南通市活断层数据库与三维可视化系统

发布时间：2018-05-11 19:17

本文选题：南通市 + 活断层　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：21世纪,地球进入了地震多发期,先后发生的汶川地震、玉树地震等特大地震给社会造成了极大的损失,进行地震危险性评价及时减少地震所造成的损失是当前急需研究的课题。城市地震一般是由位于城市的地下隐伏活断层错动所引起的,因此活断层探测对及时了解城市地下地质情况,判断是否存在地下隐伏断裂,是否会引发直下型地震等具有非常重要的意义。活断层探测主要包括控制性钻孔探测、跨断层钻孔探测、浅层人工地震探测等工作,所获取成果数据复杂多样,针对活断层探测项目数据进行有效管理并通过二维和三维方式展示,供工作人员高效查询、查看、应用是后期城市地震研究工作的重点和难点。本论文立足于南通市活断层探测与地震危险性评价项目,主要研究工作如下:(1)对现有的活断层探测数据库研究做了深入的分析和总结,在充分研究现有活断层数据库模型结构和设计思路的基础上,对现有活断层数据库模型设计做了一定改进,形成了南通市活断层数据库模型。(2)收集整理了南通市活断层探测与地震危险性评价项目探测数据、收集资料、成果图件等,将项目探测数据生成具有空间属性的空间数据,并使用统一编码规则对其进行编码统一管理。(3)完成了项目探测数据、收集资料、成果图件等的数据库入库工作,形成了南通市活断层数据库。(4)对现有的三维地质模型研究和钻孔三维地质建模方法进行了深入的研究、分析和总结,选取MVS建模软件对南通市活断层探测钻孔进行了三维地层模型构建,形成了南通市活断层三维地层模型。(5)基于南通市活断层数据库和南通市活断层三维地层模型,利用Arc GIS Engine开发组件包和C#程序开发语言,完成出了南通市活断层三维可视化系统。研究构建了南通市活断层地下三维模型,并结合二维成果图件,直观地展示了南通市活断层地下分布、走向、活动性和年代,降低了工作人员查询、分析活断层的工作量和难度,为城市地震危险性评价,并在此基础上进行原有建筑抗震加固以及新建工程选址提供了一定的技术支撑。
[Abstract]:In the 21st century, the earth has entered an earthquake-prone period. The Wenchuan earthquake, the Yushu earthquake, and other major earthquakes have caused great losses to society. It is urgent to study how to reduce the damage caused by earthquake in time. Urban earthquakes are generally caused by the dislocation of underground active faults located in cities, so active fault detection can help us to understand the underground geological conditions in time and determine whether there are underground hidden faults. It is of great significance whether or not it will lead to a straight-down earthquake. Active fault detection mainly includes controlling borehole exploration, cross-fault borehole exploration, shallow artificial seismic exploration and so on. The obtained data are complex and diverse. The effective management of active fault detection project data and the display of the data in two and three dimensions are the key points and difficulties of the later urban seismic research work for the staff to inquire, view and apply efficiently. This paper is based on the active fault detection and seismic risk assessment project in Nantong City. The main research work is as follows: (1) the existing active fault detection database is deeply analyzed and summarized. On the basis of fully studying the existing active fault database model structure and design ideas, the existing active fault database model design has been improved. The active fault database model of Nantong city is formed. The active fault detection and seismic risk assessment project exploration data of Nantong city are collected and sorted out, the data are collected, the result maps are collected, and the project detection data are generated into spatial data with spatial attributes. And using the uniform coding rules to encode it, the database of detecting data, collecting data and drawing results are completed, and the database is put into the database, such as the data of project detection, the collection of data and the map of the result, and so on. The active fault database of Nantong City is formed. The existing 3D geological model research and borehole 3D geological modeling method are deeply studied, analyzed and summarized. The 3D stratigraphic model of active fault in Nantong City is constructed by using MVS modeling software. The 3D stratigraphic model of active fault in Nantong City is formed, which is based on the active fault database of Nantong city and the active fault 3D stratigraphic model of Nantong city. A 3D visualization system for active faults in Nantong City is developed by using Arc GIS Engine development package and C # programming language. The underground 3D model of the active fault in Nantong City is constructed, and combined with the 2D map, the underground distribution, strike, activity and age of the active fault in Nantong City are displayed intuitively, and the query of the staff is reduced. By analyzing the workload and difficulty of active faults, this paper provides some technical support for the evaluation of urban seismic risk, and on the basis of which, the seismic reinforcement of the original building and the site selection of the new construction are provided with certain technical support.
【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】：2015
【分类号】：P315;P628.4

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