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Air-deck blasting technology is extensively utilized in mining operations to enhance rock fragmentation. Despite its widespread application, the efficacy of traditional air-deck approaches, namely bottom, top, and middle placements, in augmenting blast-induced rock fragmentation remains a subject of debate. To address these disparities, this study introduces …
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1.5 BLASTING TECHNIQUES. Rock is in general blasted towards a free face. Bench blasting is often carried out in surface operations and even in large underground tunnels, caverns or stopes, when a bench face does not exist, a release cut (simply called cut) is …
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Conventional blasting causes cracks and fractures in the rock. Controlled blasting techniques produce the macrocrack in a desired direction and eliminate microcrack in the remaining rock.
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Read this article to learn about the blasting techniques adopted in underground and opencast mines. Drilling patterns, also called shot-hole patterns, are named after the type of cut holes …
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To optimize the excavation of rock using underground blasting techniques, a reliable and simplified approach for modeling rock fragmentation is desired. This paper presents a multistep experimental-numerical methodology for simplifying the three-dimensional (3D) to two-dimensional (2D) quasi-plane-strain problem and reducing computational costs ...
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Bowa introduced a practical method in an open pit mine to optimize blasting design parameters such as bench height, drill hole diameter, spacing, etc. [5]. Tosun and Konak determined a particular charge for blasting operation to reduce operating costs through an experimental method [6].
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Nowadays, rock blasting has been widely used in civil, water conservancy, hydropower, transportation, and other construction engineering fields 16,17,18.In open-pit mining, blasting operation is ...
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In open pit mining, there are several commonly used blasting methods as follows: Classification according to blasting delay time: simultaneous blasting, microsecond blasting, and millisecond blasting.
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1.5 BLASTING TECHNIQUES. Rock is in general blasted towards a free face. Bench blasting is often carried out in surface operations and even in large underground tunnels, caverns or …
WhatsApp: +86 18221755073
Different blasting methods in mining are used to fragment bulk rock masses into loose forms, primarily using explosives. The explosives are used to produce a volume of rapidly expanding gas that exerts sudden pressure on its surroundings and break the mass into pieces.
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Drilling and blasting remains the primary method of rock fragmentation in metal mining. However, blasting vibration can adversely affect the stability of the rock.
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Conventional blasting causes cracks and fractures in the rock. Controlled blasting techniques produce the macrocrack in a desired direction and eliminate microcrack in the remaining rock.
WhatsApp: +86 18221755073
The optimization of blasting operations greatly benefits from the prediction of rock fragmentation. The main factors that affect fragmentation are rock mass characteristics, blast geometry, and explosive properties. This paper is a step towards the implementation of machine learning and deep learning algorithms for predicting the extent of fragmentation (in …
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Read this article to learn about the blasting techniques adopted in underground and opencast mines. Drilling patterns, also called shot-hole patterns, are named after the type of cut holes used and the principal patterns are: (1) Pyramid cut or cone cut. (2) Wedge cut. (3) Drage cut. (4) Fan cut. (5) Burn cut. (6) Coromant cut. (7) Ring drilling.
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This study focused on the controlled blasting technique mostly used in surface mining, pre-split blasting, where reduced charges, decoupled and empty drills holes create …
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Mining operations in close proximity to dwellings and sensitive structures present challenges in terms of mitigating the undesirable effects of blasting while maintaining productivity and ensuring the safety of surrounding communities. This paper explores the application of advanced blasting techniques, including the use of electronic detonators and the splitting of …
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To meet the increasing demand for rapid and efficient evaluation of tunnel blasting quality, this study presents To meet the increasing demand for rapid and efficient evaluation of tunnel blasting ...
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Blasting techniques in mining are essential for fragmenting rock to access valuable minerals and materials. The techniques vary based on the type of mining operation (open-pit or underground) and the specific requirements of the site. In the following lines, we are going to carry out common blasting techniques used in mining and the specific considerations …
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This papers deals with application of modern drilling and blasting technology such as GPS, Laser Technology, and CTC System (Communication Techniques and Computer). Discover the world's research ...
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Limited progress in understanding blast mechanisms has led to significant discrepancies between the outcomes of existing blasting simulation techniques and actual …
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This study focused on the controlled blasting technique mostly used in surface mining, pre-split blasting, where reduced charges, decoupled and empty drills holes create fracture planes around the excavation mass, to ultimately minimize overburden on slopes, produce an optimum inclination angle, and control overbreak in general after detonation.
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To optimize the excavation of rock using underground blasting techniques, a reliable and simplified approach for modeling rock fragmentation is desired. ... (3D) to two-dimensional (2D) quasi-plane-strain problem and reducing computational costs by more than 100-fold. First, in situ tests were conducted involving single-hole and free-face ...
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Good blasting practices based on the careful application of explosive energy lead to significantly safer mining operations. Case studies demonstrate how the selection of the correct charge mass ...
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Controlled drilling and blasting continue to be an important method of block production and for block splitting. Drill and blast technique has disadvantage that sometimes, it …
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Some of the special blasting techniques used in the Indian mines to over-come the safety and productivity-related challenges have been discussed in Chap. 8. Chapter 9 provides a summary of this book. The future challenges with underground blasting and way forward to deal with the future challenges have also been discussed in this chapter.
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He has developed expertise in the areas of rock blasting (including controlled blasting techniques for large underground excavations, tunnels, cautious blasting near structures, controlled splitting of dimensional blocks etc), rock mechanics …
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Controlled drilling and blasting continue to be an important method of block production and for block splitting. Drill and blast technique has disadvantage that sometimes, it produces cracks in uncontrolled manner and also produces micro cracks in the block as well as in remaining rock, if not carefully carried out.
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The dimensional parameters in such cases must be decided on the basis of assessment of rock mass and geo-mining conditions. The dimensional parameters such as burden and spacing for underground ring blasting have been related with hole diameter by Rustan . This relationship however is generalized in nature and doesn't correlate the ...
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To optimize the excavation of rock using underground blasting techniques, a reliable and simplified approach for modeling rock fragmentation is desired. This paper …
WhatsApp: +86 18221755073
Different blasting methods in mining are used to fragment bulk rock masses into loose forms, primarily using explosives. The explosives are used to produce a volume of rapidly expanding gas that exerts sudden pressure on its …
WhatsApp: +86 18221755073
Limited progress in understanding blast mechanisms has led to significant discrepancies between the outcomes of existing blasting simulation techniques and actual blasting results, making it difficult to predict muckpile characteristics, optimize blasting designs, and guide on-site production. To address this challenge, this study presents a machine …
WhatsApp: +86 18221755073
Bowa introduced a practical method in an open pit mine to optimize blasting design parameters such as bench height, drill hole diameter, spacing, etc. [5]. Tosun and Konak determined a particular charge for blasting operation to reduce operating costs through an …
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