Based On Occurrence Data Of Ground Surface Simulation

With the rapid development of computer graphics technology and the constantimprovement of the theory of linear geostatistics,more and more geological engineerhope to application of three-dimensional geological visualization system of geologicalwork in software, the simulation of3D surface formation is an important part of3Dgeological modeling, which is convenient for geological engineers for modeling, dataanalysis and information management in the largely.At present, the process of3Dgeological modeling is to rely on a lot of seismic data, drilling data, these data aredifficult to obtain, in order to reduce the workload of geological survey and prospectingcost, improve the working efficiency of the geological survey, this paper proposes adipmeter data (based on3D coordinates, tendency, inclination angle of stratummodeling method), mainly from the actual investigation into the occurrence data, willeventually occurrence according to stratigraphic boundary classification, on the sameline of occurrence values are the occurrence of deduction, the deduction to obtain dataof3D stratum modeling. The main research contents are as followsThis paper first introduces linear geostatistics theory basis, basic concept, theclassification of the interpolation algorithm. According to the characteristics of theground surface interpolation algorithm and data types, the kriging interpolationalgorithm and the solution of the variational function are introduced. Modeling processand the kriging algorithm are given in detail. Considering the actual survey ofoccurrence data quantity is limited, the author puts forward a kind of attitude deductionmethod, with3d coordinate occurrence and orientation, Angle to build a3d planeequation, at a certain step length is derived according to the occurrence point closer tothe3d coordinate points, will push the performance of3d coordinate combined withoccurrence point, using kriging interpolation algorithm for simulation o fthree-dimensional ground surface.at the same time in order to be able to describe Stratigraphic trend line, in this paper,using the cubic spline interpolation algorithm, at occurrence of two-dimensionalcoordinates of control points, in order to, the direction of the tangent value of boundary conditions at various points in the two-dimensional plane structure occurrence trendline.Survey data in the data source for the China Geological Survey Bureau of TibetBangong Lake-Nu River metallogenic belt of Geology and mineral resources surveyproject, using Visual C++6, OpenGL open graphics library as the development tool,combined with the occurrence of inference method, developed a surface formation ofthree-dimensional visualization system, the system realizes the regional stratigraphicdata management,2D to3D stratum modeling, simulation, visualization of stratumsurface, formation data interactive editing functions.