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《Journal of Nanchang Hangkong University(Natural Sciences)》 2017-04
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Distribution and Change Laws of Soil Water Content of Slope Under the Coverage with Geo-membrane

WU Jun-hua;YE Ting-ting;KUANG Yu-han;Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University;School of Civil Engineering and Architecture,Nanchang Hangkong University;College of Industry Trade,Jiangxi Vocational Technical;  
Based on the principle seepage of unsaturated soil,the effects of covering areas and ways on distribution and change laws of soil water content of slope were carried out by FEM.For the silty slope,the rangeability of soil water content was the lowest when the rear edge of slope top was covered totally by geo-membrane.The covering areas at the front edge of slope toe had little effect on soil water content and its rangeability is large.The rangeability of soil water content at slope shoulder was decreased if the edges of geomembrane were wrapped.The wrapped depth of geo-membrane had little effect on the soil water content.The rangeability of soil water content with stepped side-wrap was less than the rangeability with the way of linear side-wrap.For the clay slope,the differentcovering areas had little effect on the soil water content at slope shoulder.The different covering areas at slope toe had a certain effect on the soil water content.The soil water content decreased first and the incerased as time goes on.The less the geo-membrane covered,the more the soil water content increased.The covering areas at rear edge of slope top are very important to control the rangeabiliby of soil water content.The effect of covering way with stepped side-wrapped is better than the way with linear sidewrapped.The effect of covering with side-wrap is better than the effect of covering without side-wrap.
【Fund】: 国家自然科学基金(51408291);; 无损检测技术教育部重点实验室开放基金(ZD201529002)
【CateGory Index】: TU43
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