應用無線射頻識別系統於七家灣溪底床質運移之探討

Application of Radio Frequency Identification on Bedload Transport on Chijiawan Creek

郭上琳(Shang-Lin Kuo) ； 蔡亦睿(Yi-Ruey Tsai) ； 羅冠名(Guan-Ming Luo) ； 郭偉丞(Wei-Cheng Kuo) ； 王筱雯(Hsiao-Wen Wang)

《中華防災學刊》 7卷2期 (2015/08) Pp. 231-238

摘要

推移質測量技術的提昇有助於了解河川泥砂運移特性，為探討無線射頻識別系統（Radio Frequency Identification, RFID）技術應用於台灣高山溪流環境的適用性，本研究嘗試將此技術套用於七家灣溪之泥砂運移情形。於石頭放置後七個月內共進行三次尋回調查，並搭配所蒐集之水文資料，進一步探討泥砂運移與水文事件之關係。本研究於調查期間所歷經的水文事件皆小於七家灣流量站1年重現期距，三次調查尋回率皆約70%。由結果顯示，河道型態、石頭重量與水文事件對石頭運移有不同程度的影響，重量輕或位於凹岸之石頭具較大位移，而與小於1年重現期距之流量無明顯關聯性。本研究成果顯示1年重現期距流量下RFID技術於高山溪流適用性高，但倘若出現更大強度的水文事件，其適用性仍有待觀察。

關鍵字

高山溪流 ； 無線射頻識別系統 ； 底床質運移

並列摘要

Advanced Bedload measurement technology helps to understand characteristics of sediment transport. To investigate the applicability of radio frequency identification (RFID) technology in mountain rivers in Taiwan, this study attempted to apply RFID technology on Chijiawan Creek. We deployed tracers in artificial rocks and surveyed their movements three times during seven months. Also, we collected hydrology data to investigate the relationship between sediment transport and hydrologic events. While all events during the surveyed period were less than 1-year return period flow of Chijiawan gaging station, the recovery rates of our surveys were about 70%. The results showed that channel types, weight of rocks, and hydrologic events all affect tracer movements. The light rocks or those located at concave bank had greater potential to move. However, there is no obvious relationship between rock displacement and flow that less than 1year return period. We concluded that RFID had its high applicability in mountain rivers, but under 1-year return period flow. The application under higher flows still needs to be further observed.

並列關鍵字

Mountain streams ； Radio frequency identification ； Bedload transport