中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
辛明禹1,刘振振2*,王炳文2,姜维1,杜晓东1,贾彦州1
Xin Mingyu1, Liu Zhenzhen2, Wang Bingwen2, Jiang Wei1, Du Xiaodong1, Jia Yanzhou1
矿产资源是人类发展中不可或缺的一部分,同时也是现代化经济体系中不可替代的产业。在复杂的工程地质条件下,顶板稳定性问题较为突出且依然是金属矿山开采亟须解决的安全问题。通过构建 Flac3D数值模拟计算模型对鑫泰金矿顶板稳定性进行分析,利用层次分析法获得稳定性影响因素权重,结合D-S证据理论对影响较大的因素进行综合评价。研究结果表明:减小矿柱间距和使用充填采矿法可降低矿柱应力大小、使采场顶板发生塑性破坏的范围得到有效减小,从而维持顶板稳定性;矿区勘查和顶板力学信息对顶板稳定性评价影响最大,因子层中,支护状况对顶板稳定性影响最大,地下水特征及结构面特征影响最小;通过D-S证据理论证明矿区顶板处于稳定状态。
Mineral resources are an indispensable part of human development and also an irreplaceable industryin the modern economic system. Under complex engineering geological conditions, roof stability issues are prominentand remain critical safety problems requiring solutions in metal mine mining. A Flac3D numerical simulation model wasestablished to analyze the roof stability of the Xintai Gold Mine. The analytic hierarchy process was used to determinethe weights of factors affecting stability, and the D-S evidence theory was employed for a comprehensive evaluation ofthe most significant factors. The research results show that reducing pillar spacing and using the backfill mining methodcan decrease pillar stress and effectively reduce the extent of plastic failure in the stope roof, thereby maintaining roofstability. Mining area exploration and roof’s mechanical information have the greatest impact on roof stability evaluation.Among the factor layer, the support condition has the most significant influence on roof stability, while groundwatercharacteristics and structural plane features have the least impact. The D-S evidence theory demonstrates that the mineroof is in a stable state.