Mining of Mineral Deposits

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An Adaptive Neuro Fuzzy Inference System to Model the Uniaxial Compressive Strength of Cemented Hydraulic Backfill

H. Basarir1, H. Bin2, A. Fourie1, A. Karrech1, M. Elchalakani1

1The University of Western Australia, Perth, Australia

2University of Science and Technology Beijing, Beijing, China

Min. miner. depos. 2018, 12(2):1-12

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      Purpose. The purpose of this paper is to develop the models for predicting the uniaxial compressive strength (UCS) of cemented hydraulic backfill (CHB), a widely used technique for filling underground voids created by mining operations as it provides the high strength required for safe and economical working environment and allows the use of waste rock from mining operations as well as tailings from mineral processing plants as ingredients.

      Methods. In this study, different modelling techniques such as conventional linear, nonlinear multiple regression and one of the evolving soft computing methods, adaptive neuro fuzzy inference system (ANFIS), were used for the prediction of UCS, the main criterion used to design backfill recipe.

      Findings. Statistical performance indices used to evaluate the efficiency of the developed models indicated that the ANFIS model can effectively be implemented for designing CHB with desired UCS. As proved by the performance indicators ANFIS model gives more compatible results with the expert opinion and current literature than conventional modelling techniques.

      Originality. In order to construct the models a very large database, containing more than 1600 UCS test results, was used. In addition to widely used conventional regression based modelling techniques, one of the evolving soft computing methods, ANFIS was employed. Numerical examples showing the implementation of constructed models were provided.

      Practical implications. As proved by the statistical performance indicators, the developed models can be used for a reliable prediction of the UCS of CHB. However, more accurate results can be achieved by expanding the database and by constructing improved models using the algorithm presented in this paper.

      Keywords: cemented hydraulic backfill, adaptive neuro fuzzy inference system, multiple regression model, underground mining


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