摘要
水是引起石窟寺乃至不可移动文物发育病害的根本原因之一。基于介电常数测定岩土体含水率的传感器可实时捕捉到石窟围岩内部含水率的变化,为石窟水害研究提供了极大的便利,但是温度、易溶盐等会造成监测结果存在误差,且数据的校正受具体传感器测试原理、监测对象和环境影响。在榆林窟围岩水分监测过程中发现含水率监测结果明显高于实测含水率,通过室内温度补偿试验得出不同温度时的器测含水率与实测含水率,结合高斯过程回归模型对5TE传感器的误差进行校正,校正后的监测数据更符合实际情况,有效提高了5TE传感器监测精度。校正后的传感器可为榆林窟崖体含水率的现场监测结果分析提供支撑,对石窟寺崖体水分运移研究和水害防治具有一定的意义。
Water is one of the fundamental causes of deterioration in cave temples and most immovable cultural relics.Sensors based on dielectric constants to measure the water content of rock and soil objects are capable of capturing changes in water content in the surrounding rock masses of cave temples in real time,and thereby provides an extremely convenient method for studying water damage in cave temples.However,there is a chance that the temperature and soluble salts of the test materials could cause errors in the monitoring results;in addition,the correction of the collected data is likely to be affected by certain sensor test principles,features of the monitored objects,and environmental factors.While monitoring the water in the rock masses of the Yulin Grottoes,research has found that the monitored amount of water is obviously higher than the actually measured water content.This study used indoor temperature compensation tests to obtain the values of the monitored water content and actually measured water content at different temperatures,respectively,which can be used to calibrate the errors in the 5TE sensor by combining this data with the Gaussian process regression model.The calibrated monitoring data is more consistent with the actual measured results,and this in turn helps to improve the monitoring accuracy of the 5TE sensor.The calibrated sensor can provide valuable support for the analysis of on-site water content at the Yulin Grottoes in Gansu Province,and is thus of great significance for understanding and preventing water damage in cave temples.
作者
王彦武
郭青林
赵腾远
张燕芳
刘晓颖
裴强强
朱毓
WANG Yanwu;GUO Qinglin;ZHAO Tengyuan;ZHANG Yanfang;LIU Xiaoying;PEI Qiangqiang;ZHU Yu(Research Center for Conservation of Cultural Relics of Dunhuang,Dunhuang Academy,Dunhuang 736200,China;Cultural Heritage Conservation and Design Consulting Co.,Ltd of Gansu Mogao Grottoes,Dunhuang 736200,China;Key Laboratory of Mechanics on Disaster and Environment in Western China with the Ministry of Education,College of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China;School of Human Settlements and Civil Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《石窟与土遗址保护研究》
2024年第1期4-16,共13页
Research On The Conservation Of Cave Temples And Earthen Sites
基金
国家自然科学基金(42102330)
甘肃省敦煌文物保护研究中心开放课题(GDW2021ZD07)
关键词
石窟寺
5TE传感器
温度
高斯过程回归模型
cave temples
5TE sensors
temperature
Gaussian process regression model
