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利用有限的煤矿勘探数据,建立煤层底板的高精度等值线图对于煤矿巷道设计、煤层开采具有重要意义。采用两条技术要求来实现高精度等值线的绘制,一是采用Delaunay构网建立原始离散采样点的不规则三角网(Triangulated Irregular Network,TIN);二是对初始TIN模型进行网格加密,形成均匀分布的三角网格。网格加密过程中新插入点的属性值通过克里金(Kriging)插值方法获得,从而建立研究区域的高精度TIN模型。尝试采用一种新的等值线追踪算法,该算法简单直观。采用本文方法,在没有经过光滑处理的情况下,可以达到Sufer软件的绘制效果。
The use of limited coal exploration data, the establishment of high-precision contour map of seam floor for coal mine roadway design, coal mining is of great significance. Two technical requirements are used to achieve high-precision contouring. One is to create a Triangulated Irregular Network (TIN) using the original Delaunay network and the other is to encrypt the initial TIN model. A uniformly distributed triangular mesh is formed. The attribute value of the new insertion point during grid encryption is obtained by the Kriging interpolation method, so that a high-precision TIN model of the research area is established. Try a new contour tracing algorithm, which is simple and intuitive. Using this method, without smoothing, Sufer software can achieve the drawing effect.