Data Mining for Additional Hydrogeologic Data and Application on Groundwater Resources Assessment in the Mountainous Region of Taiwan

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Project title

Code/計畫編號

MOST107-2116-M019-004

Translated Name/計畫中文名

額外水文地質資訊探勘研究與臺灣山區地下水資源潛能評估之應用

Project Coordinator/計畫主持人

Shih-Meng Hsu

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=12670923

Year

2018

Start date/計畫起

01-08-2018

Expected Completion/計畫迄

01-07-2019

Bugetid/研究經費

518千元

ResearchField/研究領域

地球科學

由於氣候變遷，乾旱發生的再現頻率與強度逐年增加，山區地下水資源探勘工作正試圖尋找可開發的水資源，以提升未來面臨缺水危機時之亢旱能力。目前探勘工作多以點狀調查為主，就工程開發觀點，如能獲得含水層線與面尺度、甚至三維空間之水力結構參數資料，更具參考價值。爰此，在有限調查經費資源下，為達成提供更多未來山區地下水資源開發所需關鍵資料之目的，有必要以資料探勘方式，對既有資料進行整合與分析，藉由揭露額外水文地質參數資訊，降低參數資料本身不確定性，並連帶提升與之連動地下水流分析模式之精度。本計畫擬規劃三年分期進行，第一年建立臺灣山區三種不同地層滲透性指標推估模式，應用於鑽孔內未施測水力試驗區段之透水係數補遺，進而獲得場址透水係數垂向上之分布變化；第二年蒐集既有水力試驗資料，進行鑽孔周遭裂隙網絡系統型態揭露研究，研究重點為取得地下水水流維度與岩層裂隙與基岩水力特性之關係。第三年則先進行場址地下水資源潛能延伸性辨識研究，最後再結合所有額外水文地質資訊揭露之研究成果，描繪場址地質構造空間分布、含水層水力特性與水力邊界條件等圖像，協助場址水力結構描述模型建置，作為地下水流動分析模式選擇與水資源產能分析基礎。 Due to climate variability and change, drought has increased over the years in intensity and frequency. Seeking the potential and exploitation of groundwater resources in the mountainous region of Taiwan can help increase resilience to water scarcity. The current investigation program mainly focuses on collecting essential hydrogeologic data on a borehole scale. To precisely estimate groundwater potential in supporting the engineering planning of water resources development and utilization, additional hydrogeologic data with spatial scales must take into account. In response to this concern, the objective of this project is to produce advanced hydrogeological data to reduce the uncertainty of model parameters by integrating existing data with data mining techniques. This effort will also help improve the accuracy of predictive models of groundwater flow. A three-year research is proposed to study the problem mentioned above. The first year is to construct three permeability index models representing different geological formations, respectively. The newly developed models can be utilized to estimate permeability for the untested zone in a given borehole. Thus, the distribution of vertical permeability can be extrapolated. The second year is to collect existing hydraulic test data to reveal additional hydrogeologic information (flow dimension and fracture/matrix permeability ratio) related to understanding networks of fractures. The third year is to detect aquifer boundaries to assess lateral groundwater potential from a given borehole. Finally, all results carried out from previous studies will be integrated to provide conceptual pictures of a spatial distribution of geologic structure, aquifer hydraulic properties, and hydraulic boundary conditions. The combined outcome can assist in establishing site hydrostructural models which are a basis for selecting groundwater flow models and evaluating groundwater yield.

Keyword(s)

地下水資源
岩體滲透性
水力結構模型
水文地質
groundwater resources
rock permeability
hydrostructural model
hydrogeology

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Data Mining for Additional Hydrogeologic Data and Application on Groundwater Resources Assessment in the Mountainous Region of Taiwan

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