本文選題：南通市 + 活斷層�。� 參考：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：21世紀(jì),地球進入了地震多發(fā)期,先后發(fā)生的汶川地震、玉樹地震等特大地震給社會造成了極大的損失,進行地震危險性評價及時減少地震所造成的損失是當(dāng)前急需研究的課題。城市地震一般是由位于城市的地下隱伏活斷層錯動所引起的,因此活斷層探測對及時了解城市地下地質(zhì)情況,判斷是否存在地下隱伏斷裂,是否會引發(fā)直下型地震等具有非常重要的意義。活斷層探測主要包括控制性鉆孔探測、跨斷層鉆孔探測、淺層人工地震探測等工作,所獲取成果數(shù)據(jù)復(fù)雜多樣,針對活斷層探測項目數(shù)據(jù)進行有效管理并通過二維和三維方式展示,供工作人員高效查詢、查看、應(yīng)用是后期城市地震研究工作的重點和難點。本論文立足于南通市活斷層探測與地震危險性評價項目,主要研究工作如下:(1)對現(xiàn)有的活斷層探測數(shù)據(jù)庫研究做了深入的分析和總結(jié),在充分研究現(xiàn)有活斷層數(shù)據(jù)庫模型結(jié)構(gòu)和設(shè)計思路的基礎(chǔ)上,對現(xiàn)有活斷層數(shù)據(jù)庫模型設(shè)計做了一定改進,形成了南通市活斷層數(shù)據(jù)庫模型。(2)收集整理了南通市活斷層探測與地震危險性評價項目探測數(shù)據(jù)、收集資料、成果圖件等,將項目探測數(shù)據(jù)生成具有空間屬性的空間數(shù)據(jù),并使用統(tǒng)一編碼規(guī)則對其進行編碼統(tǒng)一管理。(3)完成了項目探測數(shù)據(jù)、收集資料、成果圖件等的數(shù)據(jù)庫入庫工作,形成了南通市活斷層數(shù)據(jù)庫。(4)對現(xiàn)有的三維地質(zhì)模型研究和鉆孔三維地質(zhì)建模方法進行了深入的研究、分析和總結(jié),選取MVS建模軟件對南通市活斷層探測鉆孔進行了三維地層模型構(gòu)建,形成了南通市活斷層三維地層模型。(5)基于南通市活斷層數(shù)據(jù)庫和南通市活斷層三維地層模型,利用Arc GIS Engine開發(fā)組件包和C#程序開發(fā)語言,完成出了南通市活斷層三維可視化系統(tǒng)。研究構(gòu)建了南通市活斷層地下三維模型,并結(jié)合二維成果圖件,直觀地展示了南通市活斷層地下分布、走向、活動性和年代,降低了工作人員查詢、分析活斷層的工作量和難度,為城市地震危險性評價,并在此基礎(chǔ)上進行原有建筑抗震加固以及新建工程選址提供了一定的技術(shù)支撐。
[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.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P315;P628.4

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本文編號：1875230