基于参数驱动的地下洞室三维建模研究  

Research on 3D Modeling of Underground Cavern Based on Parameter Driving

作　　者：魏振华[1] 刘志锋[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《中国农村水利水电》2010年第10期62-64,68,共4页China Rural Water and Hydropower

基　　金：国家"863"高科技计划项目(2008AA121600;2008AA121602)

摘　　要：通过研究地下洞室的形态及常用施工绘图技术,提出了参数驱动的地下洞室三维建模方法。该方法以数据库管理为依托,分析了常用施工洞室形态,提炼并建立其通用数学模型,将不同形态洞室进行参数化表达,使得施工洞室的管理由传统的文件数据结合拓扑结构管理转换为数据库参数管理,极大地降低了数据存储量,提高了用户修改洞室模型的效率;按照洞段的不同类型将洞室分割成若干洞段,采用改进的最短对角线法进行洞段三维建模,从而消除模型轮廓中心相距较远建模失败的问题;将洞段通过剪切及合并,形成完整的三维洞室模型。该方法最终成功应用到水电工程三维地质信息系统(GeoEngine),满足其不同形状地下洞室建模要求。This paper presents a 3D modeling method of underground cavern based on parameter driving,through studying the underground cavern configuration and common construction drawing technique.With the help of database management,the method analyzes common construction cavern configurations,refines and establishes their general mathematical models and parameterizes different cavern configurations.Thus,the management of construction cavern changes from the traditional mode,namely,combination of document data with topological structure to database parameterization mode reduces data storage and improves the user modifying efficiency of cavern model greatly.The method divides the cavern into several sections according to different section types and creates the cavern section models using the improved method of the shortest diagonal to solve the modeling failure problem when model contour centers are distant from each other.Then,the method forms the complete 3D cavern model by cutting and merging the cavern sections.Finally,the method is applied to the 3D geological information system of hydropower project called GeoEngine and meets the modeling requirements of different cavern configurations.

关 键 词：地下洞室 参数驱动 改进的最短对角线法 三维建模 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]