【作者】 曾凌方；

【导师】 李夕兵；

【作者基本信息】 中南大学 ， 工程力学， 2008， 硕士

【摘要】 矿床三维模型是“数字矿山”的基础,是矿床的数字表征。随着“数字矿山”的提出,三维模型越来越被从事矿山管理和研究的人员所重视。金属矿床地下开采形成的大量采空区不仅危及矿山的安全,而且对资源的充分回收造成严重的困难。因此,以先进的空区探测系统为手段,开展以空区精密探测为基础的相关技术的研究与应用,已经成为我国金属矿山安全生产所面临的重大前沿研究课题。河南三道庄钼矿是大型矿床,不仅有可观的钼储量,而且在矿区范围内还有一定量的金、银等伴生金属。由于矿山原先采用的空场法采矿所留下的采场、硐室以及巷道成为露天开采时的地下空区,地下空区对矿山的生产带来严重的威胁。因此,地下空区的可视化对露天台阶的稳定性分析是至关重要的。本文通过对不同类型的三维建模软件的对比,选择澳大利亚Surpac MinxeGroup开发的Surpac Vision 5.1-F版软件作为三道庄矿三维建模平台。利用矿山提供的钻孔资料,选择Microsoft Access 2000数据库类型,运用Surpac软件系统,建立了矿体模型、露天坑模型、地表模型等。准确建立力学计算模型是岩土工程稳定性数值模拟研究的基础。采空区的实际三维形态和准确的空间位置是影响采空区稳定性数值模拟可靠性的重要因素。然而,在传统的采空区稳定性数值模拟中,往往将采空区的形态视为空区开挖设计时确定的规则形态,或者是利用人工的简化模型进行模拟,严重影响了数值模拟结果的可靠性。本文应用空区全自动激光探测系统（Cavity Auto scanning LaserSystem,简称C-ALS）,精确地获取了空区的三维形态和准确的空间位置,借助于Surpac建立起的地质模型,使空区模型和矿山整体模型耦合起来,并提出了一种空区稳定性数值模拟建模的Surpac和Flac^3D耦合方法,形成了基于实测的采空区稳定性数值模拟耦合新技术,有效地提高了采空区稳定性数值模拟结果的准确性和可靠性。更多还原

【Abstract】 Three-dimension models of deposit are the foundation of "digital mine" and the digital characterization of deposit. With the development of "digital mine", the researchers pay more and more attention to the three dimensional model.A large amount of cavities, formed by underground mining in the metal mineral resources, are not only endangering mine’s safety but also doing harm to reclaim the resource sufficiently. Therefore, the research and application, based on the Cavity Monitoring System, have become significant issues in the metal mines of our country.The Sandaozhuang mine in Henan province is a large deposit, in which there is a great deal of molybdenum, and there are some associated metals such as Au and Ag. The stopes, chambers and roadways, left behind by the original mines, have become underground goafs when the mines are open pit mining. And the underground goafs hazard the producing process badly. So it is very important for the open-air stage stability analysis to establish visualization of the underground goafs.The paper compares with the different types of three-dimensional modeling software. At last, I have selection Surpac Vision 5.1 F developed by Surpac Minex Group as the platform for the modeling of the Sandaozhuang mine. Based on the borehole data offered by the mine, the orebody model, Open pit model and surface model are established by the Microsoft Access 2000 and the Surpac software.An accurate model of the mechanics calculation is established is the foundation of numerical simulation study on rock and soil engineering stability. The actual 3D Shape and accurate spatial position of underground goafs are the important factors which affect the reliability of the numerical simulation of underground goafs stability. However, in the past, the shape of the cavity was usually taken as to be a regular one which is confirmed by the stope mining design, or even used a simple manual model in the process of the numerical simulation, which depressed the reliability of the numerical simulation results seriously. In this paper, The three-dimensional shape and the spatial location are obtained accurately by using Cavity Auto scanning Laser System, and the three-dimensional shape model of the cavity is established precisely by using the surpac software. Coupled cavity model and the all model of the mine build by surpac software, a kind of modeling method for numerical simulation on underground goafs stability by coupling Surpac and FLAC^3D is put forward. So, a new coupling technique of numerical simulation on underground goafs e stability based on cavity monitoring is formed, which improve the availability and reliability of the numerical simulation results effectively.更多还原