Test Study on Airtight Capability of Filter Cakes for Slurry Shield and Its Application in a Case
Joint Authors
Min, Fanlu
Zhu, Wei
Xia, Shengquan
Wang, Rui
Wei, Daiwei
Jiang, Teng
Source
Advances in Materials Science and Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-31
Country of Publication
Egypt
No. of Pages
8
Abstract EN
To learn the airproof capacity of filter cakes as opening chambers under air pressure, a series of tests were carried out.
The variations of discharged water with air pressure and time were observed, and the relationship between airproof capacity of filter cakes and surrounding air pressure was analysed.
The test results indicated that there were three stages as compressed air acting on filter cakes: completely not infiltration, a very small amount of infiltration, and penetration leakage.
The certain air pressure between the first and second stages was called the airproofing value of filter cake.
And a capillary bundle model was used to explain the mechanism of air tightness of filter cakes.
In Nanjing Yangtze River Tunnel, a 5 cm thickness filter cake was formed in gravel sand, and its airproofing value was a little lower than 0.12 MPa.
The air pressure used as opening chamber should be equal to the summation of water pressure in sand and airproofing value of filter cake.
While the air pressure is larger than the summation, the filter cake would be gas permeable.
The slurry formulation and airproofing value of filter cakes obtained in the tests were applied successfully in Nanjing Yangtze River Tunnel.
American Psychological Association (APA)
Min, Fanlu& Zhu, Wei& Xia, Shengquan& Wang, Rui& Wei, Daiwei& Jiang, Teng. 2014. Test Study on Airtight Capability of Filter Cakes for Slurry Shield and Its Application in a Case. Advances in Materials Science and Engineering،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1015796
Modern Language Association (MLA)
Min, Fanlu…[et al.]. Test Study on Airtight Capability of Filter Cakes for Slurry Shield and Its Application in a Case. Advances in Materials Science and Engineering No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1015796
American Medical Association (AMA)
Min, Fanlu& Zhu, Wei& Xia, Shengquan& Wang, Rui& Wei, Daiwei& Jiang, Teng. Test Study on Airtight Capability of Filter Cakes for Slurry Shield and Its Application in a Case. Advances in Materials Science and Engineering. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1015796
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1015796