矿井二维通风立体图专用绘制软件的研制

为了在二维空间中更加直观地反映矿井通风巷道网络的空间拓扑结构，改变通风立体图绘制困难的现状，在深入研究双线巷道元素和投影原理的基础上，结合二次开发技术，提出了在AutoCAD平台下采用“改进的真双线法”及“闭合多段线填充法”实现二维通风立体图自动绘制的机制，着重分析了该机制的实现原理及利用基于.Net API的AutoCAD二次开发技术实现模块功能的具体流程。通过实践应用证明，提出的新算法在巷道内消隐和由双线平面图自动拓展成立体图的过程中大幅度减少了计算量，解决了传统算法存在的问题和不足。

Development of Special Drawing Software for Mine Two-dimensional Ventilation Stereogram

To correctly identify the spatial layer relationship of roadway and reflect the real-time status of mine ventilation truely and dynamically，based on the in-depth study of all kinds of drawing algorithms and elements of double-line roadway，the technology of automatic drawing two-dimensional ventilation stereogram by “Improved real double-line method” and “Colosed-polyline-hatch method ” or “ lineweight method” are put forward. The principle of two-dimensional ventilation stereogram automatic drawing and the process of using secondary development of AutoCAD based on C# to realize the function of this module are emphasized. The practical application proves that the new algorithm greatly reduces the amount of computation in one-roadway blanking and system diagram expanding into two-dimensional ventilation stereogram，and removes the defects in conventional ones.