干旱区土遗址掏蚀区土盐渍劣化与风蚀损耗 效应

崔凯; 谌文武; 韩琳; 王旭东; 韩文峰

干旱区土遗址掏蚀区土盐渍劣化与风蚀损耗效应 English Version

崔凯^1,2,3,4,
谌文武^2,4,,
韩琳^2,4,
王旭东^2,4,
韩文峰^2,4

1. 兰州理工大学甘肃省土木工程防灾减灾重点实验室，甘肃兰州 730050 ； 2. 兰州大学西部灾害与环境力学教育部重点实验室，甘肃兰州 730000 ； 3. 西部土木工程防灾减灾教育部工程研究中心，甘肃兰州 730050 ； 4. 国家古代壁画保护工程技术研究中心，甘肃敦煌 736200

基金项目: 国家“十一五”科技支撑计划课题（2006BAK30B02）；国家“十二五”科技支撑计划课题（2010BAK67B16）；教育部西部灾害与环境力学重点实验室开放基金项目（klmwde201006）；古代壁画保护国家文物局重点科研基地开放课题；兰州理工大学博士后、博士科研发展基金项目（BS0420902）

详细信息

作者简介:
崔凯 (1980 – ) ，男，副教授，博士后，从事西北干旱区岩土劣化机理与过程研究工作。

中图分类号: TU47
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出版历程
- 发布日期: 2011-09-14

Effects of salinized deterioration and aeolian ullage on soils in undercutting area of earthern ruins in arid region

CUI Kai^1,2,3,4,
CHEN Wen-wu^2,4,,
HAN Lin^2,4,
WANG Xu-dong^2,4,
HAN Wen-feng^2,4

(1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China (Lanzhou University), Ministry of Education, Lanzhou 730000, China; 3. Western Center for Disaster Mitigation in Civil Engineering of Ministry of Education of China, Lanzhou 730050, China; 4 National Engineering Research Center for Conservation of Ancient Wall Painting, Dunhuang 736200, China)

摘要

摘要: 掏蚀区的形成和发展是中国干旱地区受气候因素控制最为典型和危害最为普遍的土遗址病害之一，研究基于吐鲁番高昌故城、瓜洲锁阳城、西宁明长城和银川西夏王陵 4 处典型遗址掏蚀区特征描述和盐分监测结果，证实了土遗址底部掏蚀区有盐渍土带的客观存在。结合经充分脱盐后人为掺入不同类型和含量盐分并经历 3 次干湿循环的遗址土重塑土样的弹性波速测试实验和风洞实验结果分析，揭示了土遗址掏蚀病害形成和发展过程中盐渍劣化和风蚀损耗两种重要效应；进而对其机理进行深入分析和阐释，并揭示了盐分类型、盐分含量和挟沙风风速对其产生的显著的影响；进一步结合工程地质学和力学理论进行分析，归纳出三类由其导致的土遗址变形破坏演化机制，为防治和监测此类病害的发生和发展及其对土遗址稳定造成的影响提供有益的参考。
- 干旱 /
- 土遗址 /
- 掏蚀区 /
- 盐渍劣化 /
- 风蚀损耗
Abstract: The formation and development of undercutting area is one of the typical diseases controlled by climatic factors and will commonly and directly do harm to earthern ruins in arid region. Based on the results of feature description and salinity monitoring of undercutting area in some typical relics in Turpan Gaochang ancient ruins, Guazhou Suoyang ruins, Yinchuan Xixia King tomb and Xining Ming Great Wall, it is found that aeolian bond exists in the bottom undercutting area of earthern ruins. Based on the results of wind tunnel and elastic wave velocity experiments in laboratory on remodeling samples mixed with different salt contents and undergoing three dry-moisture cycles after desalination, it is revealed that salinized deterioration and aeolian ullage are two important effects in the process of the diseases. In-depth analysis and interpretation of mechanism of disease are performed so as to discover influences of salt type, salt content and wind velocity on the two effects. Through engineering geology and mechanical theory analysis, three categories of deformation and failure mechanism of evolution due to ruin’s undercutting are summarized. It may be useful for controlling and monitoring the disease and its impact on stability of ruins.
- aridity /
- earthern ruin /
- undercutting area /
- salinized deterioration /
- aeolian ullage

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