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大型露天矿山转为地下开采的采矿方法选择涉及诸多因素,其中许多因素具有模糊属性。本文根据南芬铁矿的矿床赋存条件及开采技术条件,基于理想点规范化方法和海明贴近度方法进行采矿方法初选,基于模糊多属性决策理论进行采矿方法终选,提高了采矿方法优选的科学性。采用主客观组合权重法确定采矿方法各影响因素的权重,使得权重的确定更加合理,增加了优选结果的准确性。优选出南芬铁矿露天转地下开采的采矿方法为无底柱分段崩落法。根据南芬铁矿露天转地下开采的采矿工程设计的专家评审意见,本文优选出的采矿方法技术上可靠、经济上合理,可在实际生产中应用。
The choice of mining method for converting a large opencast mine to a subterranean mine involves a number of factors, many of which are vague. Based on the deposit conditions and technical conditions for mining in Nanfen Iron Mine, the primary mining method is selected based on the ideal point normalization method and the Haiming proximity method, and the mining method is finally selected based on the fuzzy multiple attribute decision theory to improve the mining method optimization Scientific. The subjective and objective combination weight method is used to determine the weight of each influencing factor of mining method, which makes the determination of weight more reasonable and increases the accuracy of the optimal result. The optimal mining method for the underground mining from Nanfen Iron Mine is the pillarless caving method. According to the expert opinion of the mining engineering design of the Nanfen iron ore from open pit to underground mining, the mining method selected in this paper is technically reliable and economically reasonable and can be applied in actual production.