【摘要】：山體邊坡可能引發(fā)滑坡、崩塌和泥石流等多種地質災害，尤其是公路沿線的邊坡對工程建設和運營帶來諸多不利因素和安全隱患。針對易發(fā)生災害的邊坡，地質工作者開展了監(jiān)測、防治、模擬等一系列研究工作，產生了大量寶貴的邊坡數(shù)據(jù)，如鉆孔數(shù)據(jù)、物探數(shù)據(jù)。在物聯(lián)網(wǎng)飛速發(fā)展的今天，，通過建立邊坡三維模型來有效的組織、管理和充分發(fā)揮這些數(shù)據(jù)的作用，使其能夠迅速、有效的被地質工作人員掌握應用，從而達到預防和減少邊坡地質災害的目的是目前一個重要研究課題。 本文圍繞邊坡三維模型的可視化及在Web客戶端剖分這一主題，開展了以下工作： （1）三維建模數(shù)據(jù)的獲取和處理。運用鉆孔分層處理方法對鉆孔數(shù)據(jù)進行分層處理，獲取不同地層的離散采樣點數(shù)據(jù)；編程實現(xiàn)對鉆探、物探獲取的CAD格式的鉆孔剖面圖和物探地質解釋剖面圖解析，獲得建模所需要的離散采樣點數(shù)據(jù)；對獲取的數(shù)據(jù)建立概念數(shù)據(jù)模型E-R模型并依據(jù)此模型建立數(shù)據(jù)二維表存儲于SQL Server2008中。 （2）邊坡三維建模及可視化。運用多層DEM建模方法對邊坡地質體進行建模。采用目前應用較為廣泛的Kriging（克里金）插值方法對采樣點插值建立各地層DEM；調用Balder3D引擎在silverlight平臺下對各地層DEM創(chuàng)建高度圖，構建邊坡三維地層框架；用基于最短對角線的地層縫合方法對地層兩兩縫合，建立邊坡三維模型。 （3）Web環(huán)境下邊坡三維模型的剖分。通過服務器端與客戶端的交互，獲取Web頁面中鼠標點擊拾取的點的三維坐標；采用兩點方法獲取任意方向的垂直剖面；用垂直剖面對邊坡模型分割求取剖面與模型中各地層的交點；對相鄰層地交點進行組合構建地層剖面框架，并對各地層面貼以對應的巖性紋理完成模型的剖分與剖面圖的展示。 文中系統(tǒng)詳細講述了邊坡三維建模的各個環(huán)節(jié)，實現(xiàn)了Web環(huán)境下邊坡模型的可視化與剖分。與傳統(tǒng)軟件平臺相比Web程序更靈活，更方便，更易于實現(xiàn)信息的共享。由于Web環(huán)境要涉及到服務器與瀏覽器的交互，在獲取點三維坐標及實現(xiàn)剖分階段又比傳統(tǒng)的軟件平臺建立的可視化模型的分析更困難，因而Web環(huán)境下的三維建模與剖分更具有難度和意義。
[Abstract]:Mountain slope may cause many geological disasters, such as landslide, collapse and debris flow, especially the slope along the highway will bring many unfavorable factors and hidden dangers to the construction and operation of the project. For the slope prone to disasters, geologists have carried out a series of research work, such as monitoring, prevention and control, simulation and so on, which has produced a large number of valuable slope data, such as drilling data, geophysical data. In the rapid development of the Internet of things today, through the establishment of a three-dimensional slope model to effectively organize, manage and give full play to the role of these data, so that it can be quickly, effectively grasped by the geological staff application, Therefore, to prevent and reduce the slope geological hazard is an important research topic at present. This paper focuses on the visualization of 3D model of slope and the subdivision of 3D model in Web client. The main works are as follows: (1) acquisition and processing of 3D modeling data. Using the method of drilling stratification to process the borehole data, the discrete sampling point data of different strata are obtained, and the drilling section map and geophysical interpretation section map in CAD format obtained by drilling and geophysical exploration are analyzed by programming. The discrete sampling point data needed for modeling are obtained, and the conceptual data model E-R model is established for the obtained data. According to this model, the two-dimensional data table is established and stored in SQL Server2008. (2) the slope 3D modeling and visualization. The multi-layer DEM modeling method is used to model the slope geological body. The Kriging (Kriging) interpolation method which is widely used at present is used to interpolate the sampling points to set up the Balder3D engine to create the height map of the DEM of the different layers under the silverlight platform and to construct the three-dimensional stratigraphic framework of the slope. The formation suture method based on the shortest diagonal is used to suture the strata and the 3D model of the slope is established. (3) the subdivision of the 3D model of the slope under the environment of Web. Through the interaction between the server and the client, the 3D coordinates of the point picked up by mouse click in the Web page are obtained, and the vertical section in any direction is obtained by two methods. The vertical section is used to segment the slope model to obtain the intersection points between the profile and the various layers in the model, and the adjacent strata intersection points are combined to construct the stratigraphic profile frame, and the corresponding lithologic texture is attached to the various layers to complete the model division and section map display. In this paper, the three-dimensional modeling of slope is described in detail, and the visualization and division of slope model under Web environment are realized. Compared with traditional software platform, Web program is more flexible, more convenient and easier to share information. Because the Web environment involves the interaction between the server and the browser, it is more difficult to obtain the 3D coordinates of the points and realize the analysis of the visualization model than the traditional software platform. Therefore, it is more difficult and meaningful to model and subdivide 3D in Web environment.
【學位授予單位】：湖南科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP391.41;TP393.09

【共引文獻】

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本文編號：2200337