|Appears in Collections:||Management, Work and Organisation Conference Papers and Proceedings|
|Peer Review Status:||Refereed|
Bangian, Amir Houssain
|Title:||Design Optimization of Longwall Chain Pillars|
|Citation:||Oraee K, Oraee B & Bangian AH (2010) Design Optimization of Longwall Chain Pillars In: 29th International Conference on Ground Control in Mining, Morgantown, W VA: Dept of Mining Engineering, College of Engineering and Mineral Resources, West Virginia University. 29th International Conference on Ground Control in Mining (ICGCM), Morgantown, West Virginia, U.S.A.|
|Conference Name:||29th International Conference on Ground Control in Mining (ICGCM)|
|Conference Location:||Morgantown, West Virginia, U.S.A|
|Abstract:||Determination of the optimum design of chain pillars has a significant effect on the economics and safety of Longwall operations. Most pillar design formulae are based on empirical methods with supplemented by local experience. They therefore lack versatility of application under different geotechnical conditions. In this paper, in order to illustrate the shortcomings of the above, a typical real coal pillar in Tabas coal mine has first been studied and the conventional formulae have been used to determine the optimum dimensions. The results show that a wide difference exists between the predicted and the real field data. The Oraee-Hosseini formula has then been applied to this mine in order to determine the optimum design. The results from this formula demonstrate a close fit between the theoretical values and those produced by laboratory tests and in practice. It is further demonstrated that the wide discrepancy between the results obtained from the two formulae is attributed to the dissimilarities between geotechnical conditions of Tabas and the original regions whose data were used to devise the empirical formulae. It is finally concluded that the application of numerical simulation methods and experimental equations together with engineering judgment used by the mining design engineer, will provide the most accurate design characteristics.|
|Rights:||The ICGCM president has granted permission for use of this conference paper in this Repository. The paper was first published in the proceedings of 29th International Conference on Ground Control in Mining by Morgantown, W. VA : Dept. of Mining Engineering, College of Engineering and Mineral Resources, West Virginia University.|
|Design Optimization of Longwall Chain Pillars.pdf||284 kB||Adobe PDF||View/Open|
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