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The Genertion and Treatment of the Isoline in the Complicated Condition

Author: HuangShiFeng
Tutor: ChenXueGong
School: Central South University
Course: Applied Computer Technology
Keywords: Contour Constrained boundaries Fault Gridded Angle factor
CLC: TP399-C3
Type: Master's thesis
Year: 2008
Downloads: 245
Quote: 3
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Abstract


Contour map is very wide applications in petroleum exploration and development , mining , geological , geophysical , geochemical and meteorological fields of engineering and technical fields a graphical , is one of the important maps of many areas of the outcome , it a unified shape and number . In this thesis, the following two aspects : the generation and processing of the constraint boundary contour ; generate fault case contour . In this paper, based on the contour grid generation method has been improved . Add a special value of the distinction between the study area and study area grid cells in the process of meshing ; contour tracking process on the boundary where the grid cell processing , contour constrained boundaries draw ; Finally, using Bezier curves smooth contours . Data is scarce , and there is a complex fault fault block work area , due to the presence of faults , the study area is cut into separate fault block . This paper presents a new fault grid method based fault recovery ideological . According known tomographic gap information to create a grid of the vertical displacement of the ground level , the discrete sampling points within the study area is corrected to the position of the space in front of the fault generated to eliminate the impact of fault exists . Then the data interpolation restored to get a continuous the original stratigraphic grid data body . Then the sum of two grid data volume , considering fault effects resulting gridded data . In the whole process, the establishment of the vertical displacement of the grid is a key issue, be improved by adding an angle factor to adjust the interpolation contribution of each control point on the ground level in the fault at any point along , to achieve the vertical displacement of the grid by the inverse distance weighting method the establishment . Contour drawing process , the use of extrapolation to mesh with fault lines , complete fault case contour generation .

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