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水力發電，水帶來了電、也帶來了泥沙。每到盛夏，乾涸的水庫見底，工程團隊把握時機快快開挖，清出淤泥、再次見到九蛙，水庫有效容量多一點、可用的材料也更多點。 |
Sun-Moon Lake Sediment
| Hydropower generates electricity and brings sediments. When water levels are lower in dry summers, engineering teams take the opportunity to dredge. By removing sludge, it increases reservoir capacity, and offers usable materials. |
水力發電過程中因抽蓄作業或上游沖刷而堆積在下游水庫底部的淤泥即為底泥。在水力發電日復一日的流動之中，泥沙隨著水流進入水庫沉積，需定時清淤以延長水庫使用年限。
Material Knowledge
Due to water pumping or erosion upstream, hydropower plants accumulate sediments in reservoirs downstream. In daily operations, regular dredging is necessary to extend reservoir lifecycles.
水庫底泥的黏性比一般泥土較高，也含有更多的雜質如碎石、植物等，在使用前需先經過曬土程序，再將底泥土細碎化後篩除雜質。底泥土因含有許多有機質，無法使用一般陶土之參數燒製而有不同燒法。
Material Property
Reservoir sediments are sticker than conventional soil, and include more impurities, such as gravels and plants. Before using, sediments are dried, and impurities are filtered out. With abundant organic matters, firing methods are also different from conventional clay.
目前台電文創所使用的底泥，大多來自日月潭水庫中經由清淤作業所清出之淤泥。以傳統清淤方式，僅能清出約一萬立方米。台電公司導入新式水力發電排砂，則可清除三十萬立方米，達到入出平衡。
Material Source & Quantity
TPCreative is using sludge and sediments mostly from Sun Moon Lake Reservoir. Traditional dredging methods only remove 10,000 cubic meters a year. After TaiPower introduces new hydropower sediment ejection methods, it can remove 300,000 cubic meters a year, comparable to annual accumulation levels.
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