缓倾斜极薄铁矿体采矿方法选择研究

摘要

Based on geological condition of gently inclined and extremely thin iron mine, Hamming distance method is used to choose the primary proposal of mining method; Then considering such mining factors as the safety of mining, economic and technical index, mining efficiency, environmental effect and so on, the model of the index system and analytical hierarchy process which affect mining method choice is established. Both the evaluation matrix among various levels and the weight matrix of different influence factors are also obtained by the AHP method; At last, the Fuzzy decision mathematics model is built. And due to the maximum membership grade principle, the optimal proposal is determined. The research result shows that longwall mining method with hydraulic pressure frame supporting capping rock is the optimal mining proposal for the gently inclined and extremely thin iron mine.%基于缓倾斜极薄类铁矿体的工程地质条件,利用Hamming距离法进行了采矿方法初选.在初选方案的基础上,综合考虑开采的安全性、经济技术指标、开采效率以及环境等因素,建立了影响采矿方法选择的指标体系和层次分析结构模型.利用层次分析法确定了各层次间的判断矩阵,而后得到了各因素的权重向量;最后建立模糊决策数学模型,根据最大隶属度原则,确定了最优方案.研究证明,液压护顶长壁法是开采缓倾斜极薄类铁矿床最优的采矿方法.