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A model to determine hole spacing in the rock fracture process by non-explosive expansion material

A model to determine hole spacing in the rock fracture process by non-explosive expansion material The application of the non-explosive expansion material (NEEM) is widely used as the controlled fracture method in quarry mining, especially in hard rocks. The pressure of NEEM is an important parameter in causing rock fracture. An empirical model based on hole spacing was developed to determine the pressure of NEEM in the rock fracture process. Primarily, the empirical model was developed by the mathematical method, utilizing dimensional analysis. Then, the Phase2 code, which is based on the finite element method, was utilized to predict crack growth in rocks. The results of numerical analysis show slight deviations from the empirical model. Hence, the polynomial regression analysis was used to modify the model. Finally, the modified model shows a good agreement with the results gained from numerical modeling. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Minerals, Metallurgy, and Materials Springer Journals

A model to determine hole spacing in the rock fracture process by non-explosive expansion material

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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2011 by University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg
Subject
Material Science; Materials Science, general; Metallic Materials; Characterization and Evaluation of Materials; Ceramics, Glass, Composites, Natural Methods; Surfaces and Interfaces, Thin Films; Tribology, Corrosion and Coatings
ISSN
1674-4799
eISSN
1869-103X
DOI
10.1007/s12613-011-0470-5
Publisher site
See Article on Publisher Site

Abstract

The application of the non-explosive expansion material (NEEM) is widely used as the controlled fracture method in quarry mining, especially in hard rocks. The pressure of NEEM is an important parameter in causing rock fracture. An empirical model based on hole spacing was developed to determine the pressure of NEEM in the rock fracture process. Primarily, the empirical model was developed by the mathematical method, utilizing dimensional analysis. Then, the Phase2 code, which is based on the finite element method, was utilized to predict crack growth in rocks. The results of numerical analysis show slight deviations from the empirical model. Hence, the polynomial regression analysis was used to modify the model. Finally, the modified model shows a good agreement with the results gained from numerical modeling.

Journal

International Journal of Minerals, Metallurgy, and Materials – Springer Journals

Published: Oct 4, 2011

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