複合式量測技術應用於感潮濕地流量觀測及地形分析之研究

APPLICATION OF COMPOSITE INVESTIGATION TECHNIQUE ON FLOW MEASUREMENT AND TOPOGRAPHY ANALYSIS OF TIDAL EFFECT WETLAND

李豐佐(Fong-Zuo Lee) ； 黃國文(Gwo-Wen Hwang) ； 賴進松(Jihn-Sung Lai) ； 施上粟(Shang-Shu Shih) ； 楊淑媛(Shu-Yuan Yang) ； 黃春嘉(Chun-Jia Huang)

《中國土木水利工程學刊》 31卷6期 (2019/10) Pp. 545-552

https://doi.org/10.6652/JoCICHE.201910_31(6).0003

摘要

本研究利用旋槳式流速計搭配聲波都普勒流速儀，針對宜蘭無尾港重要感潮濕地進行全潮流量之研究，研究發現濕地入流之潮流量遠大於平時港口大排及上游湧泉區入流濕地的淡水流量，本研究同樣利用聲波都普勒流速儀底追蹤功能，輔以即時動態定位技術驗證高程，進行無尾港重要濕地到港口大排的水下地形量測，建立ADCP底追蹤量測高程之修正值，同時應用無人飛機拍攝無尾港重要濕地陸域影像及結合即時動態測量技術進行陸域地形分析，此外，根據河床質採樣分析結果顯示底床高程修正值與底床質粒徑之曲率係數呈現冪次遞減之高度相關性。

關鍵字

聲波都普勒流速儀 ； 感潮濕地 ； 即時動態測量技術 ； 無人飛機

並列摘要

This study integrates propeller current meters coupling with acoustic Doppler current instruments to conduct a full-tide study in the Wuweigang tidal effect wetland. The full-tide measurement composites the water level and flow rate data of a complete tidal period during the flood season, and then the flow discharge of tide is estimated. The study found that the flow discharge of wetland tidal inflow is much larger than the freshwater flow. Additionally, the bottom tracking function of ADCP is used for topography measurement under water. At the same time, we supplemented Real-Time Kinematic technology to verify the elevation that measured by ADCP from the spring area to the outflow gate. In addition, the Unmanned Aerial Vehicle, UAV, was used to capture the land image of the Wuweigang tidal effect wetland. The image analysis technique and the RTK technology are integrated for land topographic analysis. The elevation correction value of bottom tracking function of ADCP is analyzed and applied. Therefore, the power law decreasing relationship between the elevation correction value and curvature coefficient of grain size is preliminary established in this study.

並列關鍵字

acoustic doppler current instrument ； tidal effect wetland ； real-time kinematic technology ； unmanned aerial vehicle