CAJ | 학술논문

铁路数字化选线设计达到实用水平的关键是复杂地质区域的数字地质选线技术。本文采用插值 n次Bézier曲线和三次参数样条曲线分别实现不同类型地质对象在三维地质环境中的矢量化表达；采用CD T 构建方法建立地质对象约束T IN模型，基于纹理定位和影像纹理坐标计算方法，实现栅格解译影像的定位和表达；实现将铁路数字化三维选线的矢量数据、栅格数据一体化的三维地质环境建模方法。根据直观地质遥感解译影像，建立OBB包围盒算法，自动判断线路与地质对象的空间冲突。在三维地形环境的基础上，建立超地图模型，实现三维地质环境和三维地理信息的统一集成和应用。实例表明，本文的三维地质环境模型能够较好满足复杂地质区域的数字选线要求。
철로수자화선선설계체도실용수평적관건시복잡지질구역적수자지질선선기술。본문채용삽치 n차Bézier곡선화삼차삼수양조곡선분별실현불동류형지질대상재삼유지질배경중적시양화표체；채용CD T 구건방법건입지질대상약속T IN모형，기우문리정위화영상문리좌표계산방법，실현책격해역영상적정위화표체；실현장철로수자화삼유선선적시량수거、책격수거일체화적삼유지질배경건모방법。근거직관지질요감해역영상，건립OBB포위합산법，자동판단선로여지질대상적공간충돌。재삼유지형배경적기출상，건립초지도모형，실현삼유지질배경화삼유지리신식적통일집성화응용。실례표명，본문적삼유지질배경모형능구교호만족복잡지질구역적수자선선요구。
The key to achieve practical use of railway digital alignment and design is digital geological alignment technology in complex geological area .The paper achieved vectorization expression of different types of geolog‐ical objects in three‐dimensional geological environment by adapting N times’ interpolation of Bézier curve and cubic parametric spline curve .The constraint TIN models for geological object were established by using CDT construction method .The localization and expression of raster image interpretation were realized based on tex‐ture positioning and image texture coordinate calculation method .The modeling method of three‐dimensional geological environment was achieved by integrating vector data and raster data of 3D railway digital aligment . On the basis of intuitive geological remote sensing image interpretation ,oriented bounding box (OBB) algo‐rithm was established to determine the spatial conflict between railway line and geological objects automatical‐ly .The hyper‐map model of three‐dimensional terrain environment was established to achieve the unified inte‐gration and application of three‐dimensional geological environment and three‐dimensional geographic informa‐tion .The examples showed the model of three‐dimensional geological environment better met the requirements of the digital alignment in complex geological area .