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姓名 趙奕然(YI-RAN-ZHAO)  查詢紙本館藏   畢業系所 應用地質研究所
論文名稱 利用LiDAR點雲及影像資料決定露頭節理結合面之研究
(Determining Joint Patches of Outcrop Discontinuities by LiDAR Point Cloud Data and Field Image)
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摘要(中) 影響岩體水流情況甚鉅的孔隙率和滲透率,主要由不連續面在岩體中之空間分布以及連通性所控制。不連續面幾何參數的採樣,一般使用測線採樣法或視窗採樣等人工測量方法。近年來發展光達儀器常作為地質調查工具,本研究目的為討論地面光達應用於露頭調查的可行性,提出了一套分析方法,比對現地調查與光達點雲資料(point cloud data)。現地資料的收集分成兩部分,第一是使用視窗採樣法,對選定的露頭進行了三個視窗的不連續面資料收集,共採樣71筆不連續面資料,包括位態(orientation)、軌跡長(fracture trace)、開口寬(aperture)等等之定量參數,其中位態這項參數,將作為分析點雲資料(point cloud data)的依據:第二部分是利用光達儀器(Zoller+Frohlich scanner)對露頭面做光達掃描(light detection and ranging),獲得露頭表面的點雲資料。點雲分析使用Split Engineering開發的Split -FX,判釋裂隙出露面的位置以及位態,再與視窗採樣資料作比對。本研究首先進行Split-FX分析參數的敏感度分析,再由影像資料中選取13處出露面作為分析依據,根據Split-FX點雲資分析方法,判釋此13處出露面之幾何面位置與位態,將所得位態與位置和現地調查結果作分析比對。結果顯示13處出露面皆於點雲資料中判釋出相近之幾何面,兩者的位態平均誤差為13°/7.46°(dip direction/dip),透過此分析結果,初步可認定光達掃描方法可應用於露頭調查工作,藉後續點雲資料分析方法可協助研究者分析現地不連續面特性。
摘要(英) The hydraulic parameters such as porosity and permeability in a rock are significantly controlled by the distribution of discontinuities in rock mass. Scanline or window samplings are the typical approaches for discontinuity samplings. Recent advances in LiDAR scanning techniques have become the useful tools for geological investigations. This study aims to evaluate the applicability of LiDAR technology in outcrop discontinuity investigations. The field investigations are divided into two different categories: the window sampling and light detection and ranging scan LiDAR. For the window sampling, this study collected 71 discontinuity data from three selected windows on an outcrop. These discontinuity parameters include orientations, fracture traces, and apertures. Split-Fx software developed by Split Engineering was employed to analyze the LiDAR point cloud data. A sensitivity analysis was first conducted to assess the impact of Split-Fx parameters on estimation results. Results of discontinuities from window and LiDAR samplings were compared based on the selected 13 discontinuities from the field images. The comparison results showed that the differences of orientation between LiDAR and window samplings is 13°/7.46°(dip direction/dip). Such result indicates that the LiDAR scanning can be a valuable technique for discontinuity surveys and parameters estimations.
關鍵字(中) ★ LiDAR
★ 不連續面
★ 點雲資料
★ 視窗採樣法
關鍵字(英)
論文目次 中文摘要 I
英文摘要 III
目錄 V
圖目錄 VII
表目錄 XI
符號說明 XII
第一章 緒論 1
1.1 研究背景與動機 1
1.2 文獻回顧 2
1.2.1 不連續面調查 2
1.2.2 光達相關研究 3
1.3 研究目的 8
1.4 研究流程 9
1.5 論文架構 11
第二章 研究設備與研究區域介紹 13
2.1 LiDAR儀器介紹 13
2.2 點雲分析軟體介紹 16
2.3 研究區域介紹 18
第三章 理論與方法 20
3.1 現地不連續面資料收集 20
3.2 LiDAR掃描流程 33
3.3 使用Split-FX軟體分析測試案例 37
3.4 裂隙建模理論 44
3.4.1 裂隙強度理論 44
第四章 結果與討論 47
4.1 現地調查資料分析 47
4.1.1 極點投影分析 47
4.1.2 裂隙強度分析結果 49
4.1.2 裂隙模型生成結果 49
4.2 出露面位置與位態分析結果 52
4.3 出露面粗糙度分析與敏感度分析結果 61
4.3.1 出露面粗糙度分析結果 61
4.3.2 網格與節理面單位大小敏感度分析結果 63
4.4 綜合討論 68
第五章 結論與建議 72
5.1 結論 72
5.2 建議 73
參考文獻 74
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指導教授 倪春發(CHUEN-FA-NI) 審核日期 2014-8-27
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