摘要：为了定量评价汉阳陵地下博物馆遗址厅玻璃全封闭结构的密闭程度,采用空气交换率表征了遗址厅的空气渗漏情况,介绍了用示踪气体浓度衰减法计算空气交换率的基本原理以及在汉阳陵地下博物馆遗址厅中的应用。通过测定发现:封闭的汉阳陵地下博物馆遗址厅实际上存在明显的室内外空气交换,且空气交换率达到0.04h^-1。并发现遗址厅玻璃门的开关次数对遗址厅长期的空气交换影响不大,对其短时间的空气交换影响明显。不同的时段内遗址厅的空气交换率略有不同,遗址厅内不同位置空气的渗漏程度亦存在差异。

关键词：示踪气体浓度衰减法；空气交换率；文物

Abstract：To characterize the air tightness of the protection hall of burial pit in Han Yang Ling Mausoleum， the air change rate （ACH） was tested by tracer gas decay method. The principle of the tracer gas decay method and the application process in the protection hall of burial pit were both introduced. The results showed that the enclosure which looked hermetically sealed had a big ACH and the ACH was up to 0.04 h^-1. It was also discovered that the frequency of open the door had minor influence on ACH for longer time and major influence for shorter time. The ACH changed slightly in different intervals and on different positions air leakage degree were not alike too. 

Keywords：tracer gas decay method； air change rate； historical relics