沿海地區單一與雙感潮河段滲漏含水層地下水位受潮汐波影響研究

過去沿海地區養殖漁業、農業活動頻繁，特別是在沿海地區大量抽取地下水，引致地層下陷、海水入侵、甚至海水倒灌等問題，時有耳聞。近年來，沿海都市開發迅速，對沿海地區永續發展而言，水資源匱乏問題可能是未來會面臨的難題，因此，海岸水層地下水的探討與研究，不可忽略。過去針對沿海地區含水層二維地下水流相關解析解之研究，所考慮的邊界條件較為簡單，大致可分兩類，分別是受海洋邊界之影響或單一感潮河流之影響(Sun, H.,1997, Li et al., 2000, Li et al., 2002)。本研究將改良二維解析解之通解，用以描述河口地區自由含水層和拘限含水層系統中水位受海潮波動的變化，同時加入含水層系統水文地質參數非等向性之考量，使模式更趨於實際情形；同時考慮二條感潮河段對含水層水位相互作用之影響，以探討平行海岸(along-shore)波的傳播對地下水位變化之關係。

關鍵字

感潮河段；地下水解析解；滲漏水層；分離係數；阻尼係數

並列摘要

Past coastal fish farming, agricultural activities frequently, especially a large number of extract of groundwater in coastal areas, causing land subsidence, saltwater intrusion, and even salt water intrusion and other issues, are often heard. In recent years, rapid coastal urban development, sustainable development of coastal areas, the problem of water scarcity may be the face of future challenges, therefore, to explore coastal waters and groundwater studies, cannot be ignored. Correlation analytical solution of the flow for the past two-dimensional groundwater aquifers in coastal areas, the boundary conditions are considered relatively simple, can be divided into two categories, the impact or influence of a single maritime boundary tidal river (Sun, H. by respectively, 1997, Li et al., 2000, Li et al., 2002). This study will further consider the impact of two tidal reaches of the aquifer water level of interaction, in order to explore the coast parallel propagation (alongshore) wave of the relationship between changes in groundwater level.

並列關鍵字

Tidal river ； Analytical solution ； Leaky aquifer ； Separation coefficient ； Damping coefficient

國際替代計量

沿海地區單一與雙感潮河段滲漏含水層地下水位受潮汐波影響研究

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