基于AutoCAD的弧段地质剖面精确绘制算法与实现
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摘要
当地质平面图中的剖面线包含弧段时,传统的基于AutoCAD开发的绘图工具绘制出的地质剖面图总是比实际剖面长度短一点。为解决这一问题,利用弧长公式、AutoCAD二次开发技术、出图标准,研究并实现了带弧段地质剖面图的精确绘制,并结合工程地质数据库,自动在剖面图上绘制勘察信息。应用效果表明:绘制出的弧段剖面图长度、地形高程、地质界线特征、相交剖面特征以及勘察点位置与平面图完全吻合,图上自动绘制的勘察信息与工程地质数据库数据一致。该技术提高了制图效率,提升了工作质量,可在多个平台的弧段地质剖面图绘制中推广。
When a section line contains arcs in a geological plane, the geological section drawn by the traditional drawing tool based on AutoCAD is always shorter than the actual section length. In order to solve the problem, the arc length formula, secondary development technology of AutoCAD, and the drawing standard are used to study and realize the accurate drawing of the geological profile with arc, and combined with engineering geological database, the investigation information is automatically drew on the profile. The application results show that the length of the arc profile, the terrain elevation, the geological boundary characteristics, the intersection profile characteristics, and the investigation point position all agree well with the plan graph. The automatically drawing survey information on the map is consistent with that in the engineering geological database. This technology can improve the drawing efficiency and the work quality, and can be popularized in multiple platforms about arc geological profile drawing.
When a section line contains arcs in a geological plane, the geological section drawn by the traditional drawing tool based on AutoCAD is always shorter than the actual section length. In order to solve the problem, the arc length formula, secondary development technology of AutoCAD, and the drawing standard are used to study and realize the accurate drawing of the geological profile with arc, and combined with engineering geological database, the investigation information is automatically drew on the profile. The application results show that the length of the arc profile, the terrain elevation, the geological boundary characteristics, the intersection profile characteristics, and the investigation point position all agree well with the plan graph. The automatically drawing survey information on the map is consistent with that in the engineering geological database. This technology can improve the drawing efficiency and the work quality, and can be popularized in multiple platforms about arc geological profile drawing.
引文
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[13] 唐春艳,王玉兰,彭继兵,等.地质剖面图自动绘制方法[J].世界地质,2004,23(4):348-353.
[14] 门桂珍,萨贤春,雷宝林.地质剖面图的计算机绘制技术[J].煤田地质与勘探,1995,23(1):34-37.
[15] 盖迎春,郭建文,冯敏.基于面向对象方法实现地质剖面图的自动生成[J].计算机应用研究,2005(5):132-134.
[2] 欧湘萍.工程地质岩性剖面图绘图软件的研制[J].武汉水运工程学院学报,1990,4(2):199-203.
[3] 陆娟.基于组件式GIS的水文地质剖面图自动生成方法研究[D].南京:南京师范大学,2003.
[4] 韩俊卿.基于GIS的地质剖面图自动生成研究[J].科技情报开发与经济,2007,17(31):203-204.
[5] 王丽芳,张宝一,陈国良,等.基于OpenGL的立体地质剖面图自动生成方法[J].资源环境与工程,2007,21(5):589-592.
[6] 王家伟,郭甲腾,张荣兵.含尖灭地层的地质剖面图自动生成与2D/3D绘制[J].沈阳建筑大学学报(自然科学版),2012,28(3):405-409.
[7] 陈嶷瑛,李文斌,武强,等.地质剖面图中复杂断层的自动生成方法[J].煤田地质与勘探,2010,38(5):7-12.
[8] Van Dam A Puk D.The history of computer graphics standards development[J].Computer Graphics,1998,32(1) :34-38.
[9] 朱莹,刘学军,陈锁忠.地质剖面自动绘制系统设计与实现[J].人民长江,2008,39(8):72-74.
[10] 张军强,吴冲龙,刘军旗.三峡库区灾害地质立体图数据库的设计与实现[J].人民长江,2012,43(7) :47-49.
[11] 钱莉莉,罗文行,杨红,等.一个实用的地质科学管理工具[J].人民长江,2015,46(19) :105-108.
[12] 杨丽.地质平/剖面图自动成图系统研究与实现[D].长沙:中南大学,2013.
[13] 唐春艳,王玉兰,彭继兵,等.地质剖面图自动绘制方法[J].世界地质,2004,23(4):348-353.
[14] 门桂珍,萨贤春,雷宝林.地质剖面图的计算机绘制技术[J].煤田地质与勘探,1995,23(1):34-37.
[15] 盖迎春,郭建文,冯敏.基于面向对象方法实现地质剖面图的自动生成[J].计算机应用研究,2005(5):132-134.