東港溪流域地面水與地下水資源調查研究

The Investigation Study of Surface and Ground Water Resources for Tungkang River Basin

詹景欽(Ching-Chin Chan)

指導教授 ： 丁澈士

國立屏東科技大學/工學院/土木工程系所/碩士(2014年)

https://doi.org/10.6346/NPUST.2014.00259

摘要

近年來地下水議題受到政府及人民所重視，而地下水與水質的關係密不可分，每當降雨時會使得地表造成漥蓄或地表逕流，以入滲的方式進入地表下的土壤中，未入滲之地表逕流的部分可能會經過民生、工業或是畜牧等用地，當中可能遭受各種人為污染。
本研究針對東港溪流域地下水水位、地面水及地下水水質進行探討，以了解該流域中地面水污染對地下水影響，並且利用地下水流向圖清楚明白地下水流向，藉由野外調查進行量測水質，了解流域內地面水及地下水是否有受到污染。
經研究成果顯示，東港溪沖洪積扇扇頂水位較高，反應幅度較高，除受水文地質之水力傳導係數k影響較大外，直接受降雨補注源有關；尤其雨季期五月至十月水位抬升明顯，十一月後降雨減少。
由流域中可發現上游往下游的水質逐漸變差，五溝橋及泗溝大橋附近則是以畜牧為主，水質易受畜牧廢水影響；鈺榮橋至東港大橋以養殖漁業為主，該河段水面漂浮含油氣泡。導電度調查結果，上游導電度約192μS/cm，中游導電度約419μS/cm，下游導電度約1449μS/cm，下游導電度最高數值可達3300μS/cm，而1000μS/cm以上屬於人口及產業活動集中地區。

關鍵字

地下水 ； 東港溪

並列摘要

In recent years, the issue on groundwater has been valued by government and the people. Groundwater is closely associated with water quality, so when it rains, surface depression storage or surface runoff may seep into the soil. Surface runoff that does not seep into the ground may pass through land for housing, industry or animal husbandry use which is polluted by man.
The study investigates groundwater level, surface level and groundwater quality of Tungkang River to find out the influence of pollution on surface water around the area on groundwater and make clear the groundwater flow direction through groundwater flow direction map. In addition, it through field survey measures water quality to know if the surface water and the groundwater around the area are polluted.
According to the study result, the apex of the alluvial fan of Tungkang River shows higher water level and greater range of reaction. Being highly affected by the hydraulic conductivity of hydrogeology k, it is directly related to rainfall recharge. In particular, the water level during the rainy season from May to October increases remarkably and rainfall decreases after November.
It is found the water quality from upstream to downstream around the area gradually deteriorates. The reach near Wukou Bridge and Szukou Bridge is mainly for animal husbandry use, so the water quality is likely to be affected by the waste water of the said industry. The reach surrounding Yurong Bridge and Tungkang Bridge is for aquaculture use, and oily bubbles float on water. The survey of electric conductivity brings the result below: upstream electric conductivity of 192μS/cm, midstream electric conductivity of 419μS/cm and downstream electric conductivity of 1449μS/cm. The maximum of the downstream electric conductivity reaches 3300μS/cm. The conductivity of over 1000μS/cm indicates concentration of people and industrial activity.

並列關鍵字

groundwater ； Tungkang River

參考文獻

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