Author : Department of Health and Human Services
Publisher : CreateSpace
ISBN 13 : 9781493573370
Total Pages : 78 pages
Book Rating : 4.5/5 (733 download)
Book Synopsis A New Perimeter Control Blast Design Concept for Underground Metal/Nonmetal Drifting Applications by : Department of Health and Human Services
Download or read book A New Perimeter Control Blast Design Concept for Underground Metal/Nonmetal Drifting Applications written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.