Safety Risk Assessment and Management of Panzhihua Open Pit (OP)-Underground (UG) Iron Mine Based on AHP-FCE, Sichuan Province, China

Abstract

In order to prevent accident cases and improve safety in the mining industry, a safety risk assessment and management process is needed to identify and respond to high-risk hazards in mines. This study aims to investigate the main safety risks factors influencing the typology of accidents in the Panzhihua OP-UG iron ore mine with the concept of minimizing them, reducing injuries and fatalities, and improving prevention policies. A methodology based on the analytic hierarchy process and fuzzy comprehensive evaluation (AHP-FCE) is applied to conduct a study on the assessment and evaluation of mine safety risks. Upon investigating the safety situation at the mine site, 85 risk factors were identified, of which 49 factors were considered to be non-threatening and therefore compatible with existing control measures. The remaining potential hazards, altogether 36 factors, were ultimately categorized into six major specific groups. A mine safety index system and safety risk evaluation model are established to support the evaluation process. The results show that the overall risk level of the Panzhihua OP-UG iron mine is at a medium level with a score of 86.5%. Appropriate risk management measures were recommended for each risk factor from the perspectives of theoretical analysis, safety system optimization of mine technology, disaster prevention and control of slope failure, etc. Finally, this research serves as a great industrial value and academic significance to provide technical support for the safety production of mining enterprises. Hence, the FCE method can serve as a technique to accurately evaluate the impact of iron mine risk.

Evaluation and Application of Surrounding Rock Stability Based on an Improved Fuzzy Comprehensive Evaluation Method

“…The FCEM is a comprehensive analysis method that combines qualitative and quantitative analysis [34]. It involves determining the factors and evaluation sets, obtaining the weights for each evaluation index, establishing the membership function, constructing the fuzzy evaluation matrix, and ultimately determining the evaluation results through various logical operations and relevant criteria.…”

A Comprehensive Evaluation of Resilience in Abandoned Open-Pit Mine Slopes Based on a Two-Dimensional Cloud Model with Combination Weighting

“…Hence, the slope safety and ecological evaluation indicators share a standard system. This study uses existing research [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] as a reference to select a comprehensive evaluation indicator for abandoned open-pit mine slopes, based on which the assessment indicator system in Table 1 is established.…”

Influence of Recirculation Flow on the Dispersion Pattern of Blasting Dust in Deep Open-Pit Mines

“…80% of the ore in metallurgical mines in China comes from open-pit mining. With the continuous increase of mining depth, most open-pit mines have entered the deep mining mode . As the mining depth of the open-pit mine increases, when the natural wind flows through the open-pit mine, it will form a wind flow in the opposite direction to the natural wind in the pit, forming a recirculation structure.…”

“…With the continuous increase of mining depth, most open-pit mines have entered the deep mining mode. 1 As the mining depth of the open-pit mine increases, when the natural wind flows through the open-pit mine, it will form a wind flow in the opposite direction to the natural wind in the pit, forming a recirculation structure. The long-term accumulation of pollutants within the mining pit has resulted in the persistent deterioration of the operational environment within the open-pit mine.…”