Selection of mining method for a certain iron ore based on analytic hierarchy process

There are a large number of goafs and other potential safety hazards because it is difficult to form caving layerat theexisting bottomless sublevel caving layer method in Anhui Longqiao iron mine. Various mining scheme, such as the analytic hierarchy process and fuzzy comprehensive evaluation method were adopted to evaluate and optimize comprehensively. In the process of choosing optimal mining program, comprehensive evaluation model was established by converting production capacity, the cost of mining, tons of stripping ratio and labor intensity into judgment matrix. Comprehensive superiority of each mining scheme was calculated by fuzzy mathematics method to obtain the superior degree of alternative mining scheme in Longqiao iron deposit, which is 33.8 %, 21.3 %, 26.7 %, 25.2 %, respectively. As a result, the first mining scheme is the optimal mining program.