mines Ltd, Ghana* 1P. A. Eshun, 1B. O. Afum and 2A. Boakye 1University of Mines and Technology, P.O. Box 237, Tarkwa, Ghana 2Kinross Gold Corporation Chirano Mine, Ghana Eshun P. A., Afum B. O. and Boakye A. (2016), Both geological drilling data and terrain data were imported to the system to build the mine geological model from which the geological situation of blasting area can be obtained. In addition, bench top surface and bench slope have key influence on blast design, with the bench top surface affecting the holes orifice elevation and bench slope Development and Application of Blast Casting Technique in Large
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Optimization of Blasting-Associated Costs in Surface Mines Using
In open-pit mines, blasting energy may result in objectionable impacts in the form of air pollution, air overpressure, ground vibration, flyrock, back break, dust, and improper fragmentation (Hasanipanah & Bakhshandeh Amnieh, 2020a; Hasanipanah et al., 2018; Lilly & Fidler, 2011).Numerous efforts have been made to assess undesirable Based on the mining technica l conditions of mine, the method of vertical blast hole charges with a short-delayed blasting was adopted. The blasting block that was chosen for the experimental blasts consisted mainly of sandstones and siltstones. Drilling and blasting parameters were settled at the mine in the previous years of operation.Optimization of the drilling-and-blasting process to improve
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Evidences of the influence of the detonation sequence in rock
Changes in the bench height or drill-hole diameter, when the product size is required to be kept constant due to market demand or crusher/grinder requirements, result in changes in all other parameters and ultimately changes in the capital and operational cost of drilling, and the cost of blasting (Jimeno et al., 1995 JIMENO, C. L., JIMENO, E. L., FRANCISCOJ.The improvement of the blasting pattern aims to maximize the use of explosive energy for better fragmentation and also reduce explosive material consumption and decrease the blasting’s undesirable effects. The power deck method is one of the new technologies in blast efficiency enhancement and cost reduction in surface mine blasts. The use of air decking techniques for improving surface mine blasting
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