摘要
根据工程岩体的特征,从三维构模的角度,在中国矿业大学(北京)岩土工程研究所研究工作的基础上将岩体的结构单元类型分成二大类四种:即层状的连续型非倒转岩体、非连续型(断裂)岩体及倒转褶皱岩体和非层状岩体(侵入岩体、喷出岩体等)。借助三维GIS的可视化技术与面向对象的构模方法,根据非层状岩体的空间几何特征及地质数据的特点,提出适合于非层状岩体的数据模型,采用断面构模技术实现非层状岩体三维构模。利用多条轮廓线之间的三维表面重构方法构建非层状岩体的表面模型,将多条轮廓线之间的表面重构问题转化为体数据中的等值面构造问题。进而形成非层状岩体的三维可视化构模技术。开发了三维可视化构模系统,并利用该系统所提供的构模技术实现了灵宝金矿侵入型岩体三维模型的构建。
Based on the work of Geotechnical Engineering Research Institute of CUMT (Beijing), the engineering rock masses are divided into two types and four sub types by their characteristics for 3D modeling, that is, stratified non-inverse continuous rock masses, discontinuous (faulted) rock masses, inverse folded rock masses and unstratified rock masses (intrusive rock masses, extrusive rock masses). According to geometric characteristics and geological data of unstratified rock masses, the suitable spatial data model of unstratified rock masses is put forward by means of GIS visual technique and corresponding modeling method. 3D modeling method of unstratified rock masses is established, in which section method is adopted. 3D reconstruction of a set of planar contours is used to create the surface model of unstratified rock masses. The problem of reconstruction of a set of planar contours is then translated into the problem of structuring equivalent surface of body data. Visual modeling system based on the modeling technique is developed, and this system is verified in the example of unstratified rock mass modeling in Lingbao gold mine.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第5期774-779,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目(50490270)
国家自然科学创新集体基金项目(50221402)
高等学校博士学科点专项科研基金
关键词
岩石力学
地理信息系统
岩体
三维
构模技术
空间数据结构
重构
Computer simulation
Geographic information systems
Image reconstruction
Three dimensional computer graphics
Visualization
