喇嘛苏外围详查区铜矿体三维地质建模与储量估算

发布时间：2018-01-06 00:11

本文关键词：喇嘛苏外围详查区铜矿体三维地质建模与储量估算　出处：《新疆大学》2017年硕士论文　论文类型：学位论文

【摘要】：自二十世纪七十年代,三维建模概念提出以来,其理论基础是将现实世界的实物通过数据转换为模拟实体,并在计算机上展示的多维空间实体。在地质行业,将三维建模应用到地层、岩体、矿体等地质体三维模型的构建技术已经相对成熟,能够直观形象的展示地质体的形态、产状,从而可以进行更为详尽的矿体地质研究。本文将ArcGIS软件作为新疆博乐市喇嘛苏外围铜矿的矿体三维建模平台,全面系统整理原始地质编录资料及MapGIS的图件数据,并将其转换、保存在地理空间数据库中。在矿体三维建模过程中,首先于ArcMap获取TIN模型,经渲染后得到研究区表面的DEM数据,其次在ArcScene中应用DEM数据叠加钻孔数据、研究区道路、采样点。在研究区工程布署可视化三维显示条件下,通过ArcScene Cu品位值插值构建矿体的上下表面模型,应用两个TIN之间的拉伸模块,获取带有品位值的矿体三维可视化模型,估算出矿体的储量/资源量,最终,同传统地质统计学方法进行对比验证。矿体三维模型使矿体形态多变、矿化复杂及工程控制不足的资源/储量估算工作更具可靠性。基于矿体三维建模的资源/储量估算不仅具有直观、简便的优点,而且减少了不可预测的误差,提高了估算精度,一定程度上是改革和发展传统矿产资源/储量估算的良好应用技术。
[Abstract]:Since 1970s, the concept of three-dimensional modeling has been put forward, its theoretical basis is to transform the real world objects into simulation entities through data, and display them on the computer in the geological field. Three-dimensional modeling has been applied to the formation, rock mass, orebody and other geological body 3D modeling technology has been relatively mature, can visually show the shape and occurrence of geological bodies. In this paper, the ArcGIS software is used as the 3D modeling platform of the ore body of Lamasu copper deposit in Bole, Xinjiang. The original geological cataloguing data and the map data of MapGIS are comprehensively and systematically arranged and converted into a geospatial database in the process of ore body 3D modeling. Firstly, the TIN model is obtained by ArcMap, and the DEM data of the study area surface are obtained after rendering. Secondly, the DEM data are used to stack the borehole data in ArcScene, and the road in the study area is obtained. Sampling points. Under the condition of visualization 3D display of engineering layout in the study area, the upper and lower surface model of ore body was constructed by interpolation of ArcScene Cu grade value, and the drawing module between two TIN was applied. The 3D visualization model of ore body with grade value is obtained, and the reserves / resources of ore body are estimated. Finally, compared with the traditional geostatistics method, the three-dimensional model of orebody makes the shape of orebody changeable. The estimation of resources / reserves based on 3D modeling of ore body has not only the advantages of intuitionistic and simple, but also reduces the unpredictable error. To a certain extent, it is a good applied technology to reform and develop the traditional mineral resources / reserves estimation.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P628;P624.7

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