【作者】 鹿浩；

【导师】 罗周全；

【作者基本信息】 中南大学 ， 安全技术及工程， 2009， 硕士

【摘要】 如何以先进的采空区精密探测技术为手段,开展以采空区精密探测为基础的采空区安全分析、采场回采质量综合评价,复杂边界矿柱安全高效回采等相关技术的研究与应用,已经成为我国深井开采金属矿山所面临的重要研究课题。本文综合运用理论分析、现场探测、综合评价、数值模拟等方法,以采空区精密探测技术为基础,以矿业建模型软件Surpac及数值分析软件RFPA等工具为手段,紧密结合“采空区激光精密探测技术应用研究”大型工程科研课题,针对冬瓜山铜矿的具体工程实际,开展空区安全分析,采场回采质量评价指标体系建立及回采质量综合评价,复杂边界矿柱安全高效回采设计,以及矿柱回采过程数值模拟等方面的研究。运用空区激光精密探测系统CMS对冬瓜山铜矿采空区进行现场探测,以实测数据为基础,采用Surpac软件建立了采空区的三维可视化模型,准确获得了采空区的三维空间形态、实际边界等相关信息,以此为基础开展了采空区相关安全分析,包括采空区顶板巷道安全性分析、矿柱边界安全状况分析和空区变形动态监测安全分析等。以采空区实测三维模型为基础,运用Surpac软件对模型进行处理,计算获得了采场超挖量、欠挖量、存留矿量、贫化率与损失率等采场回采主要技术指标,建立起了冬瓜山铜矿采场回采质量评价技术指标体系,运用层次分析-模糊综合评价方法对采场回采质量进行了综合评价分析,为矿山优化回采方案,降低生产成本提供了重要的基础性依据。结合冬瓜山铜矿52-9~#矿柱的工程实际,以实际探测获取的采空区三维模型为基础,建立了具有复杂边界的矿柱三维可视化实体模型,通过对模型的剖切,准确获得了复杂边界矿柱剖面,设计了两套矿柱回采爆破方案,并对方案进行了对比分析,提出了推荐方案。运用数值分析软件RFPA对矿柱回采过程进行数值模拟,通过分析矿柱回采过程中周边充填体及围岩的应力应变状态,进一步验证了所提出的矿柱回采推荐方案的可行性。更多还原

【Abstract】 A large amount of cavities formed by the metal mineral resources underground mining is not only endangering mine’s life security, but also making the resource reclaims of sufficiency very difficult. Therefore, taking advanced cavity monitoring system as methods, carrying out the research and application of relevant technology based on the cavity monitoring system have already become a significant forward research topic confronted by our country metal mine safety in production.The paper synthetically applys many methods such as theoretical analysis, scene monitoring, comprehensive evaluation, program design, numerical simulation and so on, with the cavity monitoring system(CMS), adopting mining software such Surpac and finite element analysis software RFPA as the main methods. Combining the research projects "The study and application of the cavity monitoring technology", in allusion to Dongguashan Copper Mine specific project practice, and taking the cavity 3D model structure technology of CMS as basis, a lot of technology research include the safety analysis of cavity, the foundation of the stope mining quality evaluation index system and mining quality evaluation, mining safely and efficiently pillar in the complicated stope border and the numerical simulation of pillar mining process are carried out.With cavity monitoring system (CMS), plan and regular monitoring to cavity would be carried out in Dongguashan copper mine. Using Surpac software established visualization three-dimensional goaf model, accurate access to the mined-out area of three-dimensional space form, and the actual border and other related information as a basis for carrying out the relevant security goaf analysis, including the roof goaf roadway safety analysis, the security situation in the border pillar goaf deformation analysis and dynamic monitoring of the safety analysis. Master its deformation and analyze intuitively safety of cavity.Taking CMS as the methods of scene monitoring and cavity 3D data acquisition, we have carried out scene monitoring to 52th, 54th, 56th line, and total of 14 cavities of Dongguashan mining since the end of 2006, we could edit and process 3D data through the 3D modeling software Supac, and acquire some mining technology index including the amount of stope over-break and under- break, retention core, dilution and loss rate,and so on by design calculating, then taking this as basis, we founded the stope mining quality evaluation index, and made a weighted analysis of each index through hierachical analysis and fuzzy comprehensive evaluation method, achieved final evaluation results, and provided a reference to optimize mining program and reduce production cost.Combining with Donggua Shan Copper Mine practice, taking 52-9~# pillar between 52-8~#and 52-10~# as an example, we establish pillar solid model based on the actually acquired cavity model, and get pillar actual boundary section by solid cutting, propose two sets of pillar mining blasting design program, and make a comparative analysis, at the same time make comments on it.Use RFPA to simulate pillar mining process, through analysing the situation of the border rocks stress. To Validate the blue map of the pillar mining.更多还原