工程地质学报2017，Vol.25Issue(2)：547-555,9.DOI:10.13544/j.cnki.jeg.2017.02.035
河西走廊地区线性土遗址阴阳坡掏蚀区差异效应研究
DIFFERENT EFFECTS OF SHADY AND SUNNY SLOPES IN UNDERCUTTING AREA OF LINEAR EARTHEN RUIN IN THE HEXI CORRIDOR
摘要
Abstract
The formation and development of bottom undercutting area are one disease of soil sites,which is the most typical and common disease affected by environmental.This paper investigates,monitors and analyses the morphology,salinity,dry-wet conditions and wind field characters of the Great Wall on Ming Dynasty ruins in 12 cities along the Hexi Corridor.It finds that the morphology,salinity,wind field characters and temperaturehumidity change in the process of rainfall are significantly different at the site of shady and sunny slopes of the undercutting area.Based on the results of wind tunnel simulation experiment,in which remodeling samples desalinated and mixed with different contents of NaCl and Na2SO4 and undergoing 3,6,9,12 dry-moisture cycles,differential effect in the site of shady and sunny slopes of the undercutting area of earthen ruins in arid region is proposed.It also reveals the influences of salt type and content,number of wet and dry cycles,wind velocity and time of blowing on differential effect.Finally,the formation mechanism of differential effects is discussed with the results of investigation analysis and experiment.关键词
土遗址/阴阳坡/掏蚀区/循环期次/风场条件Key words
Earthen ruin/Southern and northern slopes/Undercutting area/Cycle number/Wind field conditions分类
建筑与水利引用本文复制引用
崔凯,崇显灿,谌文武,关喜鹏,陈蒙蒙..河西走廊地区线性土遗址阴阳坡掏蚀区差异效应研究[J].工程地质学报,2017,25(2):547-555,9.基金项目
国家自然基金项目(51208045,41562015)资助. （51208045,41562015）
