【摘要】：為了保證城市的可持續(xù)發(fā)展，實(shí)現(xiàn)城市地下空間的合理開發(fā)和利用，而開展的城市地質(zhì)信息數(shù)字化，城市地下空間三維模型的構(gòu)建，已成為當(dāng)今三維建模在工程領(lǐng)域內(nèi)應(yīng)用的熱點(diǎn)。本文針對(duì)石家莊工程地質(zhì)的特點(diǎn)，以鉆孔-剖面的層狀地質(zhì)體交互式建模方法為依據(jù)，提出了一種有效的多層DEM面模型，采用改進(jìn)的Delaunay三角剖分的方法生成主TIN面，將主TIN模板沿用到所有地層大大簡化了三維地質(zhì)體之間復(fù)雜的拓?fù)潢P(guān)系，利用地層層面數(shù)據(jù)進(jìn)行空間插值實(shí)現(xiàn)地層分界面的重構(gòu)，將嚴(yán)格按照土層巖性和地層時(shí)代分層生成各個(gè)地層分界面進(jìn)行縫合處理生成建模區(qū)域內(nèi)的地層實(shí)體模型，最后基于計(jì)算機(jī)圖形學(xué)基本理論，采用OpenGL技術(shù)對(duì)生成的多層DEM模型進(jìn)行渲染處理，實(shí)現(xiàn)工作區(qū)域內(nèi)地形和地層結(jié)構(gòu)的三維可視化操作。 根據(jù)曲面求交和地層分界面縫合的基本理論，系統(tǒng)可自動(dòng)生成地質(zhì)剖面圖。通過自動(dòng)生成的地質(zhì)剖面圖與原始CAD手繪地質(zhì)剖面圖進(jìn)行對(duì)比，給鉆孔數(shù)據(jù)庫進(jìn)行校正和糾錯(cuò)。本文還探討了如何解決系統(tǒng)自動(dòng)生成地質(zhì)剖面時(shí)出現(xiàn)的錯(cuò)誤，以及對(duì)各級(jí)土層進(jìn)行空間展布。這些都可以為地質(zhì)工作者進(jìn)行地質(zhì)評(píng)價(jià)和工程決策提供幫助。
[Abstract]:In order to ensure the sustainable development of the city and realize the rational development and utilization of the urban underground space, the digitization of urban geological information and the construction of the three-dimensional model of the urban underground space are carried out. Nowadays, 3D modeling has become a hot spot in the field of engineering. According to the characteristics of Shijiazhuang engineering geology, based on the interactive modeling method of layered geological body of drilling and section, an effective multi-layer DM surface model is proposed in this paper, and the improved Delaunay triangulation method is used to generate the main TIN surface. The main TIN template is used to all strata to greatly simplify the complex topological relationship between three-dimensional geological bodies, and the spatial interpolation of formation data is used to reconstruct the formation interface. The formation of formation entity models in the modeling area will be carried out strictly according to the lithology of the soil layer and the strata age. Finally, based on the basic theory of computer graphics, The multi-layer DEM model is rendered by OpenGL technology, and the 3D visualization of terrain and strata structure in the working area is realized. According to the basic theory of surface intersection and formation interface suture, the system can automatically generate geological profile. By comparing the automatically generated geological profile with the original CAD hand-drawn geological profile, the drilling database is corrected and corrected. This paper also discusses how to solve the errors in the automatic generation of geological profiles and the spatial distribution of soil layers at all levels. All these can provide help for geologists to carry out geological evaluation and engineering decision-making.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU984.113;TU19

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