IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.3
Permeability and Sedimentation Characteristics of Pleistocene Fluvio-glacial Deposits in the Dadu River Valley, Southwest China
TU Guo-xiang; HUANG Run-qiu; DENG Hui; LI Yan-rong
Corresponding AuthorHUANG Run-qiu
2013-06
Source PublicationJournal of Mountain Science
Volume10Issue:3Pages:482-493
AbstractThere exist many fluvio-glacial deposits in the valley of Dadu River, Southwest China, which dates back to the Pleistocene. As some of the deposits are located within the seasonal water fluctuation zone of reservoirs, the seepage of groundwater acts as one of the key factors influencing their stability. Investigation into the sediment properties and permeability is, therefore, crucial for evaluating the sediment stability. In this study, in-situ permeability and sieving tests have been carried out to determine grain size distribution, correlations of permeability and hydraulic gradients, and relations between permeability and sedimentation properties. Test results indicate that the deposits are composed mostly of sands, gravels, cobbles and boulders, and the percentage of fines is less than 5%. The sediments have high densities, low porosities and natural moisture contents. At low hydraulic gradients, the seepage velocity obeys the Darcy’s law, while a non-Darcy permeability is observed with hydraulic gradient exceeding a certain value (about 0.5 - 0.7). The linear permeability coefficient ranges from 0.003 to 0.009 cm/s. Seepage failure occurs above a threshold between 1.1 and 1.5. The test data fit well with the non-linear permeability equations suggested by Forchheimer and Izbash. The non-Darcy permeability proves to be in accordance with the seepage equation suggested by Izbash with the power 'm' of about 0.6 - 0.7. The characteristic grain sizes of the studied deposits are found in a narrow range between 0.024 and 0.031 mm, which is much lower than the effective grain size (d10).
KeywordFluvio-glacial Deposits Grain Size Distribution Linear And non-Linear Permeability Seepage Failure
DOI10.1007/s11629-013-2345-x
Indexed BySCI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5401
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.3
Corresponding AuthorHUANG Run-qiu
Recommended Citation
GB/T 7714
TU Guo-xiang,HUANG Run-qiu,DENG Hui,et al. Permeability and Sedimentation Characteristics of Pleistocene Fluvio-glacial Deposits in the Dadu River Valley, Southwest China[J]. Journal of Mountain Science,2013,10(3):482-493.
APA TU Guo-xiang,HUANG Run-qiu,DENG Hui,&LI Yan-rong.(2013).Permeability and Sedimentation Characteristics of Pleistocene Fluvio-glacial Deposits in the Dadu River Valley, Southwest China.Journal of Mountain Science,10(3),482-493.
MLA TU Guo-xiang,et al."Permeability and Sedimentation Characteristics of Pleistocene Fluvio-glacial Deposits in the Dadu River Valley, Southwest China".Journal of Mountain Science 10.3(2013):482-493.
Files in This Item:
File Name/Size DocType Version Access License
Permeability and Sed(2580KB) 开放获取--View Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[TU Guo-xiang]'s Articles
[HUANG Run-qiu]'s Articles
[DENG Hui]'s Articles
Baidu academic
Similar articles in Baidu academic
[TU Guo-xiang]'s Articles
[HUANG Run-qiu]'s Articles
[DENG Hui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[TU Guo-xiang]'s Articles
[HUANG Run-qiu]'s Articles
[DENG Hui]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Permeability and Sedimentation Characteristics of.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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