As a counter measure, check dam has been constructed widely because of its obvious advantages. Stability analysis is one of the most important contents in engineering designs of a check dam. Based on analysis of loading combination in this work, a mathematical expression of stability coefficient has been reduced when reservoir of check dam has or has not a deposition. The expression shows a decreasing variation in stability coefficient basically in intercepting process. Through the contrastive analyses of different working conditions of check dam, the results show that check dam having a deposition in reservoir is more dangerous than that harving no deposition, when intercepting earlier arrays of debris flow. The thicker the deposition behind check dam is the more dangerous. Finally the relationship between stability and upstream slope of check dam has been discussed. The results indicate that the effect of upstream slope of check dam decreases when intercepting debris flow continuously. Then a fold-line shaped upstream slope of check dam, which is gentle in the downside and steep in the upside, is suggested for engineering design.
SUN Hao
,
YOU Yong
,
LIU Jinfeng
,
LIN Xueping
. Loading and stability analyses of viscous debris flow check dam[J]. Journal of University of Chinese Academy of Sciences, 2018
, 35(5)
: 635
-644
.
DOI: 10.7523/j.issn.2095-6134.2018.05.010
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