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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
A New Perimeter Control Blast Design Concept for Underground Metal/Nonmetal Drifting Applications

A New Perimeter Control Blast Design Concept for Underground Metal/Nonmetal Drifting Applications

And Prevention, Centers for Disease Cont
Safety and Health, National Institute Fo
Human Services, D.

Paperback

Technology & Engineering

ISBN10: 1493573373
ISBN13: 9781493573370
Publisher: Createspace
Published: Oct 24 2013
Pages: 78
Weight: 0.45
Height: 0.16 Width: 8.50 Depth: 11.00
Language: English
This report presents a new concept in perimeter control blasting for underground metal/nonmetal mine drifting applications focusing on the importance of the buffer holes in a blast design. The new blast design concept applies the understanding of radial damage that is caused by the buffer hole column charge. Buffer hole radial damage is defined by a practical damage limit applied to the rock lying between the buffer holes and the perimeter. A favorable comparison was made between five successful controlled blast designs and the concept of practical damage limit. This concept is easy to use and acceptance of the approach would only require mines to conduct trial blasts to test the design theory.

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