报告详情
Effects of sliding liquefaction on homogeneous loess landslides in western China
编号：84
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更新：2026-07-16 15:10:06 浏览：0次
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摘要
Sliding liquefaction is considered to be the cause of high-speed and long-distance sliding of
some homogeneous loess landslides in western China. However, there is still a lack of necessary
experimental research and analysis on the effects of sliding liquefaction on these landslides. In this
work, the effects of sliding liquefaction on irrigation-induced, high-speed and long-distance loess
landslides on the South Jingyang Tableland area in China are studied by performing large-scale ring
shear tests and using the sled mode. The results are as follows. (1) There are two kinds of long-runout
sliding modes of loess landslides on the South Jingyang Tableland: sliding along the terrace surface
and sliding within the saturated terrace alluvium, which is associated with sliding liquefaction. Both
sliding modes can lead to long-runout sliding. (2) There are some differences in the inclination of the
sliding surface between the two sliding modes. Based on the inclination of the sliding surface, the
corresponding sliding mode can be distinguished. (3) Under the two sliding modes, the large shear
mechanical properties of the two-layer soil composed of loess and alluvial sandy silt show significant
differences. The friction between the loess and dry terrace alluvium increases with increasing normal
stress and shear rate, while the friction between the loess and saturated terrace alluvium presents
the opposite trend. The results show that the sliding distances under different sliding modes present
opposite trends with the change in sliding speed. (4) Based on the test results from the ring shear tests
and the morphological characteristics of the sliding surface, the sliding mode and sliding distance of a
loess landslide can be identified and predicted.
关键词
liquefaction ,,loess landslides,ring shear
报告人
YONG HONG
Professor Qingdao University of Technology稿件作者
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重要日期
-
会议日期
08月09日
2026
至08月12日
2026
-
08月09日 2026
初稿截稿日期
-
08月12日 2026
注册截止日期
主办单位
香港理工大学
承办单位
The Hong Kong Polytechnic University
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