Key Solution to Coalmine Ventilation Network Graphics CAD

According to need of drawing standard and practical application, mine ventilation network graphics CAD has been developed for solving safety management for coal mine. It introduces key solution of mine ventilation network graphics CAD, such as drawing node and branch geometry, drawing ventilation facilities and other aspects. Firstly it gives functional need of ventilation system management to ventilation network graphics CAD. Then data structure has been put forward on its basis. According to constitutes of ventilation network and need of drawing, the critical graphics solution to realize drawing branches, nodes, ventilation facilities has been introduced detailedly. And key procedures of network graphic showing properties automatically and keeping real-time interaction with ventilation system analysis has been presented too. Finally application analysis of coalmine ventilation network graphics CAD is given.