The Program Of Visualization Of Mine Ventilation And Resistance Measurement Based On AutoCAD

This article is about how to use extended data written with ObjectARX to remember the attribute values of the tunnels, fans and constructions, read and modify the attribute values. The blocks of fan and construction are automatic established. Tie tunnels with fans and constructions. Write a computer program to settle the datum of resistance measurement under the environment of AutoCAD. If a tunnel has been measured, input the datum to the tunnel' s extended data. The program automatic finds the tunnels linking one by one and calculates the datum on the whole. In the program you also can get the resistance coefficient of a tunnel by finding in the tables.