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Cui K.,Lanzhou University of Technology | Cui K.,Lanzhou University | Cui K.,Western Center for Disaster Mitigation in Civil Engineering of Ministry of Education of China | Cui K.,National Engineering Research Center for Conservation of Ancient Wall Painting | And 8 more authors.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2011

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. Source


Cui K.,Lanzhou University of Technology | Cui K.,Lanzhou University | Cui K.,Western Center for Disaster Mitigation in Civil Engineering of Ministry of Education | Cui K.,National Engineering Research Center for Conservation of Ancient Wall Painting | And 8 more authors.
Yantu Lixue/Rock and Soil Mechanics | Year: 2012

Based on salinity field observations and qualitative analysis results at salinization belt of the typical earthen ruins in the research area, the paper summarizes the characteristics of earthen ruins with saline soil and generates a brief concept of aeolian erosion ullage effect. And then, on the basis of wind tunnel simulation experiment and microstructure analysis results of reconstituted samples going through dry-wet circulation after being mixed with different content of common salts Na 2SO 4 and NaCl, it reveals that the saline process of those salts have significant impact on anti-erosion ability of the site, and a good correlation existing between microstructure characteristics parameters of pore and wind erosion rate of the samples under saline process is also proved by statistical analysis method. Finally, with a combination of the qualitative analysis and the experimental results, depletion mechanism of the effect of aeolian erosion ullage at the salinization belt of earthen ruins is preliminarily discussed from a microcosmic standpoint. Source

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