| 姓名 | 詹逸帆(Yi-Fan Chan) | 電子郵件信箱 | s9411613@mail.cyut.edu.tw | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 95學年第2學期 | |
| 論文名稱(中) | 應用透地雷達於台中舊河道地區探測之初步研究 | |||
| 論文名稱(英) | Preliminary Study on Old River Channel Investigation of GPR in Taichung | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 校內外都二年後公開 | |
| 論文語文/頁數 | 中文/148 | |||
| 摘要(中) |
台中都會區區內新舊河道密佈，對於舊河道地區之工址調查方面，現今大多採用鑽探之方法，不僅相當耗費人力與物力，並可能因鑽探密度不足而造成誤判。透地雷達屬於地球物理探測方法之ㄧ，具有高解析度之非破壞探測技術，國外已廣為利用於工址調查研究。本研究利用透地雷達探測法於上述舊河道地區之工址，藉由與現地試驗結果之比對，求得舊河道地區雷達波上的影像特徵，希望使卵礫石土層之舊河道地區工址探測能更為方便、快速、經濟。 透地雷達系統之探測試驗，採用100MHz及250MHz頻率之透地雷達，配合RAMAC Ground Vision解析軟體，在台中都會區舊河道地區進行現地試驗、影像蒐集；利用蒐集之試驗工址地質資料，比對兩種頻率之透地雷達參數設定、濾波處理方式及影像資料，設定舊河道地區最佳化儀控參數值，建立適當濾波處理方式與舊河道地區影像辨識方法。 由本研究結果顯示：(1)卵礫石土層區域之雷達影像呈現混亂反射訊號與相互堆疊較大波幅之折射波。(2)舊河道地區之雷達影像呈現連續平行之狀態或形成連續倒V字型為液化區域所在處。(3)雷達波波幅差異極大時即為舊河道地區土層與卵礫石土層之界線。(4)舊河道地區的地下水之介電常數非常高，故會產生強烈反射回波現象。(5)規劃測線時建議儘量採用田字形施作。(6)建議100MHz、250MHz天線之施測參數最佳化設定如表6-1及表6-2。 |
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| 摘要(英) | Old
river channel in the metropolis area of Taichung spreads widely.
The site investigation of the old river channel mostly adopted
boring method in the past. However, the waste of human and
material resources is considerable, and if the geology is
gravel, it will bring mistakes more easily. Ground Penetrating
Radar is a kind of non-destructive survey skill with high
resolution, which is widely applied to the site investigation
research abroad. This research explores the old river channel
investigation in site that use the method of Ground Penetrating
Radar, compared with result of experiment, to obtain the image
characteristic of the old river channel radar wave in the
channel, to hope that site detection of gravel deposits will be
more accurate, convenient, fast and economic. The detecting experiment of Ground Penetrating Radar system mainly selected with the frequency of 100MHz and 250MHz with the software of RAMAC Ground Vision. The in situ experiment, image collection and analysis in the old river channel of Taichung area are doing. Using the trial site geology data compare to two frequencies of GPR, parameters filter processing and image data. Finding the old river channel optimization control parameters, building up a filter processing and the old river channel image analysis method. Research results show that: (1) The radar image of the gravel deposits presents the confusion signal and larger refraction amplitude. (2) The radar image of the old river channel presents the consecution parallel appearance and continuously inverted V matrix at liquefy hole place. (3) It will be a boundary of the liquefaction soils and gravel deposits when the grant difference of amplitude. (4) The dielectric parameter of the groundwater is very high. It will produce strongly reflect waves. (5) The“田”type of survey line is strongey suggested. (6) The optimization parameter settings of 100 MHz and 250 MHz antenna such as table 6-1 and table 6-2 are suggested. |
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| 口試日期 | 2007-06-30 | 繳交日期 | 2007-08-22 | |