Journal
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
Volume 71, Issue -, Pages 160-170Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijrmms.2014.04.024
Keywords
Top-coal caving; The mechanism of the top-coal caving; The top-coal recovery ratio; The marker method
Funding
- National Natural Science Foundation of China [U1361209]
- 973 Program [2013CB227903]
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The top coal caving mining method, developed steadily in the past two decades, has become the main method for thick seam coal mining in China. In recent years, the core research areas in the top-coal caving mining are the mechanisms of top-coal caving and the improvement of top-coal recovery ratio. In this paper, the mechanisms of the top-coal caving are illustrated by a large number of physical simulation experiments and numerical modelings of actual cases. The marker method, which has sufficient accuracy to calculate the top-coal recovery ratio, is also described in detail. (C) 2014 Elsevier Ltd. All rights reserved.
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