基于DSI算法和多源数据耦合的天津市中心城区工程地质三维模型的建立  

The establishment of a 3D engineering geological model for central Tianjin city——based on the DSI algorithm and multi-source data coupling

作　　者：张像源 王新春[2] 孟利山[3] 

机构地区：[1]天津市地质调查研究院,天津300191 [2]中国地质调查局发展研究中心,北京100037 [3]天津地质矿产研究所,天津300170

出　　处：《工程勘察》2013年第5期76-80,共5页Geotechnical Investigation & Surveying

摘　　要：本文探讨了如何利用空间插值方法和一定的建模理论方法构建三维地层模型,以解决离散且不连续的二维工程地质信息无法直观地表达地质体在纵向和横向变化问题。提出在TIN模型的支撑下,基于DSI插值算法,采用多源数据耦合简单层状地质体三维地质建模方法,充分考虑天津市中心城区工程地质地质条件,结合专业知识和计算机技术,构建了包括工程地质层、沉积相、岩性等信息的三维模型。该方法符合专业逻辑和天津地质特点实际,所建立的模型逼真地反映地下地质结构全貌,不但是数据表达的革新,而且为天津城市规划与工程建设选址服务、地下空间的利用等提供三维可视化的服务成为可能。This paper explores how to make use of spatial interpolation methods and some modeling methods to build a 3D stratum model to solve the problems of discrete and discontinuous two-dimensional engineering geological information which can not visually indicate the vertical and lateral changes in the geological body. With the support of TIN model, this 3D model is based on DSI interpolation algorithm, using the three-dimensional geological modeling method of multi-source coupled simple-layered geological body. Besides, by taking full account of the Tianjin geological condition and making full use of expertise and computer technology, the 3D model is built, which includes the engineering geological layers, sedimentary facies and lithology information. The established model corresponds with professional logic and the geological features of Tianjin. This model is supposed to vividly present a panorama of the underground geological structure, which not only represents an innovation of data show, but also makes possible the provision of 3D visual services for Tianjin urban planning, the selection of engineering construction site and utilization of underground space.

关 键 词：DSI算法 多源数据耦合 天津市 三维地质模型 工程地质 建立 

分 类 号：TU196[建筑科学—建筑理论] P283.4[天文地球—地图制图学与地理信息工程]