The Application And Research Of Surface Mine Coal Bed Model Based On VBA With The Secondary Development Of AutoCAD

The technology of computer visualization and the principle and method of coal bed model are discussed in details .The author improves a method of the constrained Delaunay Triangle Network. Through using it, the model of strata is established. Then we use STP (Similar Tri-Prism) to construct visible modeling of three-dimensional coal bed. The powerful visual coal bed geological modeling system that is called Surface Mining Data Modeling System (SMDMS) is developed based on the drill data of NO.2 Baiyinhua Surface Mine. SMDMS consists of strata modeling constructing, 3D geology body modeling constructing, contours drawn, and sectional drawing done and reserves calculated. SMDMS is in the secondary development of AutoCAD by VBA (Visual Basic Application), the object-oriented program design language in the environment of Windows based on AutoCAD. The interface of SMDMS is normative and uniform, and the operability is great improved. Good results received in Baiyinhua surface mine shows that SMDMS is very practical and easy to operate and the coal bed geological model developed by SMDMS is accurate and reliable.