- 期刊
應用沙腸袋工法於七股沙洲復育之減碳效益評估
Assessment of Carbon Reduction Benefits of Using Geotextile Tube, for Coastal Restoration on Cigu Spit, Taiwan
摘要
隨著國家2050年淨零排放目標的確立，氣候變遷、永續發展等議題被廣泛討論，國家各產業皆朝永續發展相關技術積極發展。依據行政院環境保護署彙編的「中華民國國家溫室氣體排放清冊報告」，2020年各行業二氧化碳排放量中能源產業為最大排放量之產業，製造業與營造業則為第二大排放量產業，占比約為12.6% （Environmental Protection Administration, 2022），顯見營建工程於淨零排放之路徑上有轉型的必要。此外，近年來國內對於海事工程之開發受高度重視，如風能發展之離岸風電及氣候變遷調適之人工養灘等，相關技術的提升必定需與現今永續發展之議題相結合，朝環境永續目標邁進。地工沙腸袋為近來海事工程、河川護岸及環保淤泥處理等工程時常應用的工法之一，由於地工沙腸袋是使用輕質的地工織物織造而成，再配合現地海沙或河沙灌注成形，大大減少了高耗能及高碳排工程材料的使用，唯目前國內對於以地工沙腸袋於海事工程用之減碳效益仍缺乏長期數據及案例的累積。爰此，本文以101年度七股青山港沙洲復育工程所使用之沙腸袋工法為例，透過材料選取及機具使用方面之碳排放量，進一步與傳統之消波塊布放工法及拋石工法比較，探討及評估其工法選擇上之減碳效益。
並列摘要
With the establishment of the national target for net-zero emissions in 2050, issues related to climate change and sustainable development are widely discussed, and various industries are actively advancing technologies related to sustainable development. According to the "Greenhouse Gas Inventory Report of the Republic of China" compiled by the Environmental Protection Administration (EPA), the energy industry was the largest emitter of carbon dioxide among all sectors in 2020, while the manufacturing and construction industries were the second-largest emitters, accounting for approximately 12.6% (Environmental Protection Administration, 2022). This highlights the necessity for the construction industry to transform on the path to net-zero emissions. Moreover, domestic development of maritime engineering has recently received significant attention, including offshore wind power development and climate adaptation measures such as artificial beach nourishment. The enhancement of related technologies must be integrated with current sustainable development issues to advance towards environmental sustainability goals.Geotextile tube have become a common method used in maritime engineering, riverbank protection, and environmental sediment treatment. Since geotextile tube are made from lightweight geotextile materials and filled with local marine or river sand, they significantly reduce the use of high-energy and high-carbon engineering materials. However, there is currently a lack of long-term data and case studies on the carbon reduction benefits of using geotextile sandbags in maritime engineering in the country. Therefore, this paper uses the tube method employed in the 2012 Cigu Qingshan Harbor sandbank restoration project as an example. By examining the carbon emissions associated with material selection and equipment use, and comparing it with traditional methods such as wave-dissipating blocks and riprap methods, this study explores and evaluates the carbon reduction benefits of this construction method.