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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/58676
標題: | 降雨入滲對於淺層地下水水位與水溫之研究 Investigation of precipitation infiltration effect on shallow groundwater level and temperature |
作者: | Ping-Feng Song 宋萍芬 |
指導教授: | 譚義績 |
關鍵字: | 降雨入滲,水溫,水位,SWAT,SHEMAT, Infiltration,Groundwater level,Temperature,SWAT,SHEMAT, |
出版年 : | 2014 |
學位: | 碩士 |
摘要: | 台灣因為地形關係,蘊含豐富的地熱資源,加上豐沛的雨量,讓台灣擁有豐富的溫泉資源。由於經濟快速發展,生活品質提升,重視休閒活動,使得國人對於溫泉的需求量增加,溫泉的資源逐漸面臨枯竭的問題,因此本研究利用降雨入滲探討對於水位與水溫是否會有明顯的影響。本研究探討礁溪溫泉區降雨入滲對地下水淺層水位與水溫的影響,採用SWAT模式建立入滲模式,並且利用SHEMAT模式建立地下水熱傳輸模式。SWAT分析過程中將會利用土地利用、土壤質地與氣象資料輸入SWAT,可得到地表入滲補注量,入滲補注資料配合水文地質參數設定於SHEMAT中,並輸入適當得熱參數,包括熱源位置、溫泉初始水溫分布等,進行溫泉水溫與水位之模擬。本研究模擬礁溪溫泉區時間從2011年7月份到2013年6月,發現抽水量最高發生在2011年12月,而最低發生於2011年8月份。比較山區側向補注與降雨入滲量可發現,兩者之數值差異頗大,這表示此處溫泉地下水之水量主要來自於山區之補注,雨量由正上方直接垂直入滲至溫泉區之水量則有限。本研究發現降雨入滲對於冷熱水交替之影響僅位於高程0-20公尺處,高程0公尺以下之水溫幾乎不受入滲之影響。 Taiwan is full of hot spring resources due to abundant geothermal resources and rainfall. However, because of rapid economic development, lift of life quality, and raising concern of recreation activities, the demand of hot spring has significantly increased which results in possible over-exploitation of hot spring resources. This research investigates the effect of rainfall induced infiltration on shallow groundwater level and temperature. SWAT and SHEMAT are employed to build the infiltration model and groundwater heat transportation model, respectively. During the SWAT modeling process, land use, soil type and weather data serve as input, then the surface infiltration and recharge can be simulated. The recharge from SWAT, along with the hydrogeological and heat parameters, such as heat source and initial water temperature, can all be set up in SHEMAT to simulate the water level and temperature of hot spring. The study area is Jiao Xi hot spring zone and the timeframe of simulation is from July, 2011, to June, 2013. The results shows that the highest pumping rate occurs in December, 2011, and the lowest in Auguest, 2011. By comparing the boundary inflow from the western mountain and the direct recharge above the hot spring zone, it is found that the main water source of the Jiao Xi hot spring zone is from the western mountain. In addition, the precipitation induced infiltration can only affect the cool-hot water exchange at the elevation of 0 to 20 meters. The water temperature below elevation of 0 meter is barely affected by the infiltration. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/58676 |
全文授權: | 有償授權 |
顯示於系所單位: | 生物環境系統工程學系 |
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