圖書典藏及影音數位平台

民國101年2月5日由樹谷文化基金會進行例行性台南市考古遺址巡查時，行經歸仁區與關廟區交界的大昌橋發現疑似遺址。該會發現後即向主管機關臺南市文化資產管理處陳報，後於民國101年2月17日會勘，確認有貝塚、陶片等明確堆積(臺南巿立文化資產管理處101年2月21日南巿文資處字第1010155637號函，如附件)。臺南巿立文化資產管理處另以101年5月22日南巿文資處字第1010426828號函請本局依遺址監管保護辦法第七條規定，邀請考古專家學者辦理此疑似遺址之內涵調查評估及範圍。

This project conducted surveys and drill work of possible sites between both sides of the embankment project area on the Yanshui River from Dachang Bridge to Bajia Bridge. The primary objective was to evaluate the significance of these sites, and propose impact mitigation recommendations for follow-up maintenance. Because parts of the Dachang Bridge site have been exposed to the surface within the projected area, and have been significantly affected by construction, this project focused on the distribution and depth of the sites in this area. Twenty-nine auger drilling cores and 11 HQ drilling cores were completed in the projected area. In addition, nine manual drillings were conducted in the Dachang Bridge site. The overall analytic result of these cores showed that except for the Dachang Bridge site, other drilling locations did not uncover any archaeological deposition and remains. By the stratigraphic data from the cores, it is suggested that most of the project area has experienced multiple river erosion and re-accumulation. Most of the original deposition have been washed away by floods and have disappeared. Only certain features that dig deep to the muddy layers that obstructed flood erosion forces and preserved. Manual drilling confirmed that the archaeological remains scattered near the Dachang Bridge site is 30 meters long, 6 meters wide, and is approximately 30 cm thick. The remains belong to the late stage of the Tapenkeng culture, and are approximately 4,500 years ago. Because the range of distribution is not large, and most of the accumulation has been depleted by flood erosion, the value of cultural resources is relatively low. The impacts from the natural forces make it difficult to be preserved. The results of the aforementioned work showed that most of the project area was disturbed by river erosion and re-accumulation. However, certain deeper muddy layers still contain some archaeological remains and will be influenced by the subsequent construction. Therefore, the follow-up construction must be completed according to the Cultural Heritage Preservation Act. This study recommends that a site maintenance and management plan should be submitted and agreed by the competent authority of the Tainan City Government. The content of the plan should include the excavation of the Dachang Bridge Site and implementation of an archaeological supervision during the subsequent embankment construction. If significant features or specimens are encountered during future construction, the competent authorities must be notified for follow-up work according to relevant regulations and avoid cultural assets damaged by the construction...