816K views · 6.6K reactions | Drill and blast method remains a...
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816K views · 6.6K reactions | Drill and blast method remains a...
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A blasting in tunnel. Drill and blast method is one of the most flexible tunnelling methods in hard rock. This method can be performed in wide variety of geological condition, in any tunnel shape and dimension. Design of the drill and blast pattern is an important part of this method. Ground borne vibration, air blast and fly rock are important factors that should be considered in the design along with more common parameters such as advance rate, powder factor, drill factor, maximum instantaneou
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A blasting in tunnel. Drill and blast method is one of the most flexible …
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The drill and blast method in mining involves drilling holes into rock, filling them with explosives, and initiating controlled detonations. An integral aspect of this process is the strategic use of detonation delay, where intentional pauses between explosive charges in different holes enhance the effectiveness of fragmentation. This technique ensures improved rock breakage, minimised ground vibrations, reduced flyrock, and optimised energy distribution. The calculation of delay times considers
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The drill and blast method in mining involves drilling holes into rock, fil…
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24K views · 226 reactions | Tunnelling in rock using the drill and...
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24K views · 226 reactions | Tunnelling in rock using the drill a…
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A blasting video in a tunnelling project in US. Drill and blast method is one of the most common tunnelling techniques in hard rock. If you are in tunnelling field or are interested in tunnelling, you can check out our Online Tunnel Engineering course. This comprehensive course covers all tunnelling and shaft construction techniques in detail. Click the link in bio or below. https://www.tunnel.engineering/challenge-page/51f7482b-3bfd-48fa-b9a2-3b14d6f8b5ae Follow us at tunnel.engineering Video c
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A blasting video in a tunnelling project in US. Drill and blast meth…
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The drill and blast method is a key technique in mineral extraction, involving drilling holes into rock surfaces, loading them with explosives, and detonating to fragment the rock for extraction. It's highly effective in hard rock environments, enabling efficient mineral retrieval. Despite its efficacy, it requires meticulous planning and safety measures to minimise environmental impact and ensure worker safety. We have covered drill and blast technique in our online Tunnel Engineering course. C
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The drill and blast method is a key technique in mineral extraction, in…
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In the drill and blast method of tunnelling, the process begins with strategically drilling holes into the rock at specific intervals along the tunnel alignment. These holes serve as blast points for explosives. In tunnelling, blasting typically starts from center points and radiates outward. The central blast creates a void, breaking up the core of the material and forming a cavity. The drill and blast method remains a widely employed technique in tunnel construction due to its adaptability to
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In drill and blast tunnelling, utilising long gap detonator delays helps o…
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