平切图大坝地质三维建模及剖切分析

3D modeling and section cutting of stratum in dam area based on flat-cut graph

利用剖面图进行地质体建模因其复杂度很高,常常是利用CAD或类似的地质建模软件进行交互式的建模,因此非常耗时。本文以大坝地质平切图(剖面图的一种)为数据源,开发了一种"多段连接"的方法可以自动构建地质体的三维表面模型,以及一种"三次搜索法"用于模型剖切分析,并在实际项目中验证了本文方案的有效性。

Usually, 3D statum modeling uses interactive methods with CAD or other similar software, which is time-consuming and low accuracy. In this paper, it made a series of flat-cut graph of dam area as source data, to develop a ＂multi-connection＂ meth- od, which can create the 3D surface model of stratum, and a ＂three-times search＂ method, which can slice the model fast and accu- rately. Finally, a test was made and the result was good.