Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 032061 |
| Fachzeitschrift | IOP Conference Series: Earth and Environmental Science |
| Jahrgang | 570 |
| Publikationsstatus | Veröffentlicht - 2020 |
| Extern publiziert | Ja |
| Veranstaltung | China Rock 2020 - Beijing, China Dauer: 23 Okt. 2020 → 26 Okt. 2020 |
Abstract
Slurry infiltration process contributes to the stability of tunnel face significantly during slurry shield tunneling construction. The support pressure cannot be transmitted efficiently to the face unless a compact filter cake forms. This paper aims at investigating the formation of filter cake in saturated sand by slurry infiltration column tests. A series of tests were performed under different filtration pressures using three concentrations of slurry in four types of saturated sand stratums. In order to obtain the characters of the infiltration process and filter cake, pore pressure evolution was measured. Three types of filter cakes were observed in the tests, including external filter cake, external filter cake plus internal filter cake and deep infiltration. External filter cake transmits support pressure efficiently, while the other two types of filter cakes cannot provide sufficiently support pressure for the tunnel face. Especially, deep infiltration behaves no capacity of retaining pressure and should be avoided in engineering practice.
ASJC Scopus Sachgebiete
- Umweltwissenschaften (insg.)
- Allgemeine Umweltwissenschaft
- Erdkunde und Planetologie (insg.)
- Allgemeine Erdkunde und Planetologie
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in: IOP Conference Series: Earth and Environmental Science, Jahrgang 570, 032061, 2020.
Publikation: Beitrag in Fachzeitschrift › Konferenzaufsatz in Fachzeitschrift › Forschung › Peer-Review
}
TY - JOUR
T1 - Slurry Infiltration Column Tests on Saturated Sand
AU - Zhuang, X. Y.
AU - Zhang, Z. X.
AU - Huang, X.
AU - Yin, T.
PY - 2020
Y1 - 2020
N2 - Slurry infiltration process contributes to the stability of tunnel face significantly during slurry shield tunneling construction. The support pressure cannot be transmitted efficiently to the face unless a compact filter cake forms. This paper aims at investigating the formation of filter cake in saturated sand by slurry infiltration column tests. A series of tests were performed under different filtration pressures using three concentrations of slurry in four types of saturated sand stratums. In order to obtain the characters of the infiltration process and filter cake, pore pressure evolution was measured. Three types of filter cakes were observed in the tests, including external filter cake, external filter cake plus internal filter cake and deep infiltration. External filter cake transmits support pressure efficiently, while the other two types of filter cakes cannot provide sufficiently support pressure for the tunnel face. Especially, deep infiltration behaves no capacity of retaining pressure and should be avoided in engineering practice.
AB - Slurry infiltration process contributes to the stability of tunnel face significantly during slurry shield tunneling construction. The support pressure cannot be transmitted efficiently to the face unless a compact filter cake forms. This paper aims at investigating the formation of filter cake in saturated sand by slurry infiltration column tests. A series of tests were performed under different filtration pressures using three concentrations of slurry in four types of saturated sand stratums. In order to obtain the characters of the infiltration process and filter cake, pore pressure evolution was measured. Three types of filter cakes were observed in the tests, including external filter cake, external filter cake plus internal filter cake and deep infiltration. External filter cake transmits support pressure efficiently, while the other two types of filter cakes cannot provide sufficiently support pressure for the tunnel face. Especially, deep infiltration behaves no capacity of retaining pressure and should be avoided in engineering practice.
UR - http://www.scopus.com/inward/record.url?scp=85097207556&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/570/3/032061
DO - 10.1088/1755-1315/570/3/032061
M3 - Conference article
AN - SCOPUS:85097207556
VL - 570
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
M1 - 032061
T2 - China Rock 2020
Y2 - 23 October 2020 through 26 October 2020
ER -