碩士 / 國立中興大學 / 水土保持學系所 / 103 / Agricultural pursuits and fisheries have extracted groundwater seriously in Taiwan coastal area that bring about land subsidence, salt-water encroachment and soil salinization problems.
Coastal aquifers are frequently affected by tidal effects, to explore the groundwater recharge figuring out that is effectively to prevent the sea water intrusion inland when recharge amount is increased. Therefore, the replenishment that effects of rainfall in coastal area will makes aquifer water level having more increase volume. When the effect of tide wave and the effect of rainfall occur in the same time, what is the relationship between these two impact factors? Which one has more influence than the other? What will water level trends is in different soils? Is the subject of this study was to investigate. First, we linearize the Boussinesq equation and build the governing equation with the corresponding boundary conditions. Second, the fluctuation of groundwater level due to the tidal waves and time variability rainfall is solved by an analytical approach.
The solution is based on the Dupuit-Forchheimer assumptions, separated into tidal waves part and rainfall part using general integral transforms technique to solve the analytical question, on the other hands studying the changes of the sloping bed with variation of coastal slope and variety of soil types to fully understand the variation of groundwater table in coastal aquifer. This research is to explore a new analytical approach to simulate groundwater table near coastal areas, which is of the semi-infinite domain type, and under the time-variant rainfall events and linear rainfall for different soils.
| Identifer | oai:union.ndltd.org:TW/103NCHU5080041 |
| Date | January 2015 |
| Creators | Jing-Lun Huang, 黃靖倫 |
| Contributors | 謝平城 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 199 |
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