›› 2012, Vol. 33 ›› Issue (4): 1167-1172.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of microscopic mechanism of effect of aeolian erosion ullage at salinization belt on earthen ruins in arid region

CUI Kai1, 2, 3, 4，CHEN Wen-wu2, 4，WANG Xu-dong2, 4，HAN Wen-feng2, 4，ZHU Yan-peng1, 3   

  1. 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 of Ministry of Education, Lanzhou University, Lanzhou 730000, China; 3. Western Center for Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou 730050, China; 4. National Engineering Research Center for Conservation of Ancient Wall Painting, Dunhuang, Gansu 736200, China
  • Received:2010-09-21 Online:2012-04-13 Published:2012-04-26

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Abstract: 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 Na2SO4 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.

Key words: arid region, earthen ruins, salinization belt, effect of aeolian erosion ullage, microscopic mechanism

CLC Number: 

  • TU 42
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