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中文摘要：
煤层地质体几何形态复杂,其三维可视化对煤炭开采有着重要的现实意义。针对煤层层状特点,提出在地理系新系统（GIS）中使用面向对象的多面体数据结构实现煤层的三维可视化。该方法在生成煤层底板和顶板不规则三角网（TIN）的基础上,通过对其进行拉伸闭合,实现三维空间实体模型的构建。模型支持6种集合运算,可进行三维空间分析。最后,采用此方法实现了我国某煤矿主采煤层的三维可视化及工程开挖,验证了其可行性。
英文摘要：
The geometric shape of coal seam is very complex,so its 3D visualization has important practical significance for coal excavation.As for the layer characteristic,this paper proposed a method for coal seam 3D visualization based on object-oriented polyhedron data structure in Geographic Information System（GIS）.Through generating the triangulated irregular network（TIN） of coal seam floor and roof,the method build three dimensional model of spatial entities by stretching the generated TIN closed.The model supports six types of operations,and can carry out three-dimensional spatial analysis.As an example,3D visualization and underground openings for main mining seam of a coal mine in our country are carried into effect,and the theoretic feasibility was validated.
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SVM model for estimating the parameters of the probability-integral method of predicting mining subs
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