應用三維地電阻方法評估污染物的傳輸及分佈之可行性先導研究

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Title:	應用三維地電阻方法評估污染物的傳輸及分佈之可行性先導研究 A Pilot Study of Using 3-D Geoelectric Resistivity Imaging Evaluating the Dstribution of Pollutants
Authors:	黃亦青 Yi-Ching Huang
Contributors:	李孫榮嘉南藥理科技大學：環境工程與科學系碩士班
Keywords:	三維地電阻地電阻剖面影像地球物理 rip 3-D Geoelectric Resistivity Imaging
Date:	2008
Issue Date:	2009-03-11 12:04:13 (UTC+8)
Abstract:	本實驗主要是探討三維地電阻方法(3-D Geoelectric Resistivity Method)的操作及應用，主要針對污染物的探測及了解其分布情形，研究分為(1)草地實驗場入滲測量，以及(2)泥火山現地測量，與(3)中尺度實驗槽體入滲連續監測，並運用此三個不同之試驗結果觀察比較，判斷三維地電阻方法在運用於污染物入滲的優缺點及需要改進的地方。草地實驗場入滲測量主要目的是為了了解三維地電阻方法運用在低電阻的污染物是否能夠準確觀察到其分佈情形，實驗中，以回字型電極陣列方法在草地實驗場中佈線，並於佈線位置的中央進行入滲，模擬定點定源的低電阻污染物入滲，實驗結果顯示，地表可見之構造物可以清楚呈現於三維影像之中，並且在入滲位置也出現一區電阻較週遭土壤電阻較低的區塊，但是對於探測深度確不盡理想，欲探測更深層的電阻則需要更大的展距，但面對佈線不容易的區域可能就無法測量。泥火山現地測量主要是驗證三維地電阻方法對於不同比例目標物及不同電阻率變化範圍之解析能力。由草地實驗場入滲測量之經驗，回字型陣列對於存在於之陣列中央之已知垂向地下構造物具有較佳之解析能力，實驗結果顯示，烏山頂泥火山的泥漿電阻大約分佈在2.55Ω-m ~62.92Ω-m之間，且在電阻率與前人實驗的數據互相吻合，也可由三維地電阻影像中清楚觀察到泥火山之地底泥漿通道的分佈情形，可是由於展距增加了、測量範圍變大了，加上現地的干擾情形並不清楚，而造成較於草地實驗場的實驗結果出現了比較多的雜訊。實驗槽體入滲連續監測是模擬一連續入滲的污染物，控制測量範圍所產生的干擾且使用較小的展距及測量範圍，並在槽體右半邊進行入滲，在入滲前與入滲後的測量發現無入滲的部分下降約55Ω‧m左右，但在有入滲的位置下降約400Ω-m左右，實驗結果發現，控制在小範圍的三維影像數據較無雜訊存在，且電阻率降低的位置與入滲位置符合，表示控制在小範圍的測量是可以有效降低雜訊。 This study concerns about 3-D Geoelectric Resistivity Method approach to resistance the operation and application of pollutants for the detection and understanding of their distribution. The study includes (1) grass field experiments infiltration measurement, and (2 ) Mud volcano experiments, and (3) in the sand box infiltration of continuous monitoring and the use of three different observation and comparison of test results to determine three-dimensional approach to resistance in the application of the advantages and disadvantages of pollutants infiltration and the need to improve Place. Infiltration grass field experiments measuring the main purpose is to understand three-dimensional methods used in resistance to low resistance of the pollutants can accurately observed its distribution. Infiltration by the grass field experiments measuring the experience, the font back to the array exists in the central array of vertical underground structures known to have a better analytical capacity. Infiltration of continuous monitoring of tank simulation is a continuous infiltration of pollutants generated by the control range of interference and the use of smaller and range from the exhibition and a slot in the right half of infiltration, infiltration of the regional observation In the resistance rate changes, to understand its three-dimensional profile approach to resistance in all kinds of different scales in the experiment of the problem and the need to improve the detection of pollutants in the experiment after the application.
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Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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