The drill and blast method in tunnelling involves drilling a series of holes in a precise pattern, then filling them with explosives to break and remove rock. The design of the drill and blast pattern is crucial, as it determines the effectiveness and safety of the operation. It factors in rock type, tunnel size, and desired fragmentation. Proper sequencing and timing of blasts are essential to minimise vibration, control overbreak, and maintain the tunnel's structural integrity. Follow us at tu
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The drill and blast method in tunnelling involves drilling a serie…
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A well designed and executed blasting in an open-pit mine. The blasting principles are the same in tunnelling with the main difference that there is no free surface in tunnels. This free surface should be created with specific design of cut holes. If you have any questions about drilling and blasting method feel free to ask! #blasting #drilling #drillandblast #drillingandblasting #blastingengineer #openpit #openpitmine #miningengineering #tunnelling #tunneling #tunnelengineer #tunnelengineering
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A well designed and executed blasting in an open-pit mine. The b…
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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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