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Journal of Mining and Environment، جلد ۸، شماره ۴، صفحات ۶۴۵-۶۶۲
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عنوان انگلیسی Influence of modeling material on undercut slope failure mechanism
چکیده انگلیسی مقاله A series of physical modeling tests were conducted by means of a beam type geotechnical centrifuge machine in order to investigate the drainage impact on the slope failure mechanism under centrifugal acceleration. Meanwhile, the phenomenon of stress redistribution in undercut slopes and the formation of arching effect were studied. For this purpose, a poorly graded sandy soil (Silica sand No. 6) as well as a relatively well-graded sandy soil (Edosaki sand) were used as the modeling materials. The humid modeling material was compacted on a low friction oblique rigid plate simulating the potential slippage plane. The process of undercutting was conducted, while the earth pressure redistribution inside the model was recorded by means of a miniature set of pressure cells. The results obtained showed completely different failure mechanisms for the two different modeling soils. By undercutting the slope, the earth pressure redistributed and the arch action was formed in a slope model made from a well-graded soil leading to a clear arch-shaped failure. However, in using the poorly graded soil, the water was drained out during centrifuge g-up, the modeling material properties changed, and an avalanche failure was observed. Therefore, in selecting a humid compacted soil as the centrifugal modeling material, a well-graded soil is recommended.
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نویسندگان مقاله محمدحسین خسروی | m h
school of mining engineering, college of engineering, university of tehran, tehran, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

t pipatpongsa |
construction engineering management, division of geo-management, department of urban management, kyoto university, kyoto, japan

j takemura |
department of civil and environmental engineering, tokyo institute of technology, tokyo, japan

m امینی |
school of mining engineering, college of engineering, university of tehran, tehran, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

نشانی اینترنتی http://jme.shahroodut.ac.ir/article_973_5b9a4cc165816270b496a8206c3ac97e.pdf
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زبان مقاله منتشر شده en
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