2004年长沙市坡子街出土的大批木构件是南宋时期的城市供水系统,规模宏大,具有极高的文物价值。本文从分析该批木构件病变机理着手,筛选出切实可行的脱水保护方法,从而对这些木构件做清洗、脱色、脱水等保护处理,并从脱水前后的质量和收缩率两方面进行分析评估。 In 2004, a large number of wooden components unearthed from Pozi Street in Changsha City was the urban water supply system during the Southern Song Dynasty. It was a large scale and had a high value of cultural relics. This paper starts with analysing the mechanism of the wood structure lesions, and selects feasible dehydration protection methods, so as to carry out cleaning, decolorization, dehydration and other protection treatments on these wood components, and analyze and evaluate the quality and shrinkage rate before and after the dehydration.