Please use this identifier to cite or link to this item:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91485
Title: | 伏流水物理傳輸現象之模擬探討 Simulation on the Physical Transportation of Hyporheic Flow |
Authors: | 郭胤賢 Yin-Sian Kuo |
Advisor: | 游景雲 Gene J-Y You |
Keyword: | 伏流水,地下水系統,水文過程,Darcy' Law,有限差分法,MODLFOW,敏感度分析, hyporheic flow,groundwater system,hydraulic process,Darcy' Law,finite-difference method,MODFLOW,sensitivity analysis, |
Publication Year : | 2023 |
Degree: | 碩士 |
Abstract: | 這些年伏流水在台灣為新興水源,台灣所討論的伏流水是關注在水資源上的應用,與國外研究的議題在本質上有明顯的區別,國外伏流水相關研究大多討論其物理機制及關連水文參數的影響,文獻常著重在河道地形地質條件及河床底下的生態系統與溶質、養分及汙染物在河道中的傳輸。考量國內對於伏流水的定位及過往相關研究,本研究旨在藉由數值模擬MODFLOW來探討在河道水文系統中主導伏流水移動的水文參數以提供對於伏流水更完整的理解,瞭解是否能提供量化伏流水之含量。因此本研究採用多方面的討論,包括文獻探討、概念模式及案例研究。文獻探討整合國外對於伏流水的各項研究來釐清伏流水的定義及其討論的面向。概念模式採用MODFLOW進行河道中的敏感度分析,並以此來探討主導的水文參數對於伏流水的影響。本研究也以實地案例來討論伏流水與地下水之間的相互作用。台灣南部地區的水資源不足一直是政府重視及棘手的問題,至此高屏溪在近幾年有許多的伏流水工程開發及啟用,以補足南部在旱期時的水資源不足。為助於提升對於伏流水與地下水之間的交互作用的認知及理解,本案例選定高屏溪的上游進行兩個場址,也為伏流水開發的預定區域。綜合上述各個面向,研究做出相關數值模擬進一步觀察及分析呈現伏流水的現象以具體其物理機制,希望能助於提高對地表水及地下系統的理解。 In recent years, hyporheic flow has emerged as a significant water source in Taiwan. However, the current understanding of hyporheic flow in Taiwan primarily focuses on its utilization for water resources, which differs largely from the academic discourse on the subject. Previous research has explored the driving forces behind hyporheic flow, emphasizing the interaction between stream morphology, ecosystem dynamics, and the transport of solutes, nutrients, and contaminants in river ecosystems. The objective of this thesis is to provide a comprehensive understanding of hyporheic flow through numerical simulation using MODFLOW. The study aims to investigate the dominant hydrological factors influencing hyporheic flow processes. To achieve this, a multifaceted approach is employed, including literature review, a simplified model simulation, and a case study. The literature review examines the various issues regarding hyporheic flow, assisting to establish a clear and accurate definition of hyporheic flow. By reviewing existing research, the true essence and significance of hyporheic flow can be realized. The simplified model utilizes MODFLOW to analyze the sensitivity of hyporheic flow within the hydraulic system. This model allows for an examination of how different factors influence the occurrence and characteristics of hyporheic flow. By simulating different scenarios, the study can identify the key hydrological factors that drive hyporheic flow. Additionally, a case study is conducted to observe and analyze the hyporheic flow and the interactions between the stream and groundwater. The study area is located at the Kaoping River in Southern Taiwan, with several hyporheic flow projects constructed or planned in recent years. These observations could provide valuable insights into hyporheic flow dynamics and contribute to the advancement of knowledge regarding surface-subsurface systems. It is important to note that water scarcity in Southern Taiwan has long been a pressing issue for the government. Given this context, the study area's selection is particularly relevant, as it allows for a comprehensive exploration of hyporheic flow while addressing the region's water resource challenges. Overall, this thesis aims to enhance our understanding of hyporheic flow by integrating theoretical knowledge, numerical simulations, and real-world observations. By advancing insights into surface-subsurface systems and hyporheic flow dynamics, this research has the potential to contribute to the management and utilization of water resources in Taiwan. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91485 |
DOI: | 10.6342/NTU202301539 |
Fulltext Rights: | 同意授權(限校園內公開) |
Appears in Collections: | 土木工程學系 |
Files in This Item:
File | Size | Format | |
---|---|---|---|
ntu-111-2.pdf Restricted Access | 8.34 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.