併合二維、三維地電阻影像法及透地雷達法應用於管線及估計電石渣總量上之研究; A study of prospective pipe location and estimated amount of carbide by multiple resistivity imaging method and ground penetrating radar

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题名:	併合二維、三維地電阻影像法及透地雷達法應用於管線及估計電石渣總量上之研究;A study of prospective pipe location and estimated amount of carbide by multiple resistivity imaging method and ground penetrating radar
作者:	段偉宗;Wei-Chong Duan
贡献者:	地球物理研究所
关键词:	三維地電阻影像;透地雷達;管線;電石渣;二維直流電阻;three-dimensional resistivity image profiling;ground penetrating radar;pipe;waste of carbide;two-dimensional direct current resistivity
日期:	2000-07-18
上传时间:	2009-09-22 09:53:12 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	本論文利用透地雷達法及二維的地電阻影像法來與三維地電阻影像法做管線定位的比對；電石渣測區以二維地電阻影像法作殘渣量估算，最後結果與以鑽井資料估算出之量作比對。研究結果可以獲得以下幾點結論：一?在管線定位上，三維地電阻影像法比二維地電阻影像法效果要好，雖然三維地電阻影像剖面與透地雷達剖面對地下管線偵測約相當。但在深度之解析度，透地雷達法優於地電阻影像法。二?三維地電阻影像法對異常體在垂直和水平切面圖有良好的解析，故對管線的定位可較準確。三?Sting R1和Mcohm 21於施測上之比較，使用Sting R1比使用Mcohm 21少了2/5的記錄時間；在逆推軟體的部份，ElecPROF比Res2dinv需要更多的時間，在地電阻影像法的施測上，Sting R1結合Res2dinv較使用其他的儀器與軟體的組合為好。四?地電阻影像法對於電石渣的探測有相當好的效果，可明顯的分出兩個電性地層，上層電石渣電阻為7 ohm-m，厚度介於在1至5 m之間。五?地電阻影像法配合井資料的施測結果，所計算出來的體積，與實際鑽孔所算出來的體積，相差約在3%以內。故使用地電阻影像法有助於電石渣的描繪。 The aim of this study is to compare the results of locating the pipes using two-dimensional resistivity image profiling (2-D RIP), ground penetrating radar (GPR) and three-dimensional (3-D) RIP. In addition, evaluated the amount of buried waste of carbide by using a 2-D RIP survey was also being studied. The final result was compared with that of borehole data. Several conclusions can be drawn as follows: 1. Locating a pipe using 3-D RIP method seems better than that of 2-D RIP method. Both 3-D RIP and GPR are well be used to locate pipes. However, the resolution of GPR is superior to that of 3-D RIP, especially for the accuracy of the depth estimation. 2. 3-D RIP has the advantage of analyzing the anomalies from both vertical and horizontal slices. Therefore, the pipes can be located with great accuracy. 3. The performance of RIP survey using the Sting R1 is comparable with that of Mcohm 21. However, using the Sting R1 has less a 2/5 record time then Mcohm 21. In generating an inversion profile, using ElecPROF software needs more time then that of Res2dinv. Therefore, combining the Sting R1 sounding with Res2dinv interpreting in a RIP survey may be more efficiency than that of other combination. 4. RIP method is suitable for detecting carbide. Two-layer resistivity model can be recognized in the study area. The top carbide layer has a resistivity of 7 ohm-m with a thickness ranged from 1 to 5 m. 5. Combining the RIP method with few borehole data, the volume and the amount of carbide can be evaluated. The difference between the final result and that of evaluating from borehole data is around 3 %. Thus the advantage of mapping carbide using RIP method is obvious.
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