One simply defines an AutoCAD UCS (user coordinate system) for the drift, then defines the floor elevation centre line of the drift using the AutoCAD PLINE command. The simplest technique for generating a drift or stope with a regular rectangular cross-section, and uniform height, is to use the AutoCAD PLINE command. PLINE, POLYLINE or ELLIPSE with WIDTH and THICKNESS This approach is the most general, but also the most complex to specify since the layout of both the floor and back of the drift must be defined along its length. If N is set equal to 3 or 4, these entities will come into Map3D as blocks. These 3DMESH's can be specified with any desired values of M and N. The recommended method of defining three-dimensional AutoCAD entities is to use the 3DMESH command, with AutoCAD THICKNESS and WIDTH set equal to zero. There are many ways of generating such objects from within AutoCAD as described below.
Closure of all surfaces is guaranteed when using this command since each three-dimensional entity defines a closed block. This type of entity generates blocks, which are structured identically to Map3D 3D FF blocks and thus can be passed directly through to Map3D. The most reliable method of generating Map3D compatible data is to use three-dimensional AutoCAD entities. Three-Dimensional Block Type AutoCAD Entities This format is useful for exchanging model data with other CAD software. DXF format is an AutoCAD drawing exchange file with the extension ".DXF".
0 kommentar(er)
