Due to the cliff's rock quality and environmental conditions,the wall paintings in the Maijishan Grottos are difficult to preserve.Amongst the preserved artworks,polychrome sculptures account for the majority,with mud sculptures being the most predominant.Due to the effects of time,preservation environment,and manufacturing techniques,these sculptures often suffer from issues such as hollowing and detachment,with some having already collapsed and others at risk of imminent collapse.In the protection and restoration of the background part of the Bodhisattva sculpture on the west side of Cave 128,traditional methods involving wooden anchors and long hemp were used,supplemented by localized grouting and bamboo strips to seal the stabilized cavity edges.For the background wall of the main Buddha in Cave 94,due to its complex preservation environment,grouting was not used.Instead,a comprehensive control was applied during the process of setting wooden anchors with long hemp and sealing the cavity edges,ensuring that the reinforcement points worked cohesively.Both restoration tasks showed desirable results,and provides a reference for solving similar issues in Maijishan and other grottoes.
Maijishan Grottoespolychrome sculpturesprotection and restorationoptimized techniques
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