A FUZZY APPROACH TO SELECTING ROOF SUPPORTS IN LONGWALL MINING

Mustafa Emre Yetkin, Ferhan Simsir, Muharrem Kemal Ozfirat, Pınar Mızrak Ozfirat, Hayati Yenice

Abstract


As a decision-making problem, selecting proper machines and equipment plays a key role for mining sites and companies. Many factors affect this decision, and values belonging to these factors can be expressed numerically and/or non-numerically. In order to make the most appropriate decision, engineers must carry out an evaluation process that comprises all criteria that might affect decision-making. To achieve this, multi-criteria decision-making tools are used. As a result of technological developments, coal outputs in longwall mining have risen tremendously over the last decades, and longwall mechanisation has become unavoidable. The significance of powered roof supports in particular increases day- by-day, since the rate of roof support has to be in accordance with the rate of face advance in longwalls.

In this study, an integrated fuzzy analytic hierarchy process and fuzzy goal programming model is used to select the most suitable powered roof supports. The procedure is applied to a real-life underground coal mine that is operated using the longwall method. Seven alternative powered roof supports are compared with each other, taking a total of 24 decision criteria under four main topics into account. In conclusion, the most suitable roof supports for the mine under study are determined and recommended to the decision-makers of the system. 


Keywords


Powered Roof Support Selection, Fuzzy Analytic Hierarchy Process, Selection Problems

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DOI: https://doi.org/10.7166/27-1-1366

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Copyright (c) 2016 Mustafa Emre YETKİN, Ferhan ŞİMŞİR, Muharrem Kemal ÖZFIRAT, Pınar Mızrak ÖZFIRAT, Hayati YENİCE


ISSN 2224-7890 (on-line) ; ISSN 1012-277X (print)


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