基于MapGis K9平台的天津市北部山区三维地质建模研究与应用

发布时间：2018-01-30 21:30

本文关键词： 天津市北部山区 MapGis K9 三维建模　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：天津市北部山区位于天津市平原区以北范围,面积755 km2,属蓟州区。目前,蓟州区依托天然的生态环境、特色的旅游资源和不断完善的旅游配套设施等优势,充分发挥其独特而深厚的的历史文化底蕴,建设生态新城,步入快速发展轨道。本区地貌主要以山地为主,地质条件复杂,基岩出露,断裂纵横交错,地质资料稀缺,存在发生地质灾害的隐患。摸清本区的地质构造,建立天津市北部山区基岩地质三维结构模型,能够为天津市北部地区深处的地质特征研究提供参考依据,并提供蓟州区地质灾害形成机理研究基础,对促进北部山区经济文化建设、加快相对落后地区经济社会发展具有一定意义。本研究课题以部市合作项目—《天津城市地质调查》成果为依托,全面收集工作区内的基岩地质图件、第四系地质图件、多源钻孔数据等资料,对北部山区地质环境条件进行系统分析研究,基于mapgis K9平台(天津市三维可视化城市地质信息管理与服务系统)三维地质建模功能,研究得出了适合于基岩出露山区复杂地质体的三维地质建模方案。在此基础上,编制钻孔数据库,建立全区数字高程模型并在GIS平台下绘制地质剖面,利用交叉剖面人机交互建模的方式搭建了天津市北部山区基岩地质三维结构模型,填补了蓟州区基岩模型空白。地层分布上涵盖第四系、中生界、古生界寒武系、青白口系、蓟县系、长城系等,所建立的三维地质体模型基本能反映研究区域内的基岩地层和断裂情况,充实了天津市基岩地质三维结构模型,为其他基岩出露山区三维地质建模方案的确立提供了参考和依据。
[Abstract]:The northern mountainous area of Tianjin is located in the north of Tianjin plain area, with an area of 755 km2, which belongs to Jizhou district. At present, Jizhou district relies on natural ecological environment. Characteristics of tourism resources and continuous improvement of tourism facilities and other advantages, give full play to its unique and profound historical and cultural heritage, the construction of a new ecological city, into a rapid development track. Geological conditions are complex, bedrock outcrop, faults crisscross, geological data are scarce, and there are hidden dangers of geological disasters. To find out the geological structure of this area, establish a three-dimensional geological structure model of bedrock in the northern mountainous area of Tianjin. It can provide a reference for the study of geological characteristics in the northern part of Tianjin, and provide the basis for the study of the formation mechanism of geological disasters in Jizhou, which will promote the economic and cultural construction of the northern mountainous areas. It is of certain significance to speed up the economic and social development in relatively backward areas. Based on the achievements of "Tianjin Urban Geological Survey", a project of cooperation between the Ministry and the city, the paper collects the geological maps of bedrock in the working area. Quaternary geological maps, multi-source borehole data and other data, the geological environment conditions in the northern mountainous areas were systematically analyzed and studied. 3D geological modeling function based on mapgis K9 platform (Tianjin 3D Visualized Urban Geological Information Management and Service system). A 3D geological modeling scheme suitable for complex geological bodies in outcropping areas of bedrock is obtained. On this basis, the drilling database is compiled, the digital elevation model of the whole area is established and the geological profile is drawn up on the platform of GIS. The 3D geological structure model of bedrock in the northern mountainous area of Tianjin is built by means of cross-section interactive modeling, which fills up the blank of bedrock model in Jizhou area. The stratigraphic distribution covers the Quaternary and Mesozoic. The 3D geological model of Paleozoic Cambrian, Qingbakou, Jixian and the Great Wall systems can basically reflect the bedrock strata and faults in the study area, and enrich the 3D geological structure model of bedrock in Tianjin. It provides a reference and basis for the establishment of three-dimensional geological modeling scheme in other bedrock outcrop areas.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208;P628

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