A Comparative Study of Various Multi-criteria Decision-Making Models in Underground Mining Method Selection

Abstract

The present study aims to make a comparative study of the selection of mining method using five multi-criteria decision-making (MCDM) models (TOPSIS, VIKOR, improved ELECTRE, PROMETHEE II, and WPM). Underground mining method selection is a multi-criteria decision-making problem, and the mine planners face the challenges in the selection of the appropriate mining method. The selection of mining method depends on multiple intrinsic factors (dip, shape, thickness, depth, grade distribution, RMR of ore, RMR of hanging wall, and RMR of footwall) and extrinsic factors (available technology). The study considered only intrinsic factors in selection of mining method. In the last few decades, many multi-criteria decision-making models have been developed. The study uses AHP technique for determining the weights of the effective criteria. The proposed techniques were implemented for Tummalapalle mine of Uranium Corporation of India Limited (UCIL), India. The results revealed that mining methods selected were not uniform. Actually it is a case of room and pillar being the preferred method by three of the MCDM models, while it is a second or equal preference method in two of the MCDM models applied.