【作者】 孙青；

【导师】 郑永果；

【作者基本信息】 山东科技大学 ， 计算机应用技术， 2008， 硕士

【摘要】 沉陷地层三维可视化研究是煤矿开采沉陷模拟的重要研究内容,对于分析、预测开采沉陷有着重要的意义。本文将开采沉陷理论与三维可视化技术相结合,实现了沉陷地层的三维可视化。论文首先讨论了数字地形的建模方法,利用平面几何原理,研究了由平面离散点构成三角网的方法,给出了一种新的平面点集三角剖分算法,其时间复杂度为O(nlogn);其次根据开采沉陷理论,在OpenGL图形开发平台的基础上,利用采煤工作面各项参数、地质特征,根据采样点的预测下沉数据实现了沉陷地层的可视化;最后针对含断层地层的三维可视化建模做了研究,利用广义三棱柱的思想,给出了含单一断层、两断层相切、两断层相错切的地层三维建模方法。更多还原

【Abstract】 Study on three-dimensional stratum visualization of mining subsidence, which is an important research contents of coal mining subsidence simulation, has an important meaning for analysising and forecasting mining subsidence. This paper presents the realization on 3D stratum visualization of mining subsidence by combining the theory of mining subsidence and technology of 3D visualization. First, in the paper, the modeling method of digital terrain is described. A new algorithm for triangulation of planar point set has been put forward on the basis of the research on triangle net for scattered data points using the principle of planegeometry, and its time complexity is O(n log n); Secondly, 3D stratum visualization ofmining subsidence is realized by using the parameters of coal face, geological characteristics and the prediction data of mining subsidence, on the basis of OpenGL graph platform, according to the theory of mining subsidence; Finally, 3D visualization modeling of the stratum contains faults is studied. Based on the thought of generalized tri-prism, a method of 3D visualization modeling of the stratum contained one fault, two tangency faults and two opposite tangency faults is put forward in the paper.更多还原