地下水觀測井井管腐蝕現況與改善-以臺灣西南地區為例

廖崇淵

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地下水觀測井井管腐蝕現況與改善-以臺灣西南地區為例

Corrosion Study of Groundwater Monitoring Well's Pipe-Using Southwest Taiwan as an Example

廖崇淵 , Masters　　Advisor：陳孝行　　

繁體中文

地下水；觀測井；腐蝕；腐蝕潛勢；井體攝影； Groundwater ； Monitoring well ； Corrosion

Abstract │ Reference (62) │ Altmetrics

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A borehole-camera-system was used to investigate the corrosion of groundwater well in Southwest Taiwan. Water Resources Agency (WRA) constructed groundwater monitoring wells for observing hydrogeology, water level, water quality and other information of groundwater. The corrosion and scale of wells were related to soil, groundwater and other factors. The corrosion of pipe was caused by water quality and soil. The study used two different analysis methods. One is chemical analysis, and it is based on groundwater quality. The other is physical analysis which observed the pipe status through borehole-camera-system. The result of these two methods can reveal the corrosive situation of well pipe and as a data to improve the groundwater monitoring well pipe.
	The water quality of groundwater can be the indicator to know the potential corrosion. This study divided the corrosion status into five levels in order to understand the situation of inside pipe. “Three times the water " sampling method can present the water quality of aquifer, but cannot present the water quality of pipe water. "Three sections of water" sampling method can present the water quality of pipe water which is related with the pipe corrosion. 
	There are three suggestions from this study as following, so that the groundwater monitoring wells can work effectively:
	1. To choose "Three sections of the water" sampling method instead of "Three times the water" sampling method;
	2. To use UPVC pipe instead of metal pipe;
3. The welding technology for the pipe should be improved and the frequency of maintenance should be increased.

Reference ( 62 ) 〈TOP〉

1. Chia, Y.P., J.J.C. S. Wang, and C.W. Liu, Changes of groundwater level due to the 1999 Chi-Chi earthquake in the Choshui River alluvial fan in Taiwan. Bull. Seism. Soc. Am. 91,, 2001: p. 1062-1068.
連結：
2. Uhlig, H.H.a.R., R.W., Corrosion and Corrosion Control - An Introduction to Corrosion Science and Engineering. 1991, New York: John Wiley & Sons.
連結：
3. Zhang, X.G., Corrosion and Electrochemisry of Zinc. Plenum Press. 1996, New York.
連結：
5. S.C.Chung , C.C.H., H.C.Shih, The Inhibition of White Rust Formation on Hot Dip Galvanized Products. Journal of Chinese Corrosion Engineering, 1997. Vol.11: p. No.1,p8~14.
連結：
6. G.Dauhin, et al., Pitting Initiation on Stainless Steels : Electrochemical and Micro-graphic Aspects. 1985. corrosion: p. p.533.
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