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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Fracture Characterization: An Effective Technique for Ensuring Accurate Blast Design
by M. A Saliu and J.M Akande

Almost all granite outcrops have natural fractures which influence their response to mechanical failure. This paper focuses on the use of AutoCAD computer software model in characterizing the fractures of a granite outcrop at Johnson Constructions quarry, Akure, Ondo State. The fractures were mapped. The results were used to determine the in situ block-size distribution of the outcrop. They indicated irregular block size distributions which were set with average surface area of in - situ blocks sizes ranges of 0.01-1.50m2, 1.51-4.00m2, 4.01-8.00m2, 8.01-12.00m2, 12.01-16.00m2, 16.01-24.00m2 and 24.01-32.00m2respectively. It was recommended that the region with average surface area of in - situ block of range 0.01-1.50m2 should be charged with 50% of the current high charge in use, for range of 1.5-4.00m2, 60%, for range of 4.01-8.00, 80% and 100% for ranges above 8.00m2
Keywords: rock mass; fracture characterization; scanline mapping; AutoCAD model
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010