低品位厚大矿体多中段协同开采步距计算方法  

Step Calculation Method for Multi-stage Synergistic Mining of Low-grade Large-thick Ore-body

作　　者：牛文静[1] 陈庆发[1] 刘严中 陈大鹏[1] 杨家彩[1] Niu Wenjing Chen Qingfa Liu Yanzhong Chen Dapeng Yang Jiacai(College of Resources and Metallurgy, Guangxi University, Nanning 530004, China School of Resources and Safety Engineering, Central South University, Changsha 410083, China)

机构地区：[1]广西大学资源与冶金学院,广西南宁530004 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《金属矿山》2016年第9期23-29,共7页Metal Mine

基　　金：广西科学研究与技术开发计划项目(编号:桂科攻1598017-5)

摘　　要：多中段开采模式能有效提高低品位厚大矿体生产能力,降低生产成本,研究多中段协同开采步距具有重要意义。从矿山工程系统出发,提出了多中段协同回采步距计算思路和方法。通过构建多中段协同开采步距计算体系,建立多中段协同开采综合模糊评价体系,利用层次模糊分析法,对影响多中段同时开采方案选择的各因素权重值进行了确定,评价了多中段同时开采方案,理论上确定了多中段协同开采方案和协同步距。以广西华锡集团铜坑矿锌铜矿体为工程背景,开展了协同步距的理论应用研究,确定了锌铜矿体二中段同时回采且上中段超前下中段2个采场步距的协同开采方案。该研究成果可为低品位厚大矿体多中段协同开采提供技术指导。Multi stage mining model can effectively improve the production capacity of low-grade large thick ore-body and reduce the costs. So it is significant to research the step distance of multi-stage synergistic mining. From the view of mine engi- neering systems, the ideas or methods for computing the step distance of multi-stage synergistic mining were proposed. The ex- ploited computing system was constructed to build the comprehensive fuzzy evaluation system of multi-stage synergistic mining. The hierarchical fuzzy analysis method was adopted to determine the weight value of each factor that influences the multi-stage synergistic mining. Through evaluating the multi-stage synergistic mining scheme, the scheme and its synergistic steps are de- termined in theory. With the copper zinc ore body in Tongkeng mine, Guangxi Huaxi Group as engineering background, the in- vestigation on the theory and application of the synergistic mining step distance showed that the second stage mining of copper zinc ore-body collaborating with the upper stage ahead two steps distance from the lower stage is the optimal. Research results provided technical guidance for the multi-stage synergistic mining of low-grade large thick ore-body.

关 键 词：多中段 协同开采 协同步距 低品位厚大矿体 综合模糊评价 

分 类 号：TD853.2[矿业工程—金属矿开采]