数值化三维地理模型及其在三峡工程中的应用

Three Dimensional Digitized Geographic Model and Its Use in TGP

三维地理模型是原始地形的计算机化的微缩景观，它是精确的，图上的任何要素都是可以度量、可以计算的，而且在CAD环境下，可以任意旋转、缩放，从任意方位、任意角度对原始地形、地貌进行研究。因此，在军事、科学探索以及工程规划、管理中具有十分重要的价值。为了探索三峡工程的施工规律，同时为了探索三维地理模型在工程中的应用，选择了永久船闸的部分区域建立三维地理模型。

The three dimensional geographic model is a computerized and miniaturized landscape from original topograph with a high precision. Any element can be measured and computed;and it can be rotated and shown in miniature wilfully with CAD;and original topograph and landform can be studied from any angle and in any direction. Therefore,it is of great value in minitary,scientific research,project planning and management. Partial sections of the permanent shiplock are selected for setting such a model in order to study the use of three dimentional geographic model.