A study on water film in saturated sand

被引：7

作者：

Lu, X. B. ^{[1
]}

Cui, P. ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Mech, Lab Hydraul & Ocean Engn, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Mt Hazard & Environm, Key Lab Mt Hazard & Earth Surface Proc, Chengdu 610041, Peoples R China

来源：

INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH | 2010年 / 25卷 / 03期

关键词：

Saturated sand; Water film; Liquefaction; FLOW-FIELD; SPUR DIKE; LIQUEFACTION; MECHANISM; LOCALIZATION; SEDIMENT; EROSION; SCOUR; LOAD;

D O I：

10.1016/S1001-6279(10)60040-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Water film can serve as a sliding surface and cause landslides on gentle slopes. The development of "water film" in saturated sand is analyzed numerically and theoretically based on a quasi-three-phase model. It is shown that stable water films initiate and grow if the choking state (where the fluid velocity decreases to near zero) remains steady in a liquefied sand column. Discontinuity can occur in pore water velocity, grain velocity and pore pressure after the initiation of a water film. However, the discontinuity and water film can disappear once the choking state is changed. The key to the formation of water film is the choking in the sand column caused by eroded fine grains.

引用

页码：221 / 232

页数：12

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