Mining CAD Drawing Software Based On AutoCAD Secondary Development

Although the use of Auto CAD technology has brought great benefits to mining companies, but in actual use it still exists many shortcomings. The geodetic coordinate system is adopted in mining enterprises drawing(Y axis is the direction that the X axis along the pointer rotate 90 degrees) which is different to Auto CAD coordinate system, and it can’t be transformed directly by Auto CAD coordinates conversion function. The use of azimuth in the geodetic coordinate system and Auto CAD traditional coordinate system is also different. There are a lot of drawings such as the grid division, coordinate labeling and coordinate calculation in mining drawings which will bring great workload to workers. The extensive cutting calculation between different drawings is more complex, manual operation is not only inefficient, slow, and error-prone, accuracy is not high. So it is necessary to carry out secondary development of Auto CAD to help drawing personnel for the operation and to improve the work efficiency and accuracy.Mine auxiliary drawing module establish the coordinate corresponding relationship between floor plan and profile plan in the geodetic coordinate system by adopting the operation of coordinate translation and rotation. And on this basis, to implement operations of mining drawings, such as drawing new, cutting and modification of editing work automatically.Mine drilling and mine roadway figures account for a large part in the mine drawings. There are a large number of measuring point coordinate data in mine drilling and mining roadway figures. It is a very heavy workload for cartographers to draw mine drilling and mine roadway figures according to datum. For reducing the workload of drawing personnel and improve the efficiency of drawing drawings the automatic mapping module was developed. Automatic mapping module is adopted by VBA code which is object-oriented development language. It is extremely convenient to set up all kinds of man-machine interactive interface by VBA. At the same time the Access database is used for data storage. And the mine drilling line, drilling histogram and roadway section drawing can be implemented automatically, and at the same time for report output. This will greatly improve the mapping efficiency and quality and reduce the burden of the cartographer.The development of this software can greatly improve the efficiency of drawing at the same time improve the accuracy of drawings, to make the drawing people liberated from tedious labor, reduce the staff working pressure, and facilitate the mining enterprises management and guidance of drawing information mining, bring greater economic benefits.