本文關(guān)鍵詞： 三維地質(zhì)建模 ArcGIS ModelBuilder 復(fù)雜地質(zhì)體 自動(dòng)建模　出處：《工程地質(zhì)學(xué)報(bào)》2017年02期 　論文類型：期刊論文

【摘要】：與傳統(tǒng)的二維(2D)地質(zhì)繪圖技術(shù)相比,三維地質(zhì)建模技術(shù)能夠更加直觀、立體地展現(xiàn)地下巖層的結(jié)構(gòu)和空間分布情況,在工程的規(guī)劃、設(shè)計(jì)、施工和風(fēng)險(xiǎn)評(píng)估等過(guò)程都具有重要的應(yīng)用價(jià)值。針對(duì)工程領(lǐng)域的建模對(duì)象往往涉及復(fù)雜地質(zhì)體,為實(shí)現(xiàn)模型的自動(dòng)構(gòu)建,本文提出一種基ArcGIS ModelBuilder的復(fù)雜地質(zhì)體自動(dòng)建模方法。首先,在ArcGIS平臺(tái)的支持下,以鉆孔數(shù)據(jù)和地質(zhì)剖面圖為數(shù)據(jù)源,采用面向?qū)ο缶幊蘌ython語(yǔ)言結(jié)合ArcPy包,通過(guò)編程實(shí)現(xiàn)鉆孔數(shù)據(jù)的自動(dòng)預(yù)處理;其次,組合ArcScan自動(dòng)矢量化和SkechUp人機(jī)交互對(duì)地質(zhì)剖面進(jìn)行預(yù)處理,從中提取出斷裂3D矢量線,將它們集中存儲(chǔ)于GIS空間數(shù)據(jù)庫(kù);然后,利用ModelBuilder可視化建模工具,通過(guò)調(diào)用ArcToolbox的文件轉(zhuǎn)換和空間分析工具分別生成地層的三維實(shí)體模型和斷裂的三維表面模型,從而實(shí)現(xiàn)復(fù)雜地質(zhì)體自動(dòng)建模;進(jìn)一步,通過(guò)矢量化切割、剖面和開(kāi)挖多邊形作為T(mén)IN拉伸擴(kuò)展工具的輸入,并結(jié)合ArcScene實(shí)現(xiàn)模型多種形式的可視化。最后,采用南京仙林地區(qū)三維地質(zhì)調(diào)查項(xiàng)目獲取的鉆孔數(shù)據(jù)進(jìn)行了建模實(shí)驗(yàn),建模結(jié)果表明:該方法具有準(zhǔn)確、快速和自動(dòng)化的優(yōu)勢(shì),可為大范圍、大批量地質(zhì)建模提供可靠的技術(shù)方案。
[Abstract]:Compared with the traditional 2D geological mapping technology, 3D geological modeling technology can show the structure and spatial distribution of underground strata more intuitively and stereoscopically, and can be used in engineering planning and design. The process of construction and risk assessment has important application value. The modeling object in engineering field often involves complex geological body, in order to realize the automatic construction of the model, This paper presents an automatic modeling method of complex geological bodies based on ArcGIS ModelBuilder. Firstly, with the support of ArcGIS platform and taking borehole data and geological profile as data sources, the paper adopts object-oriented Python language and ArcPy package. The automatic preprocessing of borehole data is realized by programming. Secondly, combining ArcScan automatic vectorization and SkechUp human-computer interaction to preprocess geological section, the fracture 3D vector lines are extracted from them, and they are stored in GIS spatial database. By using the ModelBuilder visual modeling tool, the 3D solid model of strata and the 3D surface model of fracture are generated by calling the file conversion and spatial analysis tools of ArcToolbox, respectively, so as to realize the automatic modeling of complex geological bodies. Through vectorization cutting, section and excavation polygon as the input of TIN extension tool, and combined with ArcScene to realize the visualization of various forms of the model. Finally, The modeling experiment is carried out by using the borehole data obtained from the 3D geological survey project in Xianlin area, Nanjing. The modeling results show that the method has the advantages of accuracy, rapidity and automation, and can be used in a wide range. Mass geological modeling provides reliable technical solutions.
【作者單位】： 淮陰師范學(xué)院城市與環(huán)境學(xué)院;南京師范大學(xué)地理科學(xué)學(xué)院;
【分類號(hào)】：P628.3

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