Application of Extended Set Pair Analysis on Wear Risk Evaluation of Backfill Pipeline

Zaihai Wu, Zhaojun Qi, Yunpeng Kou, Zheng Li, Guoyan Zhao and Weizhang Liang ()
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Zaihai Wu: Backfill Engineering Laboratory, Shandong Gold Mining Co., Ltd., Yantai 265419, China
Zhaojun Qi: Backfill Engineering Laboratory, Shandong Gold Mining Co., Ltd., Yantai 265419, China
Yunpeng Kou: Backfill Engineering Laboratory, Shandong Gold Mining Co., Ltd., Yantai 265419, China
Zheng Li: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Guoyan Zhao: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Weizhang Liang: School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Sustainability, 2022, vol. 14, issue 23, 1-17

Abstract: Filling slurry can inevitably cause irreversible wear to the pipeline, which represents great costs to mines. This study aims to propose an extended set pair analysis (SPA) for the wear risk evaluation of backfill pipeline. First, to fully describe the wear risk of backfill pipeline, an evaluation index system was established from the aspects of slurry characteristics, pipeline properties, and slurry flow state. Then, the experts grading method was modified with probabilistic linguistic term sets (PLTSs) to obtain subjective weights. Meanwhile, the criteria importance through intercriteria correlation (CRITIC) approach was used to calculate objective weights. By introducing a preference coefficient, they were integrated to determine the comprehensive weights. After that, the classical SPA was extended with membership functions and fuzzy entropy theory, so that the wear risk of backfill pipeline can be evaluated from the perspectives of both the risk level and complexity. Finally, the proposed methodology was applied to assess the wear risk in the Jinchuan nickel mine, Dahongshan copper mine, Hedong gold mine, and Xincheng gold mine. The reliability of evaluation results was further verified through sensitivity and comparative analyses. Results indicate that the proposed methodology is feasible for the wear risk evaluation of backfill pipeline, and can provide guidance on the wear risk management.

Keywords: wear risk; backfill pipeline; set pair analysis (SPA); combination weight; fuzzy entropy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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