干旱环境下土遗址薄壁卷柏藓覆盖层作用效果  

The effect of Racopilum cuspidigerum capping on earthen sites in an arid environment

作　　者：黄井镜 郭青林[1,2] 尚东娟 赵建忠 黄渊鸿 裴强强 HUANG Jing-jing;GUO Qin-ling;SHANG Dong-juan;ZHAO Jian-zhong;HUANG Yuan-hong;PEI Qiang-qiang(Relics Protection and Research Center of Gansu Province,Dunhuang Academy,Dunhuang 736200,Gansu,China;Western Center for Disaster Mitigation in Civil Engineering with the Ministry of Education,Lanzhou University of Technology,Lanzhou 730050,China;Cultural Heritage Conservation Design and Consultation Co.,Ltd.of Gansu Mogao Grottoes,Dunhuang 736200,Gansu,China;Institute of Maijishan Grottoes Art,Dunhuang Academy,Tianshui 741020,Gansu,China)

机构地区：[1]敦煌研究院甘肃省敦煌文物保护研究中心,甘肃敦煌736200 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,兰州730050 [3]甘肃莫高窟文化遗产保护设计咨询有限公司,甘肃敦煌736200 [4]敦煌研究院麦积山石窟艺术研究所,甘肃天水741020

出　　处：《兰州大学学报（自然科学版）》2024年第4期473-479,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：敦煌研究院科技类项目(2020-KJ-YB-2);国家重点研发计划项目(2020YFC1522200)。

摘　　要：为研究薄壁卷柏藓覆盖层对夯土遗址的作用,室内开展其透气性、雨蚀、温度敏感性和风蚀试验,探讨干旱胁迫下的透气性变化,以及5种覆盖度条件下的抗雨蚀、保温、隔热和抗风蚀能力.结果表明,薄壁卷柏藓在干旱胁迫下的透气性呈动态逐渐趋于稳定的变化过程,空气对流能够显著增大透湿率,有气流扰动的最终透湿率是无气流扰动的3.32倍;具有隔热和保温的双重特征,保温性能更突出;覆盖度的提高能显著提升抗雨蚀和抗风蚀能力,回归方程满足线性函数法则.The effect of Racopilum cuspidigerum capping on earthen sites was studied through indoor experiments on the permeability,rain erosion,temperature sensitivity and wind erosion resistance.The changes in permeability under drought stress,the rain erosion resistance,insulation and thermal insulation performance,as well as wind erosion resistance under 5 different coverage conditions were explored.The results indicated that the permeability of moss under drought stress was a dynamic and continuous process that gradually stabilized.Air convection could significantly increase moisture permeability,and the final moisture permeability with airflow disturbance was 3.32 times that without airflow disturbance;the R.cuspidigerum cappinging had dual characteristics of heat insulation and preservation,and its preservation performance was more prominent;the increase in coverage could significantly enhance the resistance to wind(rain)erosion,and the regression equation satisfied the linear function rule.

关 键 词：土遗址 薄壁卷柏藓 覆盖度 风蚀 

分 类 号：TU444[建筑科学—岩土工程]