IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.9
Effect of the inclined weak interlayers on the rainfall response of a bedded rock slope
LI Long-qi; JU Neng-pan
Corresponding AuthorLI Long-qi ; JU Neng-pan
Source PublicationJournal of Mountain Science
AbstractEngineering experience shows that outward dipping bedded rock slopes, especially including weak interlayers, are prone to slide under rainfall conditions. To investigatethe effect of inclined weak interlayers at various levels of depth below the surface on the variation of displacements and stresses in bedded rock slopes, four geo-mechanical model tests with artificial rainfall have been conducted. Displacements, water content as well as earth pressure in the model were monitored by means of various FBG (Fiber Bragg Grating) sensors. The results showed that the amount of displacement of a slope with a weak interlayer is 2.8 to 6.2 times larger than that of a slope without a weak interlayer during one rainfall event. Furthermore, the position of the weak interlayer in terms of depth below the surface has a significant effect on the zone of deformation in the model. In the slope with a high position weak interlayer, the recorded deformation was larger in the superficial layer of the model and smaller in the frontal portion than in the slope with a low position weak interlayer. The slope with two weak interlayers has the largest deformation at all locations of all test slopes. The slope without a weak interlayer was only saturated in its superficial layer, while the displacement decreased with depth. That was different from all slopes with a weak interlayer in which the largest displacement shifted from the superficial layer to the weak interlayer when rainfall persisted. Plastic deformation of the weak interlayer promoted the formation of cracks which caused more water to flow into the slope, thus causing larger deformation in the slope with weak interlayers. In addition, the slide thrust pressure showed a vibration phenomenon 0.5 to 1 hour ahead of an abrupt increase of the deformation, which was interpreted as a predictor for rainfall-induced failure of bedded rock slopes.
KeywordBedded Rock Slope Inclined Weak Interlayer Rainfall Model Test
Indexed BySCI
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.9
Recommended Citation
GB/T 7714
LI Long-qi,JU Neng-pan. Effect of the inclined weak interlayers on the rainfall response of a bedded rock slope[J]. Journal of Mountain Science,2016,13(9):1663-1674.
APA LI Long-qi,&JU Neng-pan.(2016).Effect of the inclined weak interlayers on the rainfall response of a bedded rock slope.Journal of Mountain Science,13(9),1663-1674.
MLA LI Long-qi,et al."Effect of the inclined weak interlayers on the rainfall response of a bedded rock slope".Journal of Mountain Science 13.9(2016):1663-1674.
Files in This Item:
File Name/Size DocType Version Access License
13.pdf(773KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[LI Long-qi]'s Articles
[JU Neng-pan]'s Articles
Baidu academic
Similar articles in Baidu academic
[LI Long-qi]'s Articles
[JU Neng-pan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[LI Long-qi]'s Articles
[JU Neng-pan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 13.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.