(3) In the paper, the closed geological surface model based on GTP is described, and the corresponding data structure is defined. In addition, the algorithm on closed 3D-TIN geological model, which combines 3D stratum reconstruction principle, is deduced.
Based on the analysis of the source of modeling error,two approaches for error correction of 3D strata modeling from borehole data,called the cross-section method and the virtual borehole method,are presented.
The application of three dimension strata information system in Jinshandian mining will bring a revolution for national mining in dowse,designing,exploiation,safety supervising and scientific managing.
Because of the excellent identity of ActiveX, the constructed program can be used repeatedly, which provides a new advanced thought that functions of OpenGL are applied in computer three dimensional stratum visualization.