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論文中文名稱:透地雷達應用於地下輕–非水相液體污染探測之研究 [以論文名稱查詢館藏系統]
論文英文名稱:The Research on the Application of Ground-Penetrating Radar in Underground LNAPL Contamination [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
中文姓名:彭騰衝
英文姓名:Teng-Chong Peng
研究生學號:94428052
學位類別:碩士
語文別:中文
口試日期:2007-07-07
論文頁數:79
指導教授中文名:陳水龍
口試委員中文名:陳立憲;李焜發;蔡道賜
中文關鍵詞:透地雷達非破壞檢測地下污染輕-非水相液體影像處理
英文關鍵詞:Groun-Penetrating RadarNondestructive SurveyingUnderground ContaminationLight Non-Aqueous Phase LiquidImage Processing
論文中文摘要:常見的地下有機溶液污染,皆屬輕-非水相液體(Light Non-Aqueous Phase Liquid,LNAPL),其易隨雨水和地下水而逐漸擴散,因此等到有所察覺,該污染已十分嚴重。但傳統的破壞性檢測(destructive surveying)不易確切探知地下污染範圍,因此,一些非破壞檢測(non-destructive surveying)逐漸被應用與研究,透地雷達(ground-penetrating radar, GPR)即是其中之一。GPR乃利用不同物質對電磁波不同之穿透與反射特性,探求地下土層中之地物特徵。
本論文以嘉義縣水上鄉之現地污染為分析案例,參考地文資料與地理條件規劃出GPR測線進行施測,參考文獻中之污染特性與電性特徵,進行透地雷達施測,取透地雷達結果與地電阻進行比對,證明GPR探測LNAPL之可行性;描繪出污染擴散區域後,參照地下水位監測與鑽探報告結果,驗證GPR探測之準確性;最後,結合初步之Matlab影像處理,利用軟體劃分出污染程度,以此降低GPR對人為辨識之依賴。
研究結果證實,GPR確實能探測LNAPL之存在與範圍,且其結果頗為吻合,而初步結合影像處理之成果亦是可行,證實了GPR結合影像處理確有其發展潛力。
論文英文摘要:The common underground organic solution pollutions are mostly the results of Light Non-Aqueous Phase Liquid (LNAPL), whose nature allows the dispersion with surface runoff and groundwater. Therefore, such pollutions are seldom detected until it is too late. However, the traditional destructive surveying techniques are unable to provide an accurate detection of the extent of LNAPL. Thus, several non-destructive surveying methods are extensively studied and applied, while one of them is the ground-penetrating radar (GPR). GPR explores the anomalies and formation in the underground geology by taking the advantage of the capabilities of penetration and reflection in different materials to electromagnetic waves.
In this study, a pollution site at Shui-Shan, Chiayi County is introduced for the analysis. By studying historic geologic information and geographic conditions, the GPR profiles are plotted for measurement. The measurement using GPR is conducted by consulting the characteristics of pollution and electricity. The results are compared with those from resistivity surveys to verify the feasibility of using GPR for underground pollution survey. The accuracy of GPR survey is verified by comparing groundwater table monitoring results and bore logs after the extent of pollution is plotted. Finally, the program Matlab is used for preliminary image processing, and the levels of pollution are classified with applicable software in order to minimize human identification and intervention in GPR results.
The result of study shows that GPR does display the capability to detect the existence and extent of LNAPL, and the results are relatively accurate. In addition, the preliminary combination of image processing gives an encouraging result. It is proven that the combination of GPR and image processing does demonstrate a promising future.
論文目次:摘 要 i
Abstract ii
誌 謝 iv
目 錄 v
表 目 錄 vii
圖 目 錄 viii
第一章 緒論 1
1.1 研究動機 1
1.2 研究目的與內容 2
第二章 文獻回顧 3
2.1 透地雷達發展史 3
2.2 透地雷達於污染檢測之應用 7
2.2.1 地下液態污染概述 7
2.2.2 LNAPL特性描述 9
2.2.3 LNAPL之GPR圖像特徵與處理 11
第三章 透地雷達施測原理及設定 15
3.1 透地雷達(GPR)施測原理 15
3.2 介質特性影響因素 16
3.3 GPR施測設定 19
3.3.1 現地資訊收集與勘察 20
3.3.2 施測參數設定 20
3.3.3 GPR的資料處理與圖像判釋 24
第四章 案例分析與結果 33
4.1儀器介紹與試驗步驟 33
4.1.1試驗設備 33
4.1.2 試驗步驟 34
4.2 案例場址介紹 36
4.2.1 地理位置 36
4.2.2 場址環境概述 38
4.3 實際案例分析 40
4.3.1 分析規劃 40
4.3.2 檔案處理 41
4.3.3 分析結果與圖像解釋 45
4.3.4 資料比對 56
4.4 MATLAB影像處理 67
4.4.1 Matlab簡介 67
4.4.2 GPR影像處理 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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論文全文使用權限:同意授權於2012-08-23起公開