摘要
可溶盐风化是石窟寺类建筑遗产上常见的一种自然风化类型,对该类遗产的表面形貌、岩石组分的稳定性都有极大的影响,但目前难有根治的办法.本研究旨在通过现场可溶盐无损提取与计算机热力学模型ECOS-RUNSALT相结合的方式,对石窟寺崖体表面的可溶盐类型、分布以及相变过程进行分析预测,以期为该类病害的预防性保护提供科学依据.现场的提取工作在甘肃省陇东地区规模最大的石窟寺庆阳北石窟寺进行.研究结果显示,北石窟寺外立面岩石中可溶盐浓度呈现高多低少的分布状态,析出晶体为不同的多种盐复合体,其中包含9种单组分盐和4种双组分盐.大多数检测区域结晶起始的空气湿度预测在81.4%左右,结合北石窟寺赋存环境温湿度监测数据可知,上午应为结晶集中发生的时段.
Salt weathering is a common process affecting the surface morphology and grains of rock-hewn cave temples that are significant built-heritage sites in China.It can consequently result in serious damage to these sites,but with few solutions for the problem.This study aims to evaluate and predict the type,distribution and phase transition process of the soluble salts on the fa?ade of rock-hewn cave temple through the combined approach of the non-destructive in situ salt extraction and salt behaviour modelling named ECOS-RUNSALT.The study site is North Grottoes Temple(NGT)which is the largest cave temple in the Longdong area,Gansu Province,China.The results imply a higher concentration of salt in the upper area of the NGT fa?ade than that in the lower area.ECOS-RUNSALT also predicted complex salt mixtures,including 9 single salts and 4 double salts.Crystallization of salts was predicted to occur at relative humidities of around 81.4%.Based on ambient temperature and humidity data from NGT it is likely that salts start to crystallize out during the morning.
作者
王颖红
Heather VILES
郭青林
杨善龙
张晖
WANG Yinghong;Heather VILES;GUO Qinglin;YANG Shanlong;ZHANG Hui(School of Art and Archaeology,Zhejiang University,Hangzhou 310028,China;School of Geography and the Environment,University of Oxford,Oxford,UK,0X13QY;National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites,Dunhuang Academy,Dunhuang 736200,China)
出处
《石窟与土遗址保护研究》
2022年第2期18-26,共9页
Research On The Conservation Of Cave Temples And Earthen Sites
基金
甘肃省科技重大专项计划资助项目(18ZD2FA001)
EPSRC SEAHA-CDT项目(EP/L016036/1)
浙江省建设科研项目(2021K046)
作者简介
王颖红(1991-),女,贵州省贵阳市人,浙江大学助理研究员,主要从事石窟寺本体风化与保护研究,E-mail:yinghong.wang@zju.edu.cn
