【作者】 邓俏；

【导师】 罗周全；

【作者基本信息】 中南大学 ， 安全技术及工程， 2011， 硕士

【摘要】 金属矿山采空区失稳不仅影响矿山正常的安全生产,而且对矿产资源的回收造成困难。因而,对采空区失稳进行分析,准确掌握采空区的失稳模式及相关信息是制定正确处理方案的重要基础,进行采空区失稳分析具有重要现实意义。本文针对冬瓜山铜矿采空区失稳的具体工程实际,综合运用现场探测、可视化建模、数值模拟等方法,以采空区精密探测技术为基础,采用矿业建模型软件Surpac及数值分析软件Flac3D等数字化工具,紧密结合“冬瓜山铜矿采空区三维精密探测技术研究”科研课题,开展冬瓜山铜矿采空区失稳分析及实测验证研究,主要研究内容如下：1、针对冬瓜山铜矿采空区的工程实际,运用CMS、Surpac等数字化工具,实现冬瓜山铜矿采空区失稳信息可视化获取,并进行采空区失稳垮塌对临近采场影响相关分析,为矿山准确掌握采空区失稳状况及相邻采场安全开采设计提供技术支持。2、采用Flac3D数值软件,分别在静力和动力条件下,对冬瓜山铜矿采空区的失稳进行数值分析,并用实测结果对数值分析结果进行验证,揭示冬瓜山铜矿采空区的失稳模式,为矿山开展采空区安全评价及治理提供技术支持。3、在对岩体力学参数的不确定性因素进行分析的基础上,针对冬瓜山铜矿采空区的工程实际,综合运用Flac3D、计算响应面法(RSM),研究形成基于Flac3D-RSM的采空区失稳概率计算方法,’并用实测结果对计算结果进行验证分析,为矿山采空区失稳破坏分析提供一种新的途径。4、针对冬瓜山铜矿大团山矿段-390m中段采空区垮塌导致巷道破坏的工程实际,采用采空区三维可视化技术,运用CMS、Surpac、CAD等数字化工具,构建了采空区及巷道的三维实体模型,获取采空区失稳致使巷道破坏的综合信息,并开展了相关安全可视化分析。木文紧密结合工程实践,综合运用采空区精密探测技术、三维建模技术、以及数值分析软件工具,开展冬瓜山铜矿采空区失稳分析及实测验证研究,对矿山采空区灾害预测分析和控制以及资源安全高效开采,具有重要的工程应用价值。更多还原

【Abstract】 Cavity instability in metal mine not only affect the safety in normal production of mine, but also makes the recovery of mineral resources inconvenient. Thus, to analyze the cavity instability and to grasp the instability modes of cavity and related information accurately provide a foundational base to formulate particular schemes. It is of great practical importance to analyze cavity instability.In view of the specific engineering conditions of cavity instability in Dongguashan Copper Mine, this paper, by the comprehensive application of such methods as spot detection, visual modeling, and numerical simulation, on basis of cavity precision detection, with the help of mine modeling software Surpac, numerical analysis software Flac3D, and other digital tools, analyzes and studies the cavity instability in Dongguashan Copper Mine closely combined with the research project—Study of Laser Monitoring Technology of Cavities in Dongguashan Copper Mine. The main content of this paper are as follows:(1) In view of the specific engineering conditions of the cavity in Dongguashan Copper Mine, the visualization of the cavity instability information can be realized through the cavity instability information visualization and analytic methods. At the same time, the impact of instability collapse in the cavity on surrounding mines is analyzed, which provides technical support for learning accurately about the conditions of cavity and carrying out safety design in surrounding mines.(2) Flac3D numerical software is used to carry out instability numerical analysis of the cavity, respectively in static and dynamic conditions. And the numerical results were verified by the measured results. Based on the above findings, the cavity instability models were established, which provides technical support for cavity safety assessment and management.(3) Based on the analysis of uncertainties of rock mass mechanical parameters, comprehensively using Flac3D and the Response Surface Methodology (RSM), the study of the formation of Flac3D-RSM-based cavity instability probability calculation methods are carried out. And the calculation result is verified by comparing with the measured result. It provides a new way for mine to analyze the cavity instability.(4) In view of the engineering practice of the old section of roadway damage caused by cavity instability in Dongguashan Copper Mine, using cavity three-dimensional visualization technology, CMS, Surpac, CAD and other digital tools to construct the three-dimensional solid models of cavity and roadway. The integrated information of roadway failure is obtained. The relevant security visual analyses are conducted.This paper combines engineering practice closely, comprehensively use the means of cavity sophisticated detection technology,3D modeling technology and numerical analysis tool, the study of cavity instability analysis and monitoring verification are carried out. The research results have important practical significance for mine on cavity disaster prediction and control, and safe, efficient exploitation resources.更多还原