The Construction Of Three-Dimensional Geological Model Of The Zoujiashan & Julongan

With the development of three-dimensional modeling stage technology and the increasing demand for mineral resources,three-dimensional visualization of geological become three-dimensional geographic information systems and mine geology urgent study.In this thesis,it based the project " The regional geological survey in Tuoshang(G50E003008),Lugang(G50E004007),Le'an County in Jiangxi(G50E004008)"(item number: 1212011220248)and the "three-dimensional geological survey in Xiangshan volcanic basin"(item number: 12120114091701)by 1:50000,with the GOCAD as a platform,it is used to constructed the shallow(2000m)three-dimensional model with the combination of the drilling,geological prospecting profile map data,geological maps in t Zoujiashan & Julongan region.In this paper,the specific work and results of constructing the model are as follows:(1)This paper collects 14 CSAMT geological interpretations cross-sectional data which acquired by geophysical techniques,drilling data,contour line profile data of Xiangshan volcanic basin and exploration data in Zoujiashan & Julongan.Because of multi-source and complexity of data,this paper summarizes the methods of data processing and importing into the GOCAD software,and confirms that the methods are feasible.(2)According to the contour data,geological boundary trace cures and the information of the CSAMT geological interpretation cross-sectional,it summarizes the methods of constructing different geological surfaces(DEM surface,Fault surface,the Quaternary surface,the geological layer surface),and confirms that the method is feasible.(3)Process modeling technique is proposed to construct in this paper.And the process is that constructing the formation surface firstly,then constructing the 3D geological surface model based on the formation surface secondly,lastly the 3D geological solid model constructed by assigning the property and populating the model.It proposes the function of calculation and slicing in any direction to the 3D geological solid model and confirms that the methods are feasible.(4)For the tangential section between formation surface and the fault,it solves how to reflect the effect of fault and develops a process method and confirms that the method is feasible.(5)Doing some researches on the completed 3D geological solid model,and analyzing the relationship between each formation surface and the spatial structure and the factors of ore-controlling in the 3D geological model.