Table 1 Overview to the main preservation projects on the Yongling Mausoleum
Year | Content | Effect |
|---|---|---|
1952 | The arches as long as 6.1 m were patched using the stone in the wall of the antechamber’s door and the stone at the edge of the mausoleum | A complete structure chamber was built |
1989 | Mausoleum repair, reinforcement of the colored drawings and restoration of the supporting walls were carried out in the underground palace | The leakage problems were solved |
1989 | The north wall of the mausoleum was excavated to a width of 0.7 m and a height of 1.6 m. The original air defense channel was used as an exhaust channel | An environment with a relatively stable humidity was achieved |
2012 | Vitreous shields were installed | Physical isolation |